Zwell currently doesn’t offer financing options.  However, we are continually exploring partnerships with financial institutions that fit our core values. Moreover, we work hard to make our products and services affordable through utility rebates and learning around available tax incentives.

You can find more information about Federal Tax Rebates here. For more information, contact us here.

Zwell is a Washington Social Purpose Corporation founded on Earth Day, April 22, 2020.

• We do not use corporate shells or other structural means such as establishing multiple corporate entities to minimize tax payments.
• We have never filed for bankruptcy protection.
• Zwell has never committed, been penalized for, or been accused of bribery, fraud, or corruption.
• We have never been penalized or have had any allegations of anti-competitive behavior.
• We have never received any penalties for financial reporting, tax payments, investments, or loans.
• Zwell has never received any penalties regarding political contributions or international affairs.
• We’ve never been party to any litigation or arbitration.
• We have never experienced accidental discharges to air, land, or water of hazardous substances at any of our facilities.
• Zwell has never had environmental management or animal welfare penalties.

Zwell does not sell our customers’ data. You can learn more about our privacy and data collection policies here. Furthermore, we have not experienced any breaches of individual privacy and/or losses of individual confidential data.

We started Zwell because we believe that free markets, entrepreneurship, and socially responsible capitalism can solve many of the world’s problems. We believe in creating fulfilling work for people and paying people for the value they create. Here at Zwell we believe in equality and treating everyone with respect. We believe that through open, honest, and transparent dialogue with our employees and contractors we can create lifelong working relationships. We don’t prohibit workers from freely associating and bargaining collectively for the terms of one’s employment.

• Zwell doesn’t employ zero-hour contracts.
• We don’t use prison labor.
• Overtime work is not compulsory.
• We don’t employ workers under the age of 15 (or other minimum work age covered by the International Labour Organization Convention No. 138 ).
• We have not had any on-the-job fatalities.
• Zwell has not had to layoff more than 20% of our workforce.
• We have not had any labor penalties or litigation brought upon us.
• We have not had any allegations or penalties for infringing on indigenous people’s rights.
• Zwell has not had any other penalties, complaints, or grievances filed or levied against us for negative impacts on local communities, human rights, or other stakeholder concerns.

Currently, we are only offering our service in the US, however, as we expand globally we will pay close attention to conflicts around the world. We don’t sell products that are illegal under country laws or regulations where we operate. Furthermore, we don’t sell products that are banned in international conventions or agreements, or subject to international phase-out or regulation. We follow national, state, and local codes regulating labor and workmanship standards.

For more information, contact us here.

Central to Zwell’s purpose is our environmental mission. We believe that we can effectively combat the effects of climate change. We can start by reducing the greenhouse gas emissions of the homes we all live in.

As part of Zwell’s membership in 1% for the planet, 1% of your purchase goes directly to Spark Northwest. This helps support their efforts to combat climate change. Spark Northwest believes in creating communities powered by locally controlled clean energy. Through shared energy projects that allow for community-level participation and equitable ownership; Spark Northwest aims to reduce the energy burden while building wealth for disadvantaged communities.

Through renewable energy projects and policy reform Spark Northwest’s mission is to:

• Ensure everyone has access to affordable clean energy
• Increase the amount of distributed clean energy to achieve a Pacific Northwest that is 100% powered by renewable energy
• Increase access to clean energy for middle and low-income households
• Grow local economies and increase community resiliency through locally sourced energy project

For more information, you can contact us here.

Yes, Zwell Community Fund welcomes your donations. Our business model makes sure to invest in the community we serve. For this reason, a small portion of every purchase made with Zwell goes to the Zwell Community Fund. When checking out, there is also an option to donate. Every dollar donated goes directly to Community Energy Project. Feel free to visit Community Energy Project’s Website to learn more about their work.

We are partnering with the Community Energy Project whose mission is to provide free home services focused on safety, health, and energy efficiency. The Community Energy Project’s most recent equity reported highlighted the following results of the clients they served:

• 59% are people of color
• 66% have income at or below 50% Median Family Income
• 24% have someone in the household with a disability
• 74% identify as female
• 68% are renters
• 29% are over age 55

Every tax situation is unique, therefore, consult with a tax expert. This is to determine if your contribution to the Zwell Community Fund™ is deductible on your taxes 

Zwell is a Washington Social Purpose Corporation, not a 501(c)(3). However, every dollar donated to the Zwell Community Fund™ goes straight to the non-profit Community Energy Project. They give free home services focused on safety, health, and energy efficiency. Moreover, they also give free community education and supplies, home energy upgrades, and repairs. Partnerships with community members and service organizations and government agencies made this possible.

To learn more, get in touch with us.

The Zwell Community Fund™ is not a non-profit company, however, ALL proceeds in the fund are donated to Community Energy Project, which is a non-profit 501(c)3.

Zwell is a Washington-based Social Purpose Corporation. This means that we have embedded a social and environmental mission into the founding charters of the business.

Zwell was established with the idea, that a free market business has a major responsibility to improve its community.  That business— instead of being a means for directing wealth to a few — can be used to share resources equitably. And still maintaining the competitive edge that is so powerful for innovation and moving industries forward into the future. 

We are committed to maintaining transparency and accountability around our entire venture.

If you want to learn more about Zwell Community Fund™, you can read more about us.

Error A906 means that the controller is getting too hot. 

The way to resolve this issue is to replace the control board.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A905 means that the controller malfunctioned and the heater was disabled. 

To resolve the issue, you have to replace the control board.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A904 means that the controller has malfunctioned and the water heater was disabled. 

To resolve this, you have to replace the control board.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A903 means that the controller malfunctioned and the water heater was disabled. 

To fix this issue, you have to replace the control board.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A902 means that the controller malfunctioned and the water heater was disabled. 

The way to fix this issue is to replace the control board.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error T901 means that the controller malfunctioned and the water heater was disabled. 

The way to fix this issue is to replace the control board.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A900 means that the controller malfunctioned and the heater was disabled. 

The way to fix this issue is to replace the control board.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A504 means that the controller malfunctioned and the heater was disabled. 

The way to fix this issue is to replace the control board.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A503 means that the controller malfunctioned and the heater was disabled. 

The way to fix this issue is to replace the control board.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A502 means that the controller malfunctioned and the heater was disabled. 

The way to fix this issue is to replace the control board.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error T300 means the water leak sensor was not installed. The following steps can help you check the issue.

1. Check to ensure the water leak sensor is installed.
2. Check wiring connections to sensors from the board.
3. Check resistance to the sensor to determine whether the sensor or board should be replaced (See ohm reading chart for correct readings).

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A200 means the ECO tripped and the heater was disabled. The following steps can help you check the issue.

1. Disconnect power to the unit.
2. Check elements from screw to ground.
3. Check resistance to thermistors.
4. If the issue is neither the elements nor thermistor, replace the board.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A123 means the Shut-Off Valve has malfunctioned. The following steps can help you check the issue.

1. Check connections of the wiring.
2. Unplug and plug back the Shut-Off valve.
3. If the alarm persists, call customer service.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A122 means the Shut-Off Valve has malfunctioned. The following steps can help you check the issue.

1. Check connections of the wiring.
2. Unplug and plug back the Shut-Off valve.
3. If the alarm persists, call customer service.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A121 means the Shut-Off Valve has malfunctioned.  The following steps can help you check the issue.

1. Check connections of the wiring.
2. Unplug and plug back the Shut-Off valve.
3. If the alarm persists, call customer service.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A120 means the Shut-Off Valve has malfunctioned.  The following steps can help you check the issue.

1. Check connections of the wiring.
2. Unplug and plug back the Shut-Off valve.
3. If the alarm persists, call customer service.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error T132 means the water heater can not satisfy the demand for hot water. The following steps can help you check the issue.

1. Check for open faucets.
2. Check for water leaks.
3. If none present, the unit may be improperly sized.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error T131 is an air filter routine maintenance reminder. The following steps can guide you on how to clean your filter.

1. Set mode to Electric or OFF.
2. Remove the air filter and clean by washing with a mild detergent.
3. Dry air filter and reinstall.
4. Set unit to the desired mode.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A130 means the ambient temperature is below freezing – it is a FREEZE WARNING. To fix this, enable the heater. (Turn it on).

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A129 means the control board relay failed and the heater was disabled.  The following steps can help you check the issue.

1. Disconnect power to the unit.
2. Check wiring connection.
3. Check ohm reading if wires are properly connected.
4. If acceptable ohm reading is present, replace the board. If not, replace relay.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A128 means the control board relay failed and the heater was disabled.  The following steps can help you check the issue.

1. Disconnect power to the unit.
2. Check wiring connection.
3. Check ohm reading if wires are properly connected.
4. If acceptable ohm reading is present, replace the board. If not, replace relay.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A127 means the elements mis-wired or the control board failed and the heater was disabled. The following steps can help you check the issue. 

1. Disconnect power to the unit.
2. Check the wiring connection to the heating element.
3. Ensure both wires are properly connected at element and board.
4. Check the ohm reading on the heating element if wires are properly connected.
5. If acceptable ohm reading is present, replace the board. If not, replace the element.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A126 means the heating element or control board failed and the heater was disabled. The following steps can help you check the issue. 

1. Disconnect power to the unit 
2. Check resistance on element per included Ohm Reading Chart 
3. If acceptable ohm reading is present, replace the board 
4. If ohm reading is not as it should be per included chart, replace the board

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A125 means the heating element or control board failed, the heater was disabled. The following steps can help you check the issue. 

1. Disconnect the power to the unit 
2. Check resistance on element per included Ohm Reading Chart 
3. If acceptable ohm reading is present, replace the board 
4. If ohm reading is not as it should be per included chart, replace the board

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A108 means the heating source defaults to elements due to condensate drain blockage. The following steps can help you check the issue.

1. Remove the top cover from the tank
2. Visually inspect to ensure condensate line is clear and there is not excessive condensate in the condensate pan
3. If water is present, locate the blockage and unlock it.
4. Ask the customer where the condensate is being routed 
5. If the pan is dry and no blockage is present, replace the condensate sensor.
6. Also, this is often caused by a frozen condensate line during the winter.  So, depending on how the condensate line was installed and if it was uninsulated that could be a potential cause.  If you are able to test that water runs through the condensate line clearly then that could point to needing to replace a condensate sensor.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A107 means that the system has detected water in the drain pan. The following steps can help you check the issue. 

1. Check for obvious water leaks (If the leak is present, service for unit leakage).
2. If obvious leakage is not present, disconnect the rope sensor from the board, and if the code is no longer present, dry (a blow dryer is an acceptable method) or replace the rope sensor.
3. If the error is still present once the rope sensor has been replaced, the board will need to be replaced.
4. Press and hold the “Clear Alarm” button for 5 seconds to override the alarm for 24 hrs.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A106 means the heating source defaults to elements due to heat pump temperature malfunction. The following steps can help you check the issue.

1. Check connections of the wiring and sensors.
2. Get an Ohm reading on the thermistors (if multimeter is available) (See Ohm chart for correct readings based on ambient temperature).
3. Check on display by selecting Service>Sensors>If the sensor shows – 40°F, the circuit is open, +250°F indicates the circuit has shorted. Note: To confirm reading, power down the unit and unplug the thermistor from the board. Check Ohm reading. (See ohms chart)

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A105 means the heating source defaults to elements due to heat pump temperature malfunction.

The following steps can help you check the issue.

1. Check connections of the wiring and sensors.
2. Get an Ohm reading on the thermistors (if multimeter is available) (See Ohm chart for correct readings based on ambient temperature).
3. Check on display by selecting Service>Sensors>If sensor shows – 40°F, the circuit is open, +250°F indicates the circuit has shorted. Note: To confirm reading, power down the unit and unplug the thermistor from the board. Check Ohm reading. (See ohms chart)

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A104 means the upper tank temperature sensor malfunctioned. Therefore, the heater was disabled. The following steps can help you check the issue.

1. Check connections of the wiring and sensors.
2. Get an Ohm reading on the thermistors (if multimeter is available) (See Ohm chart for correct readings based on ambient temperature).
3. Check on display by selecting Service>Sensors>If sensor shows – 40°F, the circuit is open, +250°F indicates the circuit has shorted. Note: To confirm reading, power down the unit and unplug the thermistor from the board. Check Ohm reading. (See ohms chart)

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A103 means the lower tank temperature sensor malfunctioned. The heater was disabled. The following steps can help you check the issue.

1. Check connections of the wiring and sensors.
2. Get an Ohm reading on the thermistors (if multimeter is available) (See Ohm chart for correct readings based on ambient temperature).
3. Check on display by selecting Service>Sensors>If the sensor shows – 40°F, the circuit is open, +250°F indicates the circuit has shorted. Note: To confirm reading, power down the unit and unplug the thermistor from the board. Check Ohm reading. (See ohms chart)

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A102 means the heating source defaults to elements due to heat pump temperature sensor malfunction. The following steps can help you check the issue.

1. Check connections of the wiring and sensors.
2. Get an Ohm reading on the thermistors (if multimeter is available) (See Ohm chart for correct readings based on ambient temperature).
3. Check on display by selecting Service>Sensors>If the sensor shows – 40°F, the circuit is open, +250°F indicates the circuit has shorted. Note: To confirm reading, power down the unit and unplug the thermistor from the board. Check Ohm reading. (See ohms chart)

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A009 means the heating source defaults to elements due to compressor malfunction. The following steps can help you check the issue.

1. Check connections of the wiring and sensors.
2. Get an Ohm reading on the thermistors (if multimeter is available) (See Ohm chart for correct readings based on ambient temperature).
3. Check on display by selecting Service>Sensors>If sensor shows – 40°F, the circuit is open, +250°F indicates the circuit has shorted. Note: To confirm reading, power down the unit and unplug the thermistor from the board. Check Ohm reading. (See ohms chart)

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error T009 means the heating source defaults to elements due to compressor malfunction. The following steps can help you check the issue.

1. Check connections of the wiring and sensors.
2. Get an Ohm reading on the thermistors (if multimeter is available) (See Ohm chart for correct readings based on ambient temperature).
3. Check on display by selecting Service>Sensors>If sensor shows – 40°F, the circuit is open, +250°F indicates the circuit has shorted. Note: To confirm reading, power down the unit and unplug the thermistor from the board. Check Ohm reading. (See ohms chart)

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A008 refers to the Dry fire protection and usually means that there is no sufficient water in the storage tank and the heater was disabled. The following steps can help you check the issue.

1. Fill the storage tank with water. 
2. Purge all air from the storage tank by running a hot water faucet (This is generally an installation issue and indicates there is air in the tank.) If the unit is still displaying the A008, the air is still present and should be purged again. Any issues with the board or sensors would exhibit a different alarm code.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error T006 means that the heating source defaults to elements due to compressor malfunction. The following steps can help you check the issue.

1. Confirm that the fan is operational while the compressor is on. (In case the fan is not operational, check continuity from the middle(ground)terminal to either outside the terminal. If there is a 60V or higher reading, the fan should be running and will need to be replaced. If not, replace the control board (rare)).
2. Confirm the filter screen is clean.
3. Inspect compressor and surrounding components for any obvious signs of the refrigerant leak (oily residue) If the compressor is not operational or there are signs of leakage, the unit will need to be replaced as we do not service sealed system parts.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A006 means that the heating source defaults to elements due to compressor malfunction. The following steps can help you check the issue.

1. Confirm fan is operational while the compressor is on. (In case the fan is not operational, check continuity from the middle (ground) terminal to either outside terminal. If there is a 60V or higher reading, the fan should be running and will need to be replaced. If not, replace the control board (rare)).
2. Make sure the filter screen is clean.
3. Inspect compressor and surrounding components for any obvious signs of the refrigerant leak (oily residue) If the compressor is not operational or there are signs of leakage, the unit will need to be replaced as we do not service sealed system parts.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error T005 means that the heating source defaults to elements due to low airflow. The following steps can help you check the issue.

1. Confirm fan is operational while the compressor is on. (In case the fan is not operational, check continuity from the middle (ground) terminal to either outside terminal. If there is a 60V or higher reading, the fan should be running and will need to be replaced. If not, replace the control board (rare)).
2. Confirm the filter screen is clean.
3. Inspect compressor and surrounding components for any obvious signs of a refrigerant leak (oily residue) If the compressor is not operational or there are signs of leakage, the unit will need to be replaced as we do not service sealed system parts.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A005 means that the heating source defaults to elements due to compressor malfunction. The following steps can help you check the issue.

1. Confirm fan is operational while the compressor is on. (In case the fan is not operational, check continuity from the middle (ground) terminal to either outside the terminal. If there is a 60V or higher reading, the fan should be running and will need to be replaced. If not, replace the control board (rare)).
2. Make sure that the filter screen is clean.
3. Inspect compressor and surrounding components for any obvious signs of a refrigerant leak (oily residue) If the compressor is not operational or there are signs of leakage, the unit will need to be replaced as we do not service sealed system parts.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Error A004 means that the heating source defaults to elements due to compressor malfunction. The following steps can help you check the issue.

1. Confirm fan is operational while the compressor is on. (In case the fan is not operational, check continuity from the middle (ground) terminal to either outside the terminal. If there is a 60V or higher reading, the fan should be running and will need to be replaced. If not, replace the control board (rare)).
2. Make sure the filter screen is clean.
3. Inspect compressor and surrounding components for any obvious signs of a refrigerant leak (oily residue) If the compressor is not operational or there are signs of leakage, the unit will need to be replaced as we do not service sealed system parts.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

You can contact Rheem by calling them at 1-800-432-8373 or via their website.

For questions related to Eco Net call 1-800-255-2388.

For hybrid heat pump water heater technical support call 1-800-995-0982.  The hybrid heat pump water heater technical support line’s hours are 8:00AM to 5:00PM Central Time.  The staff at Rheem are very knowledgable, but you can expect long wait times midday.  Call early in the morning for faster response times.

Getting no or not enough hot water has many possible causes. We recommend checking these first.

• The power supply – make sure that there is power going to the water heater and proper wiring has been installed
• The fuse and circuit breaker – make sure the fuse has not blown or the circuit breaker did not trip
• The thermostat setting – make sure that the temperature was not set too low
• Water usage may have exceeded the capacity of the water heater. Wait for the water heater to recover after huge demand. 
• Leaking or open hot water faucets. Make sure all faucets are closed.

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

Here is the step-by-step guide you can follow on how to replace the batteries. 

1. Remove the front cover of the Control assembly.

2. Remove the BR2032 battery from the battery holder.

3. Replace the battery with an approved BR2032 cell coin battery.

4. Re-Install the front cover of the Control assembly.

Still have some questions? Contact us!

If the water that is coming out from your water heater is too hot, the thermostat is set too high. The temperature control must be double-checked to make sure that the temperature is within an acceptable level.

The water heater interface controls the temperature of the water in the heater. The Rheem water heaters are set at 120°F (49°C) by default before it leaves the factory.  This is to comply with safety regulations. 

Hearing a popping sound in the relief valve can be caused by increased pressure in a closed system. Fix this immediately.  Hearing a popping sound in the relief valve is an unacceptable situation.

If you purchased your water heater from us, please contact us so we can help. However, if you purchased your water heater elsewhere, contact your water supplier/utility, the plumbing contractor that installed the water heater for you, or the manufacturer of the water heater.

The buildup of scale or mineral deposits in the water heater may cause a rumbling noise. When this happens, allow a few quarts of water to run from the drain valve to remove the sediments.

If this doesn’t solve your problem and you purchased your water heater from us, please contact us so we can help. If you purchased your water heater elsewhere, try contacting the plumbing contractor that installed the water heater.  You can also contact the manufacturer of the water heater.

Our installation time at the moment is about two weeks. However, if you have an emergency replacement situation, please reach out and we’ll see what we can do!

The quick-release valve is a little lever on the top of a storage water heater.  It is for safely releasing excessive temperature and pressure inside the storage tank. Rheems’s water heaters have a built-in system to automatically monitor and control the temperature and pressure. However, for added safety, they also come with a relief valve.

Consequently, without the quick-release valve, the water heater may run the risk of an explosion. Most especially if the temperature or pressure got higher than what the tank was designed to handle.

To put it simply, storage water heaters can be dangerous or even lethal if they do not come with a temperature and pressure relief valve.

Zero clearance requirement is in reference to installation. This implies that when needed during installation, Rheem’s line of hybrid electric heat pump water heaters can be installed directly up against a wall. However, competing products require several inches of clearance. Meaning, there has to be a minimum distance between any wall and the water heater. Rheem designed their line of heat pump water heaters to have an outlet vent.

Interested in Rheem hybrid water heaters? Shop here!

There are different operating options available for Rheem water heaters.  These are Energy Saver, High Demand, Heat Pump, Electric Only, and Vacation modes. The temperature and amount of power being used depend on what operating option the water heater is currently on.

• Heat Pump Mode: This mode will heat with Heat Pump operation. It will not use electric heat during normal heating and demand cycles.  This mode has a low recovery but minimizes power consumption.

• Energy Saver Mode: This mode will provide functional operation. Consequently, the water heater performance meets Energy Star’s requirements.  FHR (First Hour Rating) – exceeding the minimum of 51 GPH (Gallons Per Hour) and a minimum UEF (Uniform Energy Factor) of 2.0.  As a result, the use of electric heat is minimized while the compressor operation is maximized.

• High Demand Mode: This mode provides the highest recovery while still providing good energy savings.  The water heater will operate both the heat pump and electric heat simultaneously.

• Electric Only Mode: This mode will heat with the electric-resistance elements.  It should be used during filter and condensate drain maintenance periods.  This mode will result in maximum power consumption.

• Vacation Mode: When you will be away from your home for an extended period of time, use vacation mode. This mode will allow a span setting between 1 and 28 days. It can also be set indefinitely with the “Hold” setting.  In this mode, the tank temperature will remain at 65°F (18°C). 

If you still have questions, contact us here!

If you leave for a vacation anywhere from 1 to 28 days you can set the water heater to vacation mode. The tank temperature will stay heated at around 65°F (18°C).  Furthermore, you can also set the water heater to hold. It will indefinitely hold the temperature you set it at while you are away.  

However, if you won’t be using your water heater for 6 months or more we recommend turning off the power and water supply. This is to conserve energy and prevent a build-up of dangerous hydrogen gas.

The water heater and piping should be drained if they might be subject to freezing temperatures while you are away.

After a long shut-down period of 6 months or more, the water heater’s operation and controls should be checked.  It is important to make sure that the water heater is completely filled again before returning to normal use.

Have more questions regarding vacation mode? Contact us!

Rheem’s ProTerra hybrid heat pump water heater is refrigerant is R134A. It is an environmentally friendly and non-chlorinated refrigerant. This refrigerant has zero ozone depletion potential. However, releasing refrigerant into the atmosphere may be considered illegal.

 

Rheem ProTerra hybrid heat pump water heaters have both an inlet duct and outlet duct.  The inlet duct pulls air into the condenser. The air then heats the water. Additionally, dehumidified air from the water heater is exhausted via the outlet duct. 

There are a few conditions where you’d consider ducting.

Inlet Ducting

An ideal location would be a room that has greater than 700 cu ft.  If the area of your water heater is smaller than 700 cubic feet and you don’t have the option of installing a louvered door then you may consider ducting air from outside the room using the inlet duct.

Outlet Ducting

If your water heater is located in a conditioned space like a laundry room you can expect cold dehumidified air to exhaust from the outlet duct.  It can reduce the temperature of the room by a few degrees.  Some homeowners choose to duct the cold air outside of a conditioned room.

Always check with local building and HVAC codes before designing the air duct system. Do not connect the water heater to existing ductwork; it must be ducted separately from other appliances. Ducting must be adequately supported along both vertical and horizontal lengths. UL Certified terminations must be used for ducting to the outside. 

For more information on how to properly duct a heat pump water heater contact us.

An ideal location for a hybrid heat pump water heater is in a clean dry space with enough room.  Also, the thermistor and element access panels should be accessible for servicing.  Keep in mind that installation in a confined space can lead to higher power consumption. Adequate ventilation should be provided.

CAUTION: The water heater should not be located in an area where leakage of the tank or connections will result in damage to the area adjacent to it or to lower floors.  Where such areas cannot be avoided, it is recommended that a suitable drain pan is used.

A water tank filled with water can weigh between 500 to 1,100 pounds. The weight depends on the tank size. Therefore, make sure the floor underneath the water heater location is strong enough to support the weight of the water heater.  Floor isolation kits are likewise recommended to minimize vibrations if needed.

Furthermore, ambient temperature should not exceed 145°F (63°C).  The water heater and water lines should not be installed outdoors in unprotected areas or where they would be susceptible to freezing temperatures.

The heat pump needs enough air exchange to operate efficiently and several locations will accommodate this.  Generally speaking, if the location of the water heater is in a room larger than 700 cubic feet (e.g. 7’ x 10’ x 10’) you will have enough air exchange for optimal operation.  If your location is smaller than 700 cubic feet you can use ducting or a louvered door to produce the proper air exchange.

For more information about the ideal location, you can contact us.

No, insulation blankets are not necessary for the Rheem Professional Prestige ProTerra model.

The CTA 2045 port adapter and UCM let your water heater to be notified of power grid conditions and to react intelligently. It works as a translator between your water heater and your electric utility’s control module. Because of this, it possible to engage in your utility’s energy management program. Furthermore, Rheem’s ProTerra is NEEA Tier 4 certified. It also comes with CTA 2045 adaptor with full Demand Response capability out of the box. The CTA Adaptor on the Rheem ProTerra hybrid heat pump water heaters allows for the installation of a CTA-2045 compliant module should your electric utility require it.

Apart from Rheem, other hot water heater makers are supporting the ANSI/CTA-2045 standard. This is for an open communications protocol and physical port for electricity-using appliances. Additionally, the protocol was developed by the Electric Power Research Institute, Consumer Technology Association, and others. It is a way for utilities to manage peak demand within their electrical grid. 

Zwell is dedicated to getting homes closer to net zero through the installation of new energy-efficient hybrid water heaters. We are not currently equipped to do service or repair visits but we want to be as helpful as possible. Feel free to reach out to us here or for more information, you can contact the Rheem Hybrid Technical Services Department at 800-995-0982.

EcoNet is the brains of Rheem water heaters.

Using the latest in sensor technology, the EcoNet^® Smart Monitoring System offers a new level of protection, comfort, and energy savings. This innovative system offers:

• Protection – Timely maintenance and care alerts 
• Precision Comfort – From across the room or across the country
• Energy Innovation – Saving energy and money
• Streamlined Service Calls – Professional assistance is a click away

Rheem’s mobile application is available for both Android and iOS mobile devices that provides management features for several Rheem products including the ProTerra line of hybrid heat pump water heaters.  The EcoNet app provides the following features:

• Control your hot water heater temperature
• Setup the following modes Energy Saver, High Demand, Heat Pump, Electric & Vacation
• Monitor hot water usage over time
• Receive notifications

To learn how to set up and use EcoNet, visit our installation guide.

Drain times vary for a variety of factors but a rough range is anywhere from 10 – 20 minutes depending on tank size.  If it is taking longer to drain the tank you can try to turn on the cold water supply to the tank to try and flush any impediments. The following steps will guide you on how to drain your water heater tank.

WARNING: Before manually operating the relief valve, make certain no one will be exposed to the hot water released by the valve.  The water emptied from the tank may be hot enough to present a scald hazard.  Hence, it should be directed to a suitable drain to prevent injury or damage.

1. Shut off power to the water heater before draining the water.
2. Turn off the cold water supply.
3. Open a hot water faucet or lift the handle on the relief valve to admit air to the tank.
4. Attach a garden hose to the drain valve on the water heater and direct the stream of water to a drain.
5. Open the valve.

You can also watch the video below for reference on how to drain the water tank. Questions? Contact us here.

The automatic water shut-off valve has a self-check feature that runs every 30 days once the water heater is powered on.  This feature works by closing and reopening the automatic water shut-off valve.  In case the valve fails to reopen, the water heater is disabled.  The water heater gives an alert when the automatic water shut-off valve fails to close.

For more information, contact us here.

A standard electric water heater requires a 30 amp double pole breaker. These are basically two 15 amp breakers in their electrical panel. In some older homes, only a single 15 amp breaker may be available.  Installing a 30 amp model on 15 amp service would overload the breaker. It also does not allow it to run properly due to a lack of electricity.

For this reason and to give ProTerra more versatility a 15 amp model is available. The main difference is the downsized elements. The 15 amp model uses 2,500-watt elements instead of the standard 4,500-watt elements in standard electric water heaters.  The first-hour rating of the 15 amp model is 54 gallons per hour. On the other hand, the 30 amp model’s first-hour rating is 67 gallons per hour.  The recovery time for the 15 amp model is 16 gallons per hour compared to 27 for the 30 amp model.

As you can see by the highlighted section of the spec sheet, the first-hour hot water delivery and recovery rate is much less on the 15 amp than the 30 amp because of this.

It’s been many years since homes were built without having a 30 amp service ran for their water heater and is pretty rare to come across.

The 15 amp variant became available during Rheem’s Gen IV launch in 2017.

If you are replacing any standard electric water heater, chances are that it would be a 30 amp model. If you had any doubts, the only way to verify would be to look at the electrical panel and see what size breaker is present for the water heater circuit.

For more information, contact us here.

LeakGuard™ is a Rheem leak detection and prevention system. It is on ProTerra™ and it limits leaks to no more than 20 ounces of water. In the event of a leak, the water heater will shut down.

For more information, you can contact us.

Rheem’s ProTerra line of hybrid heat pump water heaters offers a 10-year limited warranty. Rheem’s warranty’s like most in the industry are only available to the original owner of the water heater and are not transferrable.

When you purchase a water heater from Zwell we complete the registration of your water heater for you and will provide you with a Certificate of Limited Warranty and will keep this certificate on file for you should you misplace it.

Rheem warrants the water heater and its component parts are free from defects in materials and workmanship under normal use. Rheem has the option to repair or replace the water heater or any of its components parts if they fail within normal use.

If an exact replacement part or water heater isn’t available, Rheem will provide you with the current comparable part or unit. There is also a scenario where you may have the option of paying for an upgrade if the features from the defective unit are no longer available due to changing the government or industry standards and regulations. In this case, you will receive a new warranty for the replacement water heater.

Like most warranties, there are several exclusions:

• Service trips to your home to teach you how to install, use or maintain your water heater or bring the water heater into compliance with local building codes and regulations.
• Damages, malfunctions, or failures resulting from failure to install the water heater in accordance with applicable building codes, ordinances, or good plumbing and electrical trade practices.
• Damages, malfunctions, or failures resulting from improper installation or failure to operate and maintain the water heater in accordance with Rheem’s instructions.
• Performance problems caused by improper sizing of the water heater, the venting connection, electric service voltage, wiring, or fusing.
• Damages, malfunctions, or failures caused by improper conversion from natural gas or liquid propane.
• Damages, malfunctions, or failures caused by operating the water heater with the anode rod removed or with modified, altered, or unapproved parts installed.
• Damages, malfunctions, or failures caused by abuse, accident, fire, flood, freeze, lightning, acts of God, and the like.
• Tank failures (leaks) caused by operating the water heater in a corrosive or contaminated atmosphere.
• Damages, malfunctions, or failures caused by operating the water heater with an empty, or partially empty, tank (also known as “dry firing”).
• Damages, malfunctions, or failures caused by operating the unit at water temperatures exceeding the maximum setting of the operating, or high limit, control.
• Tank failures caused by operating the water heater when it is not supplied with potable water, free to circulate at all times.
• Damages, malfunctions, or failures caused by subjecting the tank to pressures, or firing rates, greater than those shown on the rating label.
• Damages, malfunctions, or failures resulting from the use of any attachment, including an energy-saving device, not authorized by Rheem.
• Units installed outside the fifty states (and the District of Columbia) of the United States of America.
• Units removed from the original installation location.
• Units that had their rating labels removed. A water heater should not be operated if the rating label is removed.

If you need to make a warranty claim, simply contact us and we’ll help you with the process.

 

In addition to Rheem’s commitment to the environment, they are also holding themselves accountable in how well they treat their customers, partners and employees.

There is strong evidence to suggest that Rheem is doing a good job in this area by taking a quick look at Rheem’s Glassdoor Reviews compared to their primary competition.

	Rheem	Bradford White	AO Smith
Overall	3.8	2.9	3.4
Culture & Values	3.6	2.4	3.1
Diversity & Inclusion	4.1	N/A	3.0
Work/Life Balance	4.0	2.3	3.2
Senior Management	3.2	2.4	2.8
Compensation & Benefits	3.6	3.0	3.8
Career Opportunities	3.3	2.6	3.0
Recommend to a Friend	71%	41%	56%
CEO Approval	97%	33%	100%
Business Outlook	73%	51%	51%

One employee and former subcontractor of Rheem that we discussed with said, “Rheem has always been fair in all my dealings with them. They put a real emphasis on listening to feedback provided back to them and are always willing to make any necessary adjustments to how they do business.”

We chose to partner with Rheem not only for their industry-leading products but also because of their dedication to working on the problem of climate change. Rheem is a privately held company that is putting a focus on sustainability through A Greater Degree of Good initiative. The initiative has 3 primary goals.

By 2025 Rheem will:

• Launch a line of heating, cooling, and water heating products that boast a 50% reduction in greenhouse gas footprint.
• Reduce greenhouse gas emissions by 50% moreover, achieve zero waste to landfill in our global manufacturing operations.
• Train 250,000 plumbers, contractors, and key influencers on sustainable products or sustainable installation and recycling best practices.

You can learn more about Rheem’s progress in their sustainability progress reports:

• Rheem’s 2019 Sustainability Progress Report

The full line of Rheem hybrid heat pump water heaters are all designed in the United States but manufactured in Mexico. This includes the Professional Prestige ProTerra, Performance Platinum ProTerra, Performance Platinum Series, and Professional Prestige Series lines.

Got questions? Contact us here.

Depending on where you live and how you use a hybrid, you can save up to $480 per year in energy costs. We’ve developed a simple payback period or return on investment (ROI) calculator to help you calculate how much you can expect to get in return on your upfront investment in a hybrid electric heat pump water heater.  In addition, you get a rough estimate as to how much you might expect to save over the lifetime of your water heater.

Got questions? Contact us here.

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All hybrid heat pump water heaters have a condensate drain to remove water that has condensed from the warm air drawn into the water heater by the compressor to heat the water in the tank.

Review the manufacturer’s instructions when installing a condensate drain line and make sure that your drain lines connections and piping comply with all state and local codes.

Below are some considerations for the proper draining of condensate:

• A floor or other drain no higher than 36″ (91.4 cm) above the floor must be available in close proximity to the water heater to allow for the shortest possible drain with minimal turns to be installed.
• It is important to install a 3/4″ FNPT fitting suitable for either rigid or flexible line to the primary drain port coming off the side of the unit. Diameter reductions from the 3/4″ drain line are not recommended.
• It’s important to route the flexible or rigid line that the discharge water cannot contact live electrical parts or cause water damage.
• Ensure that the rigid or flexible drain line maintains a downward slope to allow for proper gravity drainage of condensate to the drain and to allow for proper function of the condensate drain blockage sensor.
• If no drain is available then install a common condensate pump with a capacity no less than 1 gallon (3.8l)/day according to the manufacturer’s instructions.
• If a condensate pump is installed, it should be wired to shut off the heat pump in the event he condensate pump fails or the float switch in the pump activates.
• Condensate drain lines that are installed in areas subject to freezing temperatures should be wrapped with a nationally recognized heat tape.
• You shouldn’t connect condensate drain lines with other drain or discharge lines into a single (common) pipe or line. Each line (condensate drain line, temperature and relief valve discharge pipe, etc.) should be independently run to an adequate drain.

 

Zwell strives to have a positive impact on household energy consumption globally. Aside from offering energy-efficient alternative products, we strive to give information on heat pump water heater rebates and tax incentives. That is why we are constantly working on solutions to provide instant discounts at the time of purchase. However, rebates are often provided by the utility provider or through the Federal Government tax credit.

Our goal is to make this process as simple as possible for everyone. Nevertheless, if we are unable to provide you with a heat pump water heater rebate immediately, we will provide you with the information and procedures necessary to claim a refund or tax credit.

For more information on rebates and available tax extensions, visit the Rheem Rebate Center or the Energy Star Web Rebate Finder website.

For additional questions, do not hesitate to get in touch with us.

A heat pump or hybrid water heaters transfer heat from the surrounding air to the water. As a result, it will produce cool, dry exhaust air. Today’s hybrid water heaters have the capability to run in 2 modes. The first mode is heat pump mode, this is the most energy-efficient mode. The second is conventional electric resistance mode. The second mode is less energy efficient than the first mode.

However, when operating in heat pump mode, it does not heat water as fast as conventional electric resistance heaters. This is most especially true when the water heater is recovering after significant usage.

Consequently, to maintain performance, hybrid water heaters may switch between the two modes. These two heating modes are why heat pump water heaters are also referred to as “hybrids”.

Hybrids are optimally designed to be installed in unconditioned or semi-conditioned areas. For example, garages or basements. However, if placed in conditioned space, hybrids will produce cool and dry air that is useful in the summer months but will lead to higher heating bills in the winter months. If you think a heat pump water heater is the right product for you but you need to install the hybrid in a conditioned space such as a laundry room, you have the option of ducting the exhaust air outside.

For further questions, you can contact us here.

When your house experiences flood, fire, earthquake, or other physical damage; refrain from using the water heater. We are sorry to hear that you have to go through this. We can only imagine how difficult this has been. However, once it is safe to be in your home you should turn off the circuit breaker to the water heater first.

Do not hesitate to contact us so we can help determine if it is safe to continue to operate your water heater.

Seismic straps are also known as earthquake straps or water heater restraining straps. These are straps that brace or anchor your water heater to the wall. They prevent the water heater from falling when an earthquake happens.

We follow all local and national codes when installing your water heater. We install seismic straps with every water heater installation up to or exceeding the codes governing your home. For seismic strapping information in Oregon, you can read this.

Watch the video below for reference. For more information, contact us here. 

 

If we are the one installing the new water heater for you, we will help you verify if there is a need for a thermal expansion tank. Moreover, you can also check with your water utility if there is a need for an expansion tank.

Heated water increases water pressure. This is because the water expands in volume when heated. Thermal expansion is the term pertaining to this effect. For an “open water system”, an increase in water pressure that exceeds the limit of the water heater can flow back into the city main. Hence, dispersing the excess pressure. There is no need for a thermal expansion tank.

However, a “closed water system”, prevents the expanding water from moving back into the main supply line. As a result, thermal expansion can build an unexpected dangerous pressure increase in the water heater system and piping. During each heating cycle, this rapid pressure increase can trigger the pressure relief valve repeatedly causing untimely breakdown.

The recommended method of managing this is to connect a thermal expansion tank. In the cold water line between the water heater and check valve, this is where the expansion tank should be installed.  It is designed with an air cushion that decreases as the system pressure increases. Therefore, reducing the pressure build-up and repeated operation of the pressure relief valve.

For more information, you can contact us.

First and foremost, when setting the temperature of your hot water heater you need to consider the safety for you and anyone that will use hot water in your home. By far the biggest safety factor to consider is injury from scalding or burns related to exposure to hot water. Water temperatures above 125°F (52°C) can cause severe burns instantly or death from scalds.

Children, elderly and disabled individuals are at the highest risk of being scalded. Households with these people may require a 120°F (49°C) or lower thermostat setting to prevent contact with water capable of injury. Always feel the water before bathing or showering. The chart below can act as a guide for determining the proper water temperature for your home.

Temperature	Time to Produce a Serious Burn
120°F (49°C)	More than 5 minutes
125°F (52°C)	1.5 to 2 minutes
130°F (54°C)	About 30 seconds
135°F (57°C)	About 10 seconds
140°F (60°C)	Less than 5 seconds
145°F (63°C)	Less than 3 seconds
150°F (65°C)	About 1.5 seconds
155°F (68°C)	About 1 second

To comply with safety regulations most manufacturers factory set the water heater temperature to 120°F (49°C). The US Department of Energy also recommends 120°F (49°C) as the optimal setting to balance safety and conservation.

Another important safety consideration is that in certain environments legionellae bacteria can build up in storage water tanks and plumbing, which can cause Legionnaire’s Disease or Pontiac Fever. If you or someone in your home has an immune compromised system or a chronic respiratory disease you should take additional precautions to make sure your plumbing system is providing you with safe water, which may require hotter temperatures and additional maintenance.