Custom Weatherization, LLC is a quickly growing company. It was established in 2006 and has been providing energy efficiency services to both residential and commercial properties ever since!

Water Heaters

Heat Pump Water Heaters

A heat pump water heater is a cost-effective & environment-friendly alternative to a standard electric water heater. The operational principle of a heat pump water heater is a heat pump or a refrigerator in reverse.

It absorbs energy from the surrounding air and dumps it inside the tank at a higher temperature.

Despite their high upfront costs, heat pump water heaters are quite popular in homes because of their low maintenance and annual savings on energy bills. The heat pump water heaters are two to three times more energy efficient than traditional electric resistance water heaters.

Cost and Savings

According to the Energy.Gov, the older your water heater is, the less energy-efficient it will be.

Heat pump water heaters are new and improved in energy efficiency. Heat pump water heaters can use up to 63% less energy than traditional standard electric water heaters.

Uses Electricity More Efficiently

Heat pump water heaters use electricity to move heat from one place to another instead of generating heat directly, increasing the efficiency of the heat pump. 


While not intended to be used as a primary source. A heat pump will dehumidify the surrounding area.

Familiar Technology

Refrigerators remove heat from inside and send it into the surrounding room. Heat pump water heaters pull heat from the surrounding air and transfer it to the storage tank.

Energy Efficiency

Heat pump water heaters are generally four times more efficient than standard water heaters saving up to $400.00 per year.

Additional Information and Key Facts

Heat pump water heaters do not use electricity to directly heat water. Instead, it uses electricity to simply move heat from one place to another. Heat pump water heaters use a fan to pull air from its surroundings and blow it across an evaporator coil, expelling cooler and more dry air back into the room. This process is where dehumidification may take place. Refrigerant is heated from any heat that is blown across the evaporator from the surrounding area.

The refrigerant is then pumped through a compressor where it will have an increased pressure along with an increased temperature. This heated refrigerant passes through a condenser coil that is mounted along the tank where heat is transferred to the cooler water inside the tank. After the water captures the heat from the refrigerant, the cooler refrigerant is then sent back to the evaporator where the process will once again begin.

Installing a heat pump water heater is very similar to installing a standard water heater. It is still supplied with water by your main cold water source. The hot side gets connected to the hot water distribution pipes. Installers must ensure that the proper wiring and correct circuit breaker is in place.

Depending on the code, an electric disconnect may be installed for quick and easy turn off. Furthermore, the area the unit is installed in must have a drain nearby so that the condensation will have a place to be drained. If a drain is not nearby, a condensate pump could be installed to handle the discharge of water.

Generally speaking, a heat pump water heater must be installed in a location that is at least 1,000 cubic feet. Often, a heat pump water heater may be installed in smaller areas but must have vents or louver doors installed so the heat pump water heater has an adequate volume of air. Additionally, this space must maintain a temperature above 40 degrees year round. The higher the average temperature, the more energy efficient the heat pump water heater will be.

One of the biggest maintenance items that must be taken care of periodically is the cleaning of the air filter. Maintaining a clean air filter is paramount to the energy efficiency of the heat pump water heater. The air filter is located on the top of the heat pump water heater and is easily removed. Once removed, you can vacuum or hand wash the air filter. Allow it to dry, then replace the air filter for proper air flow and filtration.

Similar to standard water heaters, flushing of the tank to remove built up lime or other sediments will maintain the manufacturer’s efficiency rating and the expected life of the heat pump water heater.

Choosing to have a heat pump water heater installed in your home or business is an investment. Understanding that these units have a higher upfront cost compared to a traditional water heater. The heat pump water heater will be more efficient than a standard water heater.

However, considering the operating cost of a heat pump water heater compared to a conventional water heater, it’s a great investment. You will find comfort in knowing that your heat pump water heater is using far less energy while providing you with the amount of hot water to meet your demand.

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