Heat Pump Water Heaters

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.