While air-source heat pumps exchange heat with the air, geothermal heat pump systems exchange heat with the ground using the a refrigeration process. The air temperature outdoors varies greatly according to the time of day and the season, but a few feet under the ground, the temperature stays at a constant temperature of 57-70 degrees Fahrenheit. This simplifies the exchange process since geothermal systems use heat energy that already exists, unlike air source heat pumps that lose efficiency having to heat or cool the air during extreme temperatures. The heat pump uses ground loop systems to move heat from the ground into the home to heat it and moves heat from the home into the ground to cool it.
To determine the eligibility of your home to install this system, an HVAC professional will look at the soil heat transfer rate, the space around your home, and the water saturation around your home. Though initial installation costs for geothermal systems seem high, the energy you will save in the long run makes them well worth it since these systems use no fossil fuels, meaning you can save money and the planet at the same time, and installing a geothermal heat pump may make you eligible for a federal tax credit!
In a geothermal system, the compressor creates waste heat, or superheat, during the refrigeration cycle, but a desuperheater turns that waste heat into usable domestic hot water. The parts that make up a desuperheater include a pump and heat exchanger that carries waste heat from the refrigeration cycle into the water heater. The desuperheater makes hot water in both heating and cooling mode and does not affect the system’s ability to heat and cool, although the desuperheater cannot act as the main source of hot water, but instead makes hot water as a bonus.
MRCOOL GeoCool Geothermal Heat Pumps come in a variety of options to fit your needs. You can choose between horizontal or vertical systems, left or right return, voltage options including 208 and 230 volts, and options with or without a desuperheater. With MRCOOL Geothermal Heat pumps, you can enjoy renewable energy and help save the Earth!