Geothermal Heat Pumps: 400% Efficient

Geothermal heat pumps are four times more efficient than standard heat pumps saving energy and saving you money!What constitutes a heat pump?A heat pump is any machine that removes heat from one area and moves it to another. You may be surprised but a number of household devices are actually heat pumps including refrigerators and air conditioning units. Refrigerators remove any existing heat from the inside and pull it outside using energy; this is why the back of your refrigerator is hot!What makes a geothermal heat pump so efficient? An air source heat pump utilizes the outside air which has a extremely wide range of temperatures. On the other hand, a geothermal heat pump uses the air from below the earth€™s surface which remains at a much more constant temperature (between 45 and 65 degrees based on location). A traditional air source heat pump uses energy to cool or heat the external air depending on the season making it less efficient. A geothermal heat pump does not have to generate energy, it instead transfers heat from the ground.How can the efficiency exceed 100%?Many traditional heat pumps are 94% efficient. This means that 94% of the energy is used to pull out the heat, but the other 6% is used to run the actual pump. By transferring energy a geothermal heat pump becomes exponentially more efficient. When a geothermal heat pump consumes one unit of energy to operate, it transfers 4 units of energy in return. In other words, a geothermal heat pump has a payback rate of 400%. This efficiency results in dramatic savings in energy bills, up to 70% (see our article The Cost Benefits of Installing a Geothermal Heat Pump)!