
Many systems include a "desuperheater" that uses excess heat to provide virtually free domestic hot water during summer cooling. Residential Clean Energy Credit | Internal Revenue Service
Look for the ENERGY STAR label. Pay attention to the EER (Cooling efficiency) and COP (Heating efficiency) ratings—higher numbers mean lower monthly bills.
You can claim an uncapped 30% tax credit on the total cost of a qualified geothermal system, including installation, through December 31, 2032. This is part of the Residential Clean Energy Tax Credit .
Unlike air-source heat pumps, geothermal units remain highly efficient even in temperatures well below zero because they rely on stable ground temperatures (approx. 50°F).
Ensure your contractor is accredited by organizations like the International Ground Source Heat Pump Association (IGSHPA) to guarantee proper loop sizing and system design. Performance Benefits
These systems are 3–6 times more efficient than standard electric heating, often delivering 4 units of energy for every 1 unit consumed .