Find Out Why Geothermal Is the Only Comfort System That Pays You Back
Savings Calculator

How is efficiency rated for geothermal?

All heating and cooling systems have a rated efficiency from a U.S. governmental agency. Fossil fuel furnaces use AFUE. Air conditioners use SEER while heat pumps use HSPF and SEER.

Geothermal heat pumps rate heating efficiencies according to their coefficient of performance of COP. It’s a scientific way of determining how much energy the system produces versus how much it uses. Most geothermal heat pump systems have COPs of 3-4.5. The WaterFurnace Envision holds the highest recorded certified performance of 5.4 COP in an open loop. That means for every dollar of energy used to power the system, $5.40 of energy are supplied as heat. Where a fossil fuel furnace may be 78-98% efficient, a geothermal heat pump is about 500% efficient.

For cooling, geothermal units are rated by Energy Efficiency Ratio (EER). EER is a measure of efficiency in the cooling mode when measured at a constant temperature (95%). The higher the EER, the more efficient the unit. The WaterFurnace Envision holds the highest recorded certified performance of 30 EER for closed loop.

The Process Is Simple
Making the Switch Is Easy; Start Saving Today!
See What Our Customers Have to Say About Our Excellent Service Quality

“I have dealt with heating/AC companies before but Arronco takes the cake on customer attentiveness! Extremely pleased with things every…”

Rodney Leadingham

“The benefit of the investment became clear after the Arronco analysis, and after you brought staff to the house for…”

Lundy Sparks

“Your staff were very professional, efficient and showed concern for us and our home. I was amazed at how quickly…”

Ed J. Vogel

“Just wanted you to know what very nice men the Arronco technicians were and we think they did a good…”

Cheryl Lindsey
For More Reviews Visit: