Date
Inquiry

The efficiency of a ground-source heat pumps varies depending on the ground or water temperature. How should the efficiency (EER) of a ground-source heat pump be determined - based on the mean temperature below frost line, bin-weather analysis, or some other method?

Ruling

Credit for EA 6 must be based on the rated efficiency (EER or COP ) as determined using the standard test conditions set by the Air Conditioning and Refrigeration Institute. Applicable Internationally.

Internationally Applicable
On
Campus Applicable
Off