System selection &
Installation requirements
Performance Comparisons
The performance or COP of all the GHP systems as determined
in the US by ARI 325 & 330 standards or in CANADA the CSA 446 M-94 will
normally be in the range of 3 to 3.3 and is largely dependent on the Entering
Source Water Temperature (ESWT) and the Entering “Sink” Water
to the Heat Pump.