Is the Chiltrix AHRI cert and IPLV rating meaningful?
ranson
| Posted in General Questions on
I looked at the Chiltrix site, and I see that AHRI has some standards for air to water heat pumps, and Chiltrix has an IPLV EER of 23 and IPLV COP of 6.75 (edit: 3.95 for heating) and is AHRI certified. I’ve seen past skepticism about the COP of the Chiltrix heat pump, and I don’t recall exactly why. Does AHRI certification mean that there’s independent lab testing of the COP and EER? Or can an AHRI certified product have untested inflated efficiency claims?
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Oh, hey, that COP should be 3.95 for heating. 6.75 is the COP... maybe if you're operating it as a heater under normal cooling conditions? (edit: I'm wrong, it's the cooling COP expressed in the sensible units of W/W) Anyway, 3.95 seems to be the right number for heating under heating conditions.
Today I learned that EER uses the horrible units of BTU/h/W, and this is why EER and cooling COP aren't the same. And that makes the COP of 6.75 *for cooling* equivalent to 23 EER.
So, is there reason anymore to doubt Chiltrix's efficiency specs? Does AHRI certification mean I can trust the efficiency numbers they provide?
I note that the AHRI certificate itself says very little about the unit's performance, so it's very hard for me to tell what is certified.
> 3.95 seems to be the right number for heating under heating conditions.
Change this to "under certain heating conditions".