View Full Version : What brands/models offer demand defrost control on HP's?
02-18-2007, 03:48 PM
I'm trying to find which brands and/or models offer demand defrost control on HP's? Seems like hard info to find.
Also, which brands don't would be just as helpful.
02-18-2007, 05:03 PM
All American Standard and Trane heat pumps have demand defrost.
Lennox uses demand defrost on their top end units, I'm not sure about their lower end units.
I think Carrier uses it on some units, I'm not sure though.
Rheem/Ruud use it on at least some of their units.
I have no idea what other brands are doing on their newer equipment.
02-18-2007, 06:15 PM
York uses it on a lot of units
I don't think Carrier/Bryant use it at all
Rheem/Ruud and even the cubes use it
rheem n u
02-18-2007, 08:06 PM
all of rheems have it even have it,even the corse air line
02-18-2007, 10:56 PM
What about Goodman?
02-18-2007, 11:05 PM
I don't think Goodman/Amana have it. But I wish they did.
02-19-2007, 10:31 AM
I have a 1.5 ton Goodman with demand defrost.
I retrofitted it myself using a YorkGuard IV controller from leftover part stock. Works great and rarely defrosts, only when needed, as advertised.
It was not a difficult retro, but having all of the parts and sensors available was a key part. I actually did it in the mid of the first winter season when I got tired of hearing it defrost every 90 minutes, and not seeing any frost.
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