In-wall heat pump?

Originally Posted By: rmoore
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Has anyone ever seen one of these. Photo is of interior and exterior of unit. 1987 home with otherwise normal unitary wall heaters. I didn’t get a photo of the remote timer (located very oddly near floor level) but it had some wording on it refering to a “heat exchanger”. The unit “functioned” as far as a fan came on and air was being moved around but I have no idea what it was achieving. The interior panel was heavily painted shut and I didn’t try opening it. I’m disclaiming this thing but was curious if anyone knows what principle it might work on.



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Richard Moore
Rest Assured Inspection Services
Seattle, WA
www.rainspect.com

Originally Posted By: wrobedeau
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I am guessing but it looks like an air to air heat recovery unit. The fresh air to the room may possibly have a heater to further increase air temperature.


Bill Robedeau
A II Z Inspections, LLC


Originally Posted By: rmoore
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Ahhh…that was it…“recovery” not “exchanger”. So…is there an electric element in these? If I see another one, what do I inspect? Anyone got any photos or links for the guts? Can I go to bed now?



Richard Moore


Rest Assured Inspection Services


Seattle, WA


www.rainspect.com

Originally Posted By: rhinck
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You’ll find (2) small fans and a heat exchanger matrix. Look for how clean it is, filter condition, quietness of fans, where it is controlled by a humidistat or a rheostat. Do a search on the BB for Heat Exchanger or HRV-heat recovery ventilation. Try looking at the schematic drawings.



Rick