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F357 · 09-15-14, 04:24 AM

I have an office in a shop building that I would like to heat with a small heat pump. The heat could come from the shop area, not the outdoors, and that usually doesn't drop below 40-50 degrees.

I'm wondering if I could modify a regular window A/C unit to be a heat pump? I have an 8000 BTU unit that needs a new fan I could modify. If I used a different thermostat, and blew air from the condenser into the office, would this work? I'm thinking it would work at moderate temperature but won't work if it gets very cold. Does anybody know what the coldest outside temp is I could have and still get heat?

I know they sell window unit heat pumps that really do pump heat in the winter, but they cost significantly more. Does anybody know what makes those so much more expensive?

09-15-14, 04:24 AM	#1
F357 Helper EcoRenovator Join Date: Sep 2014 Location: Oregon Posts: 30 Thanks: 0 Thanked 1 Time in 1 Post	Window unit for heater? I have an office in a shop building that I would like to heat with a small heat pump. The heat could come from the shop area, not the outdoors, and that usually doesn't drop below 40-50 degrees. I'm wondering if I could modify a regular window A/C unit to be a heat pump? I have an 8000 BTU unit that needs a new fan I could modify. If I used a different thermostat, and blew air from the condenser into the office, would this work? I'm thinking it would work at moderate temperature but won't work if it gets very cold. Does anybody know what the coldest outside temp is I could have and still get heat? I know they sell window unit heat pumps that really do pump heat in the winter, but they cost significantly more. Does anybody know what makes those so much more expensive? Last edited by F357; 09-15-14 at 04:26 AM..