Window Shaker (R410) to Heat Pump (R290)

CrankyDoug · 10-22-16, 11:24 AM

I would like to replace the propane heater in my camper with a small heat pump. The current 5000 BTU window shakers are quiet and efficient but inevitably lose their R410 after about three years. If I could convert to R290 and replace the evap coil with another condenser, then install a reversing valve, I would have a heat pump.

Has anyone tried converting a R410 unit to R290? I'm having trouble finding a 5000 BTU R22 unit that isn't worn/rusted out. I would convert the existing rooftop unit but it is 13K BTU and the fan alone consumes 150-180W.

Doug

10-22-16, 11:24 AM	#1
CrankyDoug Apprentice EcoRenovator Join Date: Jul 2016 Location: Georgia Posts: 100 Thanks: 6 Thanked 14 Times in 11 Posts	Window Shaker (R410) to Heat Pump (R290) I would like to replace the propane heater in my camper with a small heat pump. The current 5000 BTU window shakers are quiet and efficient but inevitably lose their R410 after about three years. If I could convert to R290 and replace the evap coil with another condenser, then install a reversing valve, I would have a heat pump. Has anyone tried converting a R410 unit to R290? I'm having trouble finding a 5000 BTU R22 unit that isn't worn/rusted out. I would convert the existing rooftop unit but it is 13K BTU and the fan alone consumes 150-180W. Doug