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Joined 1 year ago
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Cake day: June 8th, 2023

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  • It’s a Carrier 38MARB Performance Heat Pump, and it SAYS it’s rated at 100% efficiency down to 5 deg F but I can tell you from experience that it starts buckling below freezing. I have monitored it over a whole winter season and when we hit the 20s it starts running defrost cycles every 15-20 minutes. Each cycle takes about 5-10 minutes to defrost. It’s not able to keep the room warm.

    Granted, this is a 500 sq ft room with a wide opening to the next room and a 25’ ceiling. I don’t think it was a great use-case for heating in general. For cooling, this thing is irreplaceable. It barely breaks a sweat and uses almost no energy, while keeping the room at any low temperature I set it to. I’ve yet to see it have any issues cooling, even when it’s 90F and humid outside.