4 ms·
It's my experience that they do stop working completely at some temp. The defrost cycle creeps up to 100% and there goes the heat.
by NDizzle 3y ago
It's my experience that they do stop working completely at some temp. The defrost cycle creeps up to 100% and there goes the heat.
- simonblack 3y agoThat's because the heat-exchanger is not efficient enough to prevent too much frost from building up. The answer there is a better (probably bigger) heat-exchanger.
- NDizzle 3y agoYep, correct. As many have pointed out in this thread though, HVAC is full of trade offs. I COULD get a bigger heat exchanger.. Although my furnace is already a 5 ton unit. The question is, in the Ozarks, where I am, are the 1-4 days a year where it's too cold to run the heat pump worth paying the extra money for the larger system? I added an efficient wood stove instead. There's a good tax rebate that covers installation as well - I took advantage of that last year.