Majestic-Feedback541 t1_jcwj8g7 wrote on March 20, 2023 at 2:30 AM

Reply to comment by Syrhen in Heat pump for sole heat source? by Syrhen

During that cold snap, the one in the apartment did not work. The Landlord had to run out and purchase a bunch of space heaters for tenants and pipes froze. So, no, they don't exactly operate on extreme temps correctly..

thesilversverker t1_jde368m wrote on March 23, 2023 at 7:00 PM

They become resistive electric heat around -5/-10.

They work just fine, but costs more. If you hire a joe blow to size and install, and they dont do a schedule J, they might undersize, leading to freeze.

If you've got a cheaper, non-variable $/BTU option, keep it for cold weather. We dont live in the UP tho, they're fine as your primary in maine.

mainebitch1 t1_jdjbsz8 wrote on March 24, 2023 at 8:17 PM

Wrong btu output drops massively when you approach the op limits my 36k btu rated to -30 puts out 8k btus at -20.

Try fuckin heating your house @-20 with 8k btus, so many uneducated jackasses in this sub its ridiculous. And i install them for a living

thesilversverker t1_jdjr3q7 wrote on March 24, 2023 at 10:02 PM

Why the shit you people talking -30 like it's at all common? Yea, cap drops there, but we might get 8 hours of -30 temps in a decade?

Checked mine - i'm still getting nearly 30k/36k at -15f, the record low point this winter. Which was like maybe 8 hours. Since we expect these temps, any competent installer would size for the realistic scenario.

mainebitch1 t1_jdklk47 wrote on March 25, 2023 at 1:51 AM

What kind of an idiot would have back up heat? ^this guy^^^^^^