3 ms·
I'll ask my landlord to install one right away. Probably have to be an earth-exchange system to deal with temperatures lower than 40°F, given that heating my h
by archontes 3y ago
I'll ask my landlord to install one right away.
Probably have to be an earth-exchange system to deal with temperatures lower than 40°F, given that heating my house in winter is the use case.
- PaulDavisThe1st 3y agoMy Mitsubishi Hyperheat units have a COP above 1 down to -15F and still work normally at 5F (northern New Mexico, 6000', overnight). You're getting bad information.
- throw0101b 3y agoMitsubishis can work down to -13F/-25C and have a COP of 2.08: * https://mylinkdrive.com/viewPdf?srcUrl=http://enter.mehvac.com.s3.amazonaws.com/DAMRoot/Original/10006%5CM_SUBMITTAL_MSZ-FS12NA_MUZ-FS12NA_en.pdf https://mylinkdrive.com/viewPdf?srcUrl=http://enter.mehvac.c... If you live in US IECC Climate Zone 4 or above look for a cold climate air-source heat pump (ccASHP): * https://neep.org/heating-electrification/ccashp-specification-product-list https://neep.org/heating-electrification/ccashp-specificatio... * https://ashp.neep.org/#!/ https://ashp.neep.org/#!/ You can also get things installed in a dual fuel arrangement where you still have a gas furnace that kicks in if it does ever get 'too cold'.
- Volundr 3y agoMy Lennox system is break even COP at -10 iirc. By then it's also running the heat strip, but we only hit those temps once or twice a year.