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0 pointssokoloff5mo ago0 comments

100% efficiency is terrible for a heat pump. Electric resistance heat is 100% efficient.

0 comments

doctorhandshake5mo ago

I should have said 100% performance. COP is typically 3-4:1 with mitsu

sokoloffOP5mo ago

Typical seasonal average? Sure.

At -5°F? Hell no!

At +5°F, they rate their own equipment to have a 2.0 CoP.

https://mylinkdrive.com/viewPdf?srcUrl=http://s3.amazonaws.c...

throw0101a5mo ago

Here's a Trane/Mitsubishi unit that has a COP of (at least) 3 at -13F/-25C:

* https://ashp.neep.org/#!/product/156605/7/25000/95/7500/0///...

An LG unit with 2.4 at -4F/-20C:

* https://ashp.neep.org/#!/product/29688/7/25000/95/7500/0///0

Searchable database of cold climate air source heat pumps (ccASHPs):

* https://ashp.neep.org/#!/product_list/

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