> Here in the mid-Atlantic, my air-air heat pump struggles once things get well below freezing. Which it does a few days a year. How far north are you (IECC cl

> Here in the mid-Atlantic, my air-air heat pump struggles once things get well below freezing. Which it does a few days a year. How far north are you (IECC climate zone)? What is the make and model of your unit? Is it a cold climate air-source heap pump (ccASHP)? * https://ashp.neep.org/#!/ https://ashp.neep.org/#!/ * https://neep.org/heating-electrification/ccashp-specification-product-list https://neep.org/heating-electrification/ccashp-specificatio... Because there are folks in Climate Zone 7 in the northern tip of Maine (Caribou) that use heat pumpss * https://www.youtube.com/watch?v=OcwIz6heDss&t=43m21s https://www.youtube.com/watch?v=OcwIz6heDss&t=43m21s Mitsubishis can work down to -13F/-25C and still have a COP of 2.08 (1=resistive heating): * https://www.mitsubishicomfort.com/articles/keep-warm-this-winter-inverter-technology-for-any-climate https://www.mitsubishicomfort.com/articles/keep-warm-this-wi... * 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...