this post was submitted on 01 Nov 2023
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533
Heat pumps can't take the cold? Nordics debunk the myth (techxplore.com)
submitted 1 year ago by [email protected] to c/[email protected]
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Heat pumps can't take the cold? Nordics debunk the myth::By installing a heat pump in his house in the hills of Oslo, Oyvind Solstad killed three birds with one stone, improving his comfort, finances and climate footprint.

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[–] [email protected] 8 points 1 year ago (1 children)

What's your heat pump? I've been looking into them and I can't find one that's willing to say it works past about -15.

[–] [email protected] 12 points 1 year ago* (last edited 1 year ago) (2 children)

The Mitsubishi Hyper heat can work down to -13F, The absolutely best resource I’ve found for heat pump research is the NEEP database which will you give you actual BTU outputs at various ambient temperature readings: https://ashp.neep.org/#!/product_list/
 Also worth considering a geothermal heat pump depending on your geography, as then you have a guarantee of efficiency all year round

[–] [email protected] 2 points 1 year ago

Thanks for the website!

[–] [email protected] 2 points 1 year ago

Second the NEEP database. I'd just add that the lowest temps listed here aren't the actual equipment minimums - each model has a cutoff temp where it will literally shit the bed (except ground source of course). For my mistu hyper heat, it's -26F. Capacity will keep dropping after -13F though (where it's still at like 80% I think).