New Mitsubishi Heatpumps that have been hyped up to hell and back here. Past -14c they flat out stopped working for him.
I'm sure there'll be a lot of "oh it's the type of heatpump" "oh it's the installation" thing, but he isn't the only aquaintance I have who has seen absolutely diddly-squat for heating efficiency when using heatpumps. Around these parts, if it isn't setting something on fire, then you're probably doing heating wrong.
>Nordics
The average low winter temps in Stockholm are what, -5c? Oslo doesn't really get below -10-ish? Non-northern nordics are an indicator of approximately nothing in this discussion. :) Finland loves their steam/hydronic heat, which I will guarantee isn't being run off of heat pumps.
Anything that's closer to the ocean is going to have a significantly milder winter than going proper north.
Above, you claimed that they don't work when the temps hit 0C. Now you tell us a story about them not working at -14C. That's a fairly big difference. Our pumps (mitsubishi hyperheats) struggle a little at 5F (-15C) but they do not stop working, and that's in an old house with terrible insulation.
> Finland loves their steam/hydronic heat, which I will guarantee isn't being run off of heat pumps.
In my case, the steam is being generated by the 240V electric steam generator that takes power from my 7kW ground mount solar array.
I'm sure there'll be a lot of "oh it's the type of heatpump" "oh it's the installation" thing, but he isn't the only aquaintance I have who has seen absolutely diddly-squat for heating efficiency when using heatpumps. Around these parts, if it isn't setting something on fire, then you're probably doing heating wrong.
>Nordics
The average low winter temps in Stockholm are what, -5c? Oslo doesn't really get below -10-ish? Non-northern nordics are an indicator of approximately nothing in this discussion. :) Finland loves their steam/hydronic heat, which I will guarantee isn't being run off of heat pumps.
Anything that's closer to the ocean is going to have a significantly milder winter than going proper north.