4 ms·
Modern air source heat pumps can be effective down to -25C (-13F) in heat pump mode, and will automatically switch to resistance heating if needed. I'm buildin
by fyfy18 6y ago
Modern air source heat pumps can be effective down to -25C (-13F) in heat pump mode, and will automatically switch to resistance heating if needed.
I'm building a house where it can get to -35C at times (but usually above -20C in winter) and we will have an air source heat pump for hot water, heating and cooling [0]. Combined with good insulation and 10kW of solar on the roof, we should generate more electricity than we use over the year, and no need to burn any fossil fuels.
My wife has insisted we have a wood burning stove for atmosphere, so that will function as a backup heat source if needed, but most likely it will generate too much heat to be used regularly.
[0] https://www.daikin.eu/en_us/product-group/air-to-water-heat-pump-low-temperature/daikin_altherma_3_r.html https://www.daikin.eu/en_us/product-group/air-to-water-heat-...
- perl4ever 6y agoI tend to take a dim view of the phrase "can be" because it's so weak. It's logically equivalent to "may not be" and is entirely consistent with "essentially never is". But sure, the heat pump in your future home may well be much better than whatever they were doing decades ago. I don't know if my apartment used ground heat, but I doubt it.
- fyfy18 6y agoI meant "can be" in that if you buy one rated for those temperatures it will reach that, but not all heat pumps are rated for that.