It’s not; air source are also not particularly fast to make significant temperature changes compared with gas or electric heat when appropriately sized.
It is more specific to radiant (water/steam/in-floor) solutions though, as that is very slow to adjust
I think that advice is specific to the “underground heat exchanger” type of heat pump.
It’s not; air source are also not particularly fast to make significant temperature changes compared with gas or electric heat when appropriately sized.
It is more specific to radiant (water/steam/in-floor) solutions though, as that is very slow to adjust