Quote:
Originally Posted by nomadking
With radiators having to be 3 times the size, heat pump systems are not going to be great.
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If you need to triple the size of your radiators for a heat pump installation, then your radiators are inadequate even with a gas boiler. They’re probably very old, not at all efficient and ought to be replaced anyway.
Worst case in a UK home is likely to be a 2.5x increase, but don’t forget that in many cases that can be achieved by using double or triple panelled radiators with convector fins.