>> I regularly see people saying the money would be much more effective, and cheaper per
>> property, if it were spent on more insulation for homes rather than heat pumps. I
>> suppose that doesn't achieve the shift away from gas though.
You'd certainly save a lot of gas if all houses were well insulated, even if they were all still on gas. I think the record worst year for the 120 sq.m. bungalow we knocked down was 27,000 kWh of gas!
>> I've also read the stories of pumps being noisy, expensive and inefficient, particularly when
>> retro-fitted to existing CH.
Can't hear ours, although it isn't next to a habitable room. More importantly, the neighbour whose house is 6 metres from it can't hear it.
>> It's the sort of thing which would normally raise interest but in this instance I've
>> read enough real life stories (from forums, not newspapers) that Ill let it pass for
>> now.
If you have gas you won't save anything except to the extent you can use solar electricity to run it.
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