Historic climate change deal with legal powers agreed

RenewableCandy · Post by **RenewableCandy** » 26 May 2011, 15:27

I think China's just downgraded us!

Getting back to the heat pumps: don't they require huge amounts of insulation in order to be effective (esp. air-source, which are a lot cheaper to install)?

Actually I think the tacit assumption by HMG is that they'll be powered by nuclear.

Post by **kenneal - lagger** » 26 May 2011, 16:23

RenewableCandy wrote:Getting back to the heat pumps: don't they require huge amounts of insulation in order to be effective (esp. air-source, which are a lot cheaper to install)?

As The Inspector's earlier replies on another thread show people install them because the installation costs are cheaper than a good insulation job. They fail to take into account the running costs of the heat pump and the fact that a 9kW or 16kW heat pump won't fully heat a 20kW heat loss house.

To work properly, the house should be insulated to bring it's heating requirement down to the heat pump output. Most insulation salesmen wouldn't point this out as it adds a cost to their installation and then it can be seen by the customer that insulating the house might be the better investment. Not that the Inspector would agree to that as he works on the plainly stupid premise that fuel costs won't rise.

RenewableCandy · Post by **RenewableCandy** » 26 May 2011, 17:02

My guess is he has insulated to the hilt, but won't admit it to the likes of us