Sun Oct 25, 2020 3:22 pm #1805111
nallen wrote:Flyin'Dutch' wrote:Electric is brilliant for a lot of stuff and that includes powering air/ground source heat pumps for domestic heating. It will force housing stock to be properly insulated for a start, rather than burning 'cheap' fuel to make up for the losses through ineffective housing stock.
Amen to that. If heat pumps are rolled out as a magic solution and fitted into crappily insulated British houses, wait for the massive push-back against the technology as the enormous heating bills roll in.
Isn't this going to be a significant limiting factor in chasing efficiency, there is only so much that can be done to improve insulation in the existing housing stock. I'm concerned about aftermarket cavity wall insulation, installed in designs that were originally intended to have a cavity.
Also, when you have suspended timber floors at ground level there has to be an air gap open to air bricks, which results in cold floors. Most things I've heard about heat pumps is that you use the heat to provide low-level heat via underfloor heating which is installed under solid floors on top of huge amounts of insulation. This seems to be at odds with the logic behind underfloor heating.
The chancellors recently announcement green deal appears to have some limitations, firstly as far as glazing is concerned it is only available where existing glazing is single glazed. And secondly, it can't be used to fund a more efficient gas boiler, now I understand that we're told that gas has a limited life expectancy but surely even a few years of greater efficiency is better than none?