Most economical way to heat a house

[Deleted member 294929]

My point is that when a house is insulated we'll then there is nothing that's expensive to run.

 

[akist]

No, we do not live in the house. Before CH was installed a couple of days ago, we had about 3C and 95% humidity in the house. There were huge gaps at the "front door" (a sheet of ply loosely covering the opening). I was running a diesel heater to allow us to work in the house.

CH was installed on Thursday. No radiators upstairs and missing a couple of radiators downstairs.

Today I made and installed a "front door", closed all the gaps, it was blowing an arctic gale in before. I now have a 3mm gap along one side of my "front door" and it is unbelievable the cold air that it lets in.

I have had the CH ticking over at 45C flow all day and night trying to warm the house up. Without the front door in place, I was at 10C this morning. By the time I left this evening (and with the front door) it was already up to 11.5C. Boiler is constantly on.

I think it is quite economical at 45C. But I do not have a lot of data to go on, only what the smart meter shows.

 

[robinbanks]

And as you're finding, insulation is only part of the answer. Careful attention to detail on sealing up the envelope to prevent draughts is another.
It's possible to create houses that do not need heating systems; the right balance of insulation, draughtproofing, insolation, heat recovery and quality envelope components will make a huge difference