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I know this has nothing to do with running but i'm looking for a bit of advice from any heating engineers, green deal assessors etc.
My home is a 4-bed detached which has never had any cavity wall insulation and is using a 20 year old boiler which, if the internet is to be believed, is rated G for energy efficiency.
I'm currently paying over £100 per month in fuel bills and thats just for using the bare minimum times my timer uses (1.5 hours per day for heating and water.)
Would it still be worthwhile going down the route of having cavity wall insulation installed and a new, more efficient boiler or would i end up paying more due to having to pay back the costs of these installations from my energy bills?
Any help and advice would be much appreciated.