While im sure turning down water flow and water temps will save a little, we are just talking a small amount

The oldies down the road from me, phoned me and asked me to go and have a look at the boiler as they had heard turning it down could save money, they were in such a state about it, talking about getting a new boiler that was more efficient, had a gas fitter come around and give them a price for a new boiler, turned out the boiler was 8 years old , thats not a typo, 8 years old, of course the gas fitter was happy to give them a price

I said to them, while turning down the flow will save a little, it really will be a little, it did point out having the rear door open for the dog all day isnt helping, but they have always done that