Boiler upgrades – save £2,840
The experts said: “Boilers are improving in energy efficiency all the time.
“If you need to replace your boiler, a new model could cost around £4,000 including radiator valves, but you could save almost £3,000 on bills within five years if you’re in a mid-terrace house.”
Double glazing – save £2,647
Britons can lose 20 percent of heat through standard windows, but investing in double glazing could help make savings of over £2,600 in heating bills over five years.
Installation costs average out at around £4,500 for A-rated PVC windows in the average semi, compared to around £15,000 for A-rated hardwood windows.