I have a Vokera Compact 29HE boiler in a house with 6 people. (rated B). Currently my combined Gas and Electricity bills are ?2600 per year - just over half being gas. Will changing my boiler greatly reduce this cost? I don't think my house is particularly warm in the winter, i have the heating on a timer in the morning and evening only so the weekend in the day its freezing. Any ideas/suggestions would be most welcome.
The utility bills don't make any sense unless you reference them to a location. Nome, Alaska vs. Sao Paulo, Brazil, for example. If your current boiler is 80% efficiency and you get one that's 90% efficient, you can expect to save 10% of your heating costs per year. If that happens to be 130 Pounds? It will take 20 years just to recover the cost of a new boiler. The money would be better spent on reducing your energy losses, such as better windows and doors, more insulation in the attic, and other things that an energy audit can find. Make sure you get a blower door test and an infrared scan of the house. Then you can really save some energy, possibly in the 20%-30% range.
