Boiler Efficiency

/Boiler Efficiency
Boiler Efficiency 2018-01-17T10:55:22+00:00
Boiler efficiency

When should I get a new boiler?

  • If it is no longer cost-efficient to repair your boiler
  • If you can’t have the amount of control over your heating that you need, for example your controls or timer aren’t flexible
  • If your boiler has a continuous pilot light – it’s a waste of gas
  • If your boiler is G-rated for energy efficiency – all new boilers must be A-rated and will save you a lot of money on your energy bills

How much could I save per year?

A major factor to consider when purchasing a new boiler is how long it will take to pay for itself. If you are replacing an old energy-inefficient one, you will save some money on your gas bills. But the amount you will save depends on how inefficient your boiler is. The costs of replacing and installing a new boiler will be outweighed by the savings you will make over the years.

If you are upgrading an old gas boiler without controls with a new A-rated condensing boiler with a programmer, room thermostat and thermostatic radiator controls, the table below explains how much you could save:

Old boiler rating (% efficiency)Semi detached houseDetached houseDetached bungalowMid terrace houseMid floor flat
G (< 70%)£340£570£290£280£145
F (70-74%)£255£430£215£210£105
E (74-78%)£215£360£180£175£90
D (78-82%)£175£300£145£145£70

Of course, the cost of replacing a boiler varies, but a straightforward gas boiler replacement could cost about £2,300 excluding radiators. The Energy Saving Trust has based these calculations on average homes in England, Scotland and Wales.

What should I consider before replacing my boiler?

You want to make sure that you get the best boiler for your needs and to keep you and your family safe. Here are some things to consider before buying a new boiler: