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Pellet Heating Running Cost Calculator

Enter your annual heat demand and the fuel prices and system efficiencies that apply to you, then press Calculate. The tool works out an estimated annual running cost range for a pellet system compared with mains gas, heating oil and an air source heat pump. Every figure below is an assumption you can change: replace the starting prices with the numbers from your own bills for a result that means something for your home.

Your heat demand
If you used the Home Heat Demand Estimator, enter the figure it gave you here, or follow the link from that tool to carry it across automatically.
Pellet system

Starting prices below are indicative placeholders only, not a quote and not dated. Replace them with your own supplier price.

Mains gas

Starting price below is an indicative placeholder only, not a quote and not dated.

Heating oil

Starting prices below are indicative placeholders only, not a quote and not dated.

Air source heat pump

Starting price below is an indicative placeholder only, not a quote and not dated.

Range width
This spreads each result into a low to high range, to reflect that real prices and real-world efficiency vary. Set to 0 to see a single figure.

Results

Enter your figures above and press Calculate to see an estimated annual cost range for each system.

How this is calculated

For each heating system, the tool divides your annual heat demand by that system's efficiency (or, for the heat pump, by its SCOP) to get the amount of fuel or electricity actually needed. It then multiplies that by the fuel price you entered to get an annual cost in pounds. The low and high figures are that central cost minus and plus the variation percentage you set, not a statistical forecast: they simply show how much the answer moves if your real prices or real efficiency differ a little from what you typed in.

This is an arithmetic comparison tool, not a quotation. It cannot know your actual fuel contract, your property's heat losses in a cold winter, or how a particular stove or heat pump performs in your home. Use it to compare systems on a like-for-like basis, then get quotes and real bills to check the figures before you decide.

The default prices shown are indicative placeholders for working through the arithmetic. They carry no date and are not quotes from any supplier. Before relying on any result, replace them with the prices on your own bills or from quotes you have received.