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GAS CALCULATOR

Boiler efficiency fuel cost

Compare useful heat cost when two boilers have different efficiencies.

Enter amounts in the same currency throughout. Nothing is sent to our server.

How this calculation works

This estimate uses the values you enter and the selected tariff or fee rule. Provider taxes, tiers, credits, minimums, seasonal rates and eligibility rules can change the official bill; compare the result with your provider statement.

Before you use the result

This is an illustrative estimate, not a provider quote or your actual bill. Enter your current rates and charges from your plan or latest statement. Prices, billing rules and coverage can change.

Find your provider

British Gas · Enbridge Gas · Search all providers

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