HeatPumpSwitch › Calculator
Heat pump running-cost calculator
Enter what you burn now. This works out the heat your home actually needs, then what a heat pump would cost to deliver the same heat — and shows every step, so you can check it against your own bill.
The link carries your inputs, so you can bookmark this result, send it to whoever you share the bills with, or paste it under a forum question. Nothing is stored on a server — the numbers travel in the address bar.
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Get quotes for your property
Compare at least three installers. Ask each one for the heat-loss calculation and the design flow temperature in writing — that number decides your running cost more than the brand on the box.
Ad. If you request a quote through this link we may be paid a commission by the installer. It does not change your price, and we do not rank companies by how much they pay.