Tell us about your home
Heat demand depends heavily on property size, type, age and insulation.
Used for regional climate adjustment.
Optional. Improves accuracy if you don't know your annual fuel use.
Used for hot-water demand.
Estimate the annual electricity use, running cost and likely saving or extra cost of a heat pump compared with your current heating. Independent, transparent, and honest when the numbers don't stack up.
All figures are estimates. Defaults reviewed July 2026. Not a heat-loss survey or installer quote.
Heat demand depends heavily on property size, type, age and insulation.
Used for regional climate adjustment.
Optional. Improves accuracy if you don't know your annual fuel use.
Used for hot-water demand.
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