£867 modelled fuel cost/year
Heating cost comparison
Boiler or heat pump?
Enter your quotes, tariffs and annual heat need. The result shows the upfront and yearly difference immediately.
The heat pump models at £71 more per year.
Its entered net upfront cost is £3,000 higher after the potential grant amount.
£938 modelled electricity cost/year
Heat-pump upfront difference+£3,000
Heat-pump annual model difference+£71
This is arithmetic, not a quotation, heat-loss survey, grant decision or savings promise. It excludes standing charges, servicing, finance, repairs, hot-water differences and system-design effects.
Compare the cost of delivering the same useful heat
Fuel consumption, useful heat and equipment output are not interchangeable. Keep annual heat demand fixed while testing boiler efficiency, heat-pump seasonal performance and accepted tariffs.
Establish useful heat
Prefer a room-by-room heat-loss design or a reconciled fuel history that separates hot water and cooking. Applying one assumed efficiency to an unexamined gas bill can make both sides of the comparison look more precise than they are.
Test seasonal performance
A brochure COP at one test point is not an annual result. Model cautious, central and optimistic SCOP cases that reflect emitter or air-delivery design, flow temperature, controls, defrost and backup resistance heat.
Compare complete projects
Upfront totals should state equipment, electrical and building work, controls, hot-water changes, VAT, grant treatment, warranty and exclusions. Running cost alone does not decide disruption, maintenance or comfort.
Limit: This is a scenario model, not a heat-loss survey, quotation, grant decision or savings promise. Actual weather, occupancy, tariffs and commissioning can change the result.
Survey the home
A heat pump needs system design, emitter and hot-water checks. A boiler quote should also define controls, system cleaning and scope.
Check current support
Grant amounts and conditions can change. Use the dated tracker, then confirm on the official scheme pages.
Open grant tracker →Normalise quotations
Compare included equipment, electrical work, warranties, exclusions and payment terms—not headline price alone.
Open quote comparison →