Heat Pump Cost Comparison Table: All Heating Systems UK 2026

The definitive side-by-side comparison of every major UK heating system -- using the same property, the same assumptions, and the same methodology. Over 20 years, an ASHP with the BUS grant and TOU tariff costs £31,200 total. The gas boiler costs £38,350. Direct electric costs a staggering £82,500.

All comparisons use a 3-bed semi, 12,000 kWh heat demand, current energy prices with 3% annual inflation. For detailed ASHP costs, see our cost guide. For the heat pump vs gas deep-dive, see our comparison guide.

Installation Cost Comparison

Annual Running Cost Comparison

For detailed running cost analysis, see our running costs guide.

20-Year Total Cost Comparison

With a TOU tariff, both ASHP and GSHP are clearly the cheapest options over 20 years. For the full 20-year analysis, see our total cost of ownership guide.

Which System Wins for Each Scenario?

For off-gas properties, ASHP is dramatically cheaper than oil, LPG, or electric over 20 years. For detailed GSHP comparison, see our ground source guide. For personalised comparison, use our calculator.

Homes with solar panels can further reduce heat pump running costs by 15-25%, making the ASHP and GSHP advantage even more pronounced.

Frequently Asked Questions

What is the cheapest heating system to run?

GSHP, followed closely by ASHP. Both beat gas on a TOU tariff.

Is a heat pump cheaper than gas over 20 years?

With the BUS grant: roughly equal at standard rates, £7,000 cheaper with TOU. Without grant: gas is cheaper at current prices.

Should I choose air source or ground source?

ASHP for most. GSHP if you have land and want maximum efficiency. See our ground source guide.

What about hydrogen boilers?

Not included -- no UK hydrogen grid exists and costs are unknown.

How accurate are these comparisons?

Based on current prices and typical assumptions. Your costs could be 10-20% different. Use our calculator for a property-specific estimate.