Heat Pump Running Cost Calculator
Compare annual running costs of a heat pump against your current heating system. Uses Ofgem Q1 2026 tariffs: electricity 24.5p/kWh, gas 6.4p/kWh.
Your heating details
Typical: 3-bed semi = 12,000 kWh. 4-bed detached = 18,000 kWh. Check your energy bills.
Typical range: 2.5 (poorly installed) to 4.5 (excellent). Average UK install: 3.2-3.5.
2.5 (poor)3.5 (average)4.5 (excellent)