Energy

Heat pump vs gas boiler

The real annual running cost for this house, and how fast a heat pump pays back after incentives.

Your inputs

Annual gas use (Smc)

Smc

Gas price (€/Smc)

€

Electricity price (€/kWh)

€

Boiler efficiency92%

Heat-pump seasonal COP (SCOP)3.2

Heat-pump install cost (€)

€

Incentive: detrazione / Conto Termico (€)

€

Running cost

You save per year€40314.9 years

Gas boiler, per year

€1,260

Heat pump, per year

€857

Payback time

14.9 years

Compares variable ENERGY cost only. It ignores gas/electricity standing charges and taxes. Assumes a gas heating value of ~9.94 kWh/Smc; boiler efficiency, SCOP and prices are all yours to set. Enter a higher efficiency (condensing boilers exceed 100% on PCI) for a stricter, less heat-pump-flattering comparison. Estimate only; real bills vary with weather, insulation and tariffs.