Heat pump running cost in Liverpool
Liverpool sits in the Merseyside and North Wales supply region, run by SP Energy Networks, which has the highest capped electricity unit rate of the 14 regions. In Liverpool, electricity is capped at about 27.86p/kWh and gas at about 7.91p/kWh (Ofgem cap, Oct-Dec 2026). A typical 3-bedroom semi (around 12,000 kWh of heat a year) would cost roughly £955/yr to run an air source heat pump (SCOP 3.5), versus about £1,163/yr on gas. That is about £208 saved a year. Enter your own home below to see your figure.
Your standard rate. The tariff scenario is shown separately.
Efficiency. 3.5 is typical.
On a standard tariff (price cap)
electricity at 27.86p/kWh
£208 /yr saved
Heat pump £955/yr · payback 18 yrs
On a heat pump tariff (~15p/kWh)
cheap-rate electricity
£649 /yr saved
Heat pump £514/yr · payback 5.8 yrs
Heat pump tariffs (Octopus Cosy, EDF, Scottish Power) offered off-peak rates of about 14p to 15p/kWh in June 2026. The ~15p scenario assumes most heating runs in the cheap hours.
- Now: mains gas heating
- £1,163/yr
- Gas standing charge saved
- £108/yr
- Heat pump electricity use
- 3,429 kWh/yr (~286/month)
- Indicative system size
- ~6kW
- Install after grant
- £3,750
- CO₂ saved
- 1,730 kg/yr
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Estimate only. Real figures depend on your home, install and tariff. Prices: Ofgem cap, Oct-Dec 2026.
Heat pump running cost in Liverpool by home type
Typical yearly cost at Merseyside, North Wales & Cheshire supply region prices (Oct-Dec 2026), for homes with good insulation.
| Home | Heat kWh/yr | Heat pump £/yr (cap) | Heat pump £/yr (HP tariff) | Gas boiler £/yr |
|---|---|---|---|---|
| 1-bedroom flat | 4,500 | £358 | £193 | £504 |
| 3-bedroom flat | 9,000 | £716 | £386 | £899 |
| 2-bedroom terraced house | 8,000 | £637 | £343 | £811 |
| 3-bedroom semi-detached house | 12,000 | £955 | £514 | £1,163 |
| 2-bedroom bungalow | 9,500 | £756 | £407 | £943 |
| 3-bedroom bungalow | 12,500 | £995 | £536 | £1,207 |
| 4-bedroom detached house | 19,250 | £1,532 | £825 | £1,800 |
The tariff you are on matters more than the house
Every figure above uses the 26.32p/kWh price cap. A dedicated heat pump tariff runs nearer 15p in its cheap windows, roughly 43 percent off the unit rate, which moves the running cost further than any change to the property itself.