How does Southampton's climate affect heat pump performance?

Very positively. Southampton's mild winters (average 5.5°C) mean air source heat pumps run efficiently throughout winter. You'll get more heat per unit of electricity here than in colder regions.

How much could I save on heating in Southampton?

At the Ofgem price cap for 1 October–31 December 2026, a heat pump (COP 3.2) costs about £60–£100 a year less to run than a 90%-efficient gas boiler for a home using 9,000–16,000 kWh of heat a year, or around £170–£210 a year less if you also cap off the gas supply and stop paying the gas standing charge (about £108 a year). Switching from oil saves about £470–£830 a year on fuel at October 2026 prices (heating oil about 11.4p/kWh, not price-capped). For LPG, compare using your own delivery price.

Is my post-war home suitable?

Post-war homes (1950s–1970s) are often excellent candidates. Many have cavity walls that can be insulated cheaply, reasonable garden space for the outdoor unit, and good access for installation. A survey will confirm.

What size heat pump do I need in Southampton?

Southampton's mild climate means slightly smaller systems compared to northern cities. A typical 3-bed semi might need a 6–9 kW unit. Your MCS installer will calculate the exact size from a heat loss survey.

Heat Pumps in Southampton

Independently written

Southampton's sheltered south coast position gives it some of the mildest winters in England — ideal conditions for heat pump efficiency. The £7,500 BUS grant (England and Wales only) is deducted from the installation price.

Figures from Ofgem, DESNZ & GOV.UKNo obligationNot an installer

UK semi-detached houses typical of the local area suitable for heat pump installation

Southampton at a glance

5.5°C

Average winter temperature

Source: Met Office

2050

Heating degree days

Source: Regional data

£843/yr

Est. heat pump running cost

Source: Ofgem rates Q1 2026

£85/yr

Est. saving vs gas

Source: Calculated

Housing in Southampton

Post-war estates, Victorian terraces, and modern waterfront developments. Southampton's coastal location provides milder winters than inland areas.

Heat pump costs in Southampton

An air source heat pump in Southampton typically costs £8,000–£15,000 before the £7,500 BUS grant. After the grant, most Southampton homeowners pay £500–£7,500.

Running costs depend on your property size and insulation. For a typical 3-bed semi in Southampton, expect to pay around £843 per year to run a heat pump — compared to £928 for gas heating. That's a saving of approximately £85 per year.

Southampton's mild climate means lower heating demand and higher heat pump efficiency — you'll get more heat per unit of electricity here than in colder regions.

Air source heat pump installed at a semi-detached house in the local area

Thinking about a heat pump for your home?

Tell us about your home and request a heat pump quote. It takes about two minutes.

Planning a heat pump in Southampton? Check your costs and suitability first

No obligation. We are not installers: we pass your request to an MCS-certified installer covering your area.

Southampton heat pump FAQs

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