HeatPumpHeat Pump Costs in Southampton (SO18)
Average air source heat pump installation cost, running costs, and savings for the SO18 postcode district.
Installation Cost
Air Source Heat Pump
£11,219
£3,719
After £7,500 BUS grant
Ground Source Heat Pump
£24,604
£17,104
After £7,500 BUS grant
Costs are area averages and vary by property size, insulation level, and installer. See full cost breakdown.
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Annual Running Cost Comparison
Based on standard electricity rate (24.5p/kWh). Off-peak tariffs reduce heat pump costs significantly. See tariff comparison.
Annual Savings vs Current Heating
| Current Fuel | Annual Cost | Heat Pump Cost | Annual Saving |
|---|---|---|---|
| Mains Gas | £946 | £944 | £2/yr |
| Heating Oil | £1,233 | £944 | £289/yr |
| LPG | £1,459 | £944 | £515/yr |
Running costs assume standard electricity tariff (24.5p/kWh). Off-peak tariffs (7-10p/kWh) improve heat pump savings significantly.
Good with insulation
Heat pump suitability for this area
Off-Gas Grid
8% of homes
Avg EPC Rating
65 (Band D)
COP Estimate
3.4
Above UK average
Typical Property
Flat
Noise Concern
Moderate
Frequently Asked Questions
How much does an air source heat pump cost in Southampton?
The average air source heat pump installation in Southampton (SO18) costs £11,219. After the £7,500 BUS grant, the effective cost is £3,719.
Is my home in SO18 eligible for the BUS grant?
Most existing properties in SO18 are eligible for the £7,500 Boiler Upgrade Scheme grant. You need a valid EPC, an MCS-certified installer, and must not have received a previous BUS grant. New builds are excluded.
Will a heat pump save me money in Southampton?
If you're on mains gas, a heat pump could save around £2/year in Southampton. If you're on oil heating, savings are typically £289/year. Savings increase significantly on off-peak electricity tariffs like Octopus Cosy.
What is the COP of a heat pump in Southampton?
The estimated Coefficient of Performance (COP) for heat pumps in Southampton is 3.4. This means for every 1 kWh of electricity used, the heat pump produces 3.4 kWh of heat. This is above the UK average, thanks to the milder climate in this area.
Do I need to insulate my home before getting a heat pump in SO18?
Most homes in SO18 have reasonable insulation (average EPC score 65, band D). While improving insulation always helps, many properties here can proceed directly with a heat pump installation.
Nearby Postcodes
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