In Westminster, Wandsworth, Kensington and Chelsea the average household spends £955 a year on heating — 1% lower than the UK average of £960. Typical homes are 93.0 m² with 4.0 rooms. The local population is around 4,855 residents (Census 2021). Switching to an air-source heat pump could save up to £382 a year for an average home after the £7,500 Boiler Upgrade Scheme grant.
Areas covered
Rest of, Belgravia, (north of, Eaton Square, ), Knightsbridge, (eastern half) and, Chelsea, (a corner)
Typical air-source heat-pump installation costs range from about £6,000 at the low end to roughly £18,000 at the high end. Most homes fall somewhere between £7,000 and £15,000. These prices are before the £7,500 BUS grant (in addition, qualifying rural and island homes in Scotland may receive a further £1,500 uplift under the Home Energy Scotland scheme, for up to £9 000 of grant funding).
Installation costs in Westminster, Wandsworth, Kensington and Chelsea are around 20% higher than the UK average.
| Category | National cost range | Adjusted for SW1X (×1.20) | Net after £7,500 BUS grant |
|---|---|---|---|
| Small flats / simple installs | £ 6,000 – £ 7,000 | £ 7,200 – £ 8,400 | from ~£ 1,000* |
| 2–3-bed semis / moderate upgrades | £ 8,000 – £ 12,000 | £ 9,600 – £ 14,400 | £ 2,100 – £ 6,900 |
| Large detached / extensive work | £ 13,000 – £ 18,000 | £ 15,600 – £ 21,600 | £ 8,100 – £ 14,100 |
* Minimum net costs rarely fall below £1,000 after grant, since most installs incur at least minor extra work.
| Lower end |
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|---|---|
| Mid end |
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| Upper end |
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Heat pump FAQs
How much does a heat pump cost here?
About £5,300 for a typical 3-bedroom home after the £7,500 grant.
How much can I save on heating bills?
Roughly £382 per year for the average home at current price-cap rates.
- £955 Average Heating Cost UK avg £960
- 93.0 m² Median Floor Area UK avg 84.7 m²
- 4.0 Average Rooms UK avg 4.4
Local energy snapshot
Latest tariff window: 2025Q4
Ofgem region & price cap
London · 25.63p/kWh · 46.06p/day
PV potential (south-facing)
992 kWh per kWp/year
Dwelling mix
EPC certificates
3,520 on record
Ready to get started?
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Also in Your Area: Solar Panel Potential
Heat pumps increase electricity usage. Solar panels can offset your higher bills.
Solar saves ~£968/year
Payback: 12.6 years
Solar saves ~£1,154/year
Payback: 10.6 years
- Typical system 6 kW
- Installation cost ~£12,200
- Annual generation 5,954 kWh
See detailed solar data for SW1X →
Data from our sister site, Solar By Postcode UK
Compare nearby areas: SW1P (Westminster, Wandsworth) · SW1V (Westminster, Wandsworth) · SW1W (Westminster, Wandsworth, Kensington and Chelsea) · SW1Y (Westminster, Wandsworth) · SW2 (Lambeth) · SW3 (Westminster, Kensington and Chelsea, Lambeth)
Heat Pump Installation & Ownership Guide
Timeline, planning rules, maintenance and what to expect
Heat Pump Installation & Ownership Guide
Timeline, planning rules, maintenance and what to expect
Official Heat Pump Resources & Data Sources
BUS, Ofgem, planning rules, MCS and the data behind the numbers
Official Heat Pump Resources & Data Sources
BUS, Ofgem, planning rules, MCS and the data behind the numbers