In Cornwall the average household spends £1,109 a year on heating — 16% higher than the UK average of £960. Typical homes are 86.0 m² with 4.5 rooms. The local population is around 9,725 residents (Census 2021). Switching to an air-source heat pump could save up to £444 a year for an average home after the £7,500 Boiler Upgrade Scheme grant.
Areas covered
Ludgvan, Penzance, Praa Sands
See more in the TR area hub.
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 Cornwall are around 10% higher than the UK average.
| Category | National cost range | Adjusted for TR20 (×1.10) | Net after £7,500 BUS grant |
|---|---|---|---|
| Small flats / simple installs | £ 6,000 – £ 7,000 | £ 6,600 – £ 7,700 | from ~£ 1,000* |
| 2–3-bed semis / moderate upgrades | £ 8,000 – £ 12,000 | £ 8,800 – £ 13,200 | £ 1,300 – £ 5,700 |
| Large detached / extensive work | £ 13,000 – £ 18,000 | £ 14,300 – £ 19,800 | £ 6,800 – £ 12,300 |
* 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 £4,233 for a typical 3-bedroom home after the £7,500 grant.
How much can I save on heating bills?
Roughly £444 per year for the average home at current price-cap rates.
- £1,109 Average Heating Cost UK avg £960
- 86.0 m² Median Floor Area UK avg 84.7 m²
- 4.5 Average Rooms UK avg 4
Compare nearby areas: TR17 (Cornwall) · TR18 (Cornwall) · TR19 (Cornwall) · TR21 (Cornwall, Isles of Scilly) · TR26 (Cornwall) · TR27 (Cornwall)
Heat Pump Installation & Ownership Guide
Everything you need to know
Installation Timeline
Planning Permission Requirements
Maintenance & Ownership Costs
Official Heat Pump Resources & Data Sources
Regulatory & Grants
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Visit Official Site
Ofgem Energy Price Cap
Official cap figures, update timetable and how rates are calculated. -
Visit Official Site
Boiler Upgrade Scheme (BUS)
Grant rules, eligibility checker and application steps. -
Visit Official Site
Permitted-Development Rules for Heat Pumps
Full legal criteria (noise ≤ 42 dB(A), unit volume ≤ 1 m³, siting, listed-building caveats). -
Visit Official Site
Planning & Noise Guidance (DESNZ)
Plain-language tips on boundary distances and acoustic tests.
Cost, Savings & Best Practice
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Visit Official Site
Energy Saving Trust – Air-Source Heat Pump Advice
Running-cost calculators, sizing tips and maintenance basics. -
Download PDF
MCS Best-Practice Heat Pump Guide (PDF)
Detailed but homeowner-friendly design and installation standards. -
Search Installers
Find an MCS-Certified Installer
Search tool to verify local companies before you request quotes. -
View Study (PDF)
Delta-ee / BEIS Cost Study (2020)
Benchmark install prices we reference in our calculator.
Data Transparency & Carbon
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View Data Source
Census 2021 Postcode Resident & Household Data
Source for the local population figures on our sector pages. -
View Live Data
National Grid Carbon Intensity Live Data
Real-time CO₂ per kWh; underpins our carbon-saving estimate in the calculator. -
View Statistics
Department for Energy Security and Net Zero - Heat Pump Trends
Quarterly data on the number of heat pumps installed in the United Kingdom.