Home insulation in Exeter
£512 to £7,975 installed, and 41% of homes in the council area rated EPC D to G.
What insulation costs in Exeter
Loft only
£512–£1,221
Saves up to £233 a year. Pays back in about 3 years.
Loft + cavity walls (most common)
£2,014–£4,802
Saves up to £478 a year. Pays back in about 6 years.
Full package
£3,344–£7,975
Saves up to £546 a year. Pays back in about 9 years.
Source: Home Energy Quotes Cost Index, costs modelled September 2026, savings at the October to December 2026 price cap. Prices are estimates and include installation and VAT. Actual costs may vary.
Exeter in numbers
Published statistics for the Exeter council area, not our estimates.
41% of homes with an EPC in the Exeter council area are rated D to G, and the median energy score is 70, which is band C. The council is part of a Warm Homes: Local Grant consortium led by Devon, allocated £4,064,026 in principle across the consortium for April 2025 to March 2028.
| Exeter council area | Figure | Source |
|---|---|---|
| Homes with an EPC rated D to G | 41% | ONS, EPCs lodged to March 2025 |
| Median EPC energy score | 70 (band C) | ONS, EPCs lodged to March 2025 |
| Warm Homes: Local Grant, 2025 to 2028 | £4,064,026 to the consortium led by Devon | DESNZ, list updated July 2026 |
| Households on mains gas heating only | 76.4% | Census 2021, ONS |
| Electricity network operator | National Grid Electricity Distribution (South West England) | NESO licence area boundaries |
These are published official statistics for the Exeter council area, which covers Exeter, not Home Energy Quotes estimates. Sources checked 6 October 2026.
Is Exeter a good place for home insulation?
The area’s housing stock includes a range of properties suited to home insulation installations throughout Exeter. Combined with South West’s energy prices, home insulation installations here may offer good value (individual results will vary).
Exeter has a population of 130,000, and the area falls within the South West region. We recommend getting at least 3 quotes to compare prices.
Find Installers in Exeter
We recommend getting at least 3 quotes from qualified installers before making a decision. Check reviews, ask for local references, and make sure warranties are clearly stated in writing.
What to check before hiring an installer in Exeter
- Qualifications — check the installer holds relevant qualifications and certifications for home insulation before signing any contract
- Local references — ask for completed jobs in Exeter or Devon
- Reviews — check online reviews before committing
- Warranty — product and workmanship warranties should be clearly stated in writing
- 3 quotes minimum — we recommend comparing at least three quotes to ensure you get a fair price
Questions about home insulation in Exeter
How much does home insulation cost in Exeter?
How energy efficient are homes in Exeter?
Is there a grant for home insulation in Exeter?
The Warm Homes: Local Grant may fund insulation and low-carbon heating in Exeter for homes in England with an EPC rating of D to G, where household income is usually £36,000 or less or someone receives certain benefits.
How long is the payback period in Exeter?
Do I need planning permission in Exeter?
How do I find a good installer in Exeter?
Get quotes for your home in Exeter
Up to three approved installers who cover Exeter may contact you. Free, no obligation.
Exeter on the map
Home Insulation in nearby towns
Last reviewed: . Costs are modelled estimates from the Home Energy Quotes Cost Index — see how we calculate them. Grant rates are checked against GOV.UK.