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Heat Pump Installers in Exeter

Thermal Earth provides heat pump installation across Exeter, East Devon, and the wider South West. Our expertise includes both ground source and air source heat pump systems, backed by over 20 years of experience and 3,500+ installations across the UK.

Devon’s mild climate and high proportion of off-gas-grid rural homes make it one of the best regions in England for heat pump installations. We have already completed notable projects in the area, including our installation at Lappa Valley in Cornwall and St Margarets in Exeter, a hybrid heat pump system.

Why Heat Pumps Work Well in Devon

Exeter and Devon benefit from the South West’s mild maritime climate, which is ideal for heat pump efficiency. Even air source heat pumps maintain excellent performance throughout Devon’s relatively warm winters.

Key advantages for Devon homeowners:

  • Off-gas-grid savings — many Devon homes rely on oil or LPG, where heat pumps deliver 40–70% savings on heating costs
  • Mild climate — higher heat pump efficiency means lower running costs compared to colder regions
  • Rural properties — larger gardens make ground source systems with horizontal collectors a cost-effective option
  • Coastal properties — water source heat pumps may be an option for properties near rivers or lakes

Our Devon Projects

  • St Margarets, Exeter — a hybrid heat pump system combining ground source technology with existing heating infrastructure
  • Seaborough Court, West Dorset — a nearby project demonstrating our experience with period properties in the South West
  • Lappa Valley, Cornwall — a visitor centre installation showcasing commercial-scale heat pump technology in the region

£7,500 Grant for Exeter Homeowners

The Boiler Upgrade Scheme provides a £7,500 grant towards any heat pump installation. As an MCS certified installer, we handle the entire application. Finance is available for the remaining balance.

Free Consultation in Exeter

Contact Thermal Earth for a free, no-obligation assessment of your Devon property.

Why Choose Thermal Earth in Devon?

Thermal Earth is one of the most experienced heat pump companies serving the South West:

  • 20+ years and 3,500+ installations across the UK, including projects in Exeter and Cornwall
  • Proven South West track record — installations at St Margarets Exeter, Seaborough Court Dorset, Jubilee Pool Penzance, and Lappa Valley Cornwall
  • Own borehole drilling team — three specialist rigs for ground source installations
  • MCS certified for the £7,500 BUS grant
  • MasterTherm heat pumps with top efficiency ratings
  • Comfort Care and remote monitoring for ongoing support

Areas We Cover in Devon

We serve Exeter city, Topsham, Exmouth, Sidmouth, Honiton, Tiverton, Crediton, Okehampton, Tavistock, Newton Abbot, Torquay, Totnes, Dartmouth, and rural areas across East and Mid Devon. We also work across the Devon–Dorset–Somerset borders and into Cornwall.

Frequently Asked Questions

How much does a heat pump cost in Devon?

Air source installations cost £8,000 to £18,000, and ground source £18,000 to £45,000 before the grant. After the £7,500 BUS grant, costs start from around £500 for a well-matched property. Devon properties with larger gardens can often use horizontal ground collectors, which are more affordable than boreholes.

Are heat pumps efficient in Devon’s climate?

Devon’s mild South West climate is excellent for heat pumps. The maritime influence keeps winter temperatures moderate, which means both air source and ground source heat pumps operate at high efficiency year-round. Air source systems in Devon typically achieve seasonal COPs of 3.0–3.5, and ground source systems reach 4.0–5.0 — among the best conditions in England.

My home is off the gas grid — what savings can I expect?

Many Devon properties are off-grid. Switching from oil to a heat pump typically saves 40–60% on heating costs, and from LPG 50–70%. Combined with the £7,500 grant, the financial case is very strong. For an estimate specific to your property, contact us for a free consultation.

What is the Boiler Upgrade Scheme?

The BUS provides £7,500 towards any heat pump installation for homeowners in England. No income test, extended to 2030. We handle the full application as your MCS certified installer — the grant comes off your invoice directly.

How long does installation take?

Air source: 2–3 days. Ground source: 3–5 days indoor works plus 1–3 days for drilling. We coordinate logistics carefully for Devon installations and restore all garden areas after completion.

Can I keep my existing radiators?

Many existing radiators work fine with heat pumps. Because heat pumps run at lower temperatures, we assess each radiator during our heat loss survey. Larger radiators usually perform well. Some homes benefit from upgrading a few key radiators, but full replacement is rarely needed. Underfloor heating is the ideal pairing if you are renovating.