A hybrid heat pump is an air-to-water heat pump installed alongside an existing gas, LPG or oil boiler, with a controller that decides which one supplies heat at any moment. Typically the heat pump covers mild and moderate weather, and the boiler takes over or helps on the coldest days, or whenever it is cheaper to run on the prices entered into the controller.
In Cornwall, the outdoor unit of a hybrid needs the same airflow and siting care as any heat pump. Combi homes in Cornwall with no space for a cylinder can look at a hybrid that keeps the combi for hot water. A survey in Cornwall can set a hybrid against a full heat pump for owners anywhere in Cornwall.
Who it suits
- Combi homes with no room for a cylinder
- Owners who want a stepping stone towards a full heat pump later
- Homes with a fairly new boiler the owner wants to keep using
- Large or hard-to-insulate homes where a full heat pump is difficult for now
Grants and rules for heat pumps in England
Homes in Cornwall can use the Boiler Upgrade Scheme, which takes £7,500 off the cost of an air source heat pump when it replaces fossil-fuel or electric heating. Replacing oil or LPG heating qualifies for £9,000 for installations from 21 July 2026 to 31 March 2027, and air-to-air systems for £2,500. The MCS-certified installer named in your quote applies for the grant and deducts it from the price.
There is no VAT on installing a heat pump anywhere in the UK until 31 March 2027. In England most houses can have an air source heat pump under permitted development, provided the unit meets the MCS noise and siting standards; the old 1 m boundary limit was removed on 29 May 2025. We flag listed buildings, flats and sensitive conservation-area positions at survey.
Hybrid heat pumps prices in Cornwall
These are guide prices for Cornwall, installed and including VAT. Your final price is fixed in a written quote after the survey and depends on the heat loss of the house, the radiators that need changing and where the unit goes.
| System | Installed guide price |
|---|---|
| Hybrid heat pump alongside an existing boiler | £7,200–£11,350 |
Installed, inc VAT. Hybrid systems are not eligible for the Boiler Upgrade Scheme.
Towns we cover in Cornwall
We cover 15 towns in Cornwall for hybrid heat pumps. Each links to local guide prices and the grant position for England.
| Town | Postcode district | Nearest town | Midwinter daylight |
|---|---|---|---|
| Redruth | TR16 | Camborne | 8 h 02 min |
| Falmouth | TR11 | Truro | 8 h 03 min |
| St Austell | PL25 | Bodmin | 8 h 01 min |
| Truro | TR1 | Falmouth | 8 h 02 min |
| Camborne | TR14 | Redruth | 8 h 02 min |
| Newquay | TR7 | Truro | 8 h 00 min |
| Penzance | TR18 | Hayle | 8 h 03 min |
| Bodmin | PL31 | Wadebridge | 8 h 00 min |
| Saltash | PL12 | Plymouth | 8 h 00 min |
| Bude | EX23 | Launceston | 7 h 56 min |
| Hayle | TR27 | Camborne | 8 h 02 min |
| Helston | TR13 | Camborne | 8 h 03 min |
| Launceston | PL15 | Liskeard | 7 h 58 min |
| Liskeard | PL14 | Saltash | 8 h 00 min |
| Wadebridge | PL27 | Bodmin | 7 h 59 min |
Hybrid heat pumps questions
Will a hybrid heat pump lower my bills?
It can reduce how much gas, LPG or oil you burn, but the effect depends on how the controller is set, your insulation, your tariff and fuel prices. You keep a boiler to service and, on mains gas, the standing charge. We do not promise a figure; instead the survey gives an estimate for your home comparing a hybrid with a full heat pump.
Is a hybrid a good step towards a full heat pump?
It can be, if the outdoor unit and pipework are sized with a future full system in mind. Later, once insulation has improved or radiators have been upgraded, the boiler can be removed and the system converted, provided the heat pump is large enough for the full load. Raise this at survey so the design leaves room to change.
Does a hybrid switch between heat sources automatically?
Yes. The hybrid controller follows rules set at commissioning: it might switch to the boiler below a chosen outdoor temperature, compare running costs using the prices you enter, or prioritise lower carbon. Some systems run both together in very cold weather. The installer sets these for your home and shows you how to adjust them when tariffs change.
Can I get the Boiler Upgrade Scheme grant for a hybrid heat pump?
No. In England and Wales hybrid systems are not eligible for the Boiler Upgrade Scheme, because the scheme requires the heat pump to meet the home's full heating and hot water needs on its own. If a grant matters to your budget, a full air-to-water heat pump is the option that can qualify. In Scotland and Northern Ireland we check at survey what, if any, funding applies.