It is important to be clear about funding. In England and Wales, hybrid systems are not eligible for the Boiler Upgrade Scheme, which requires the heat pump to meet the home's full heating and hot water needs. You also keep a fossil-fuel boiler, its servicing and, on mains gas, the standing charge. We set out both options at survey so you can compare a hybrid with a full heat pump fairly.
Combi homes in Northamptonshire with no space for a cylinder can look at a hybrid that keeps the combi for hot water. Installers covering Northamptonshire set up the hybrid controller so you can see and adjust when each heat source runs. For Northamptonshire homes with a boiler that is still fairly new, a hybrid lets a heat pump take on much of the heating now.
Who it suits
- Combi homes with no room for a cylinder
- 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
- Owners who want a stepping stone towards a full heat pump later
Grants and rules for heat pumps in England
Homes in Northamptonshire 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 Northamptonshire
These are guide prices for Northamptonshire, 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 | £7,000–£11,000 |
Installed, inc VAT. Hybrid systems are not eligible for the Boiler Upgrade Scheme.
Towns we cover in Northamptonshire
We cover 10 towns in Northamptonshire for hybrid heat pumps. Each links to local guide prices and the grant position for England.
| Town | Postcode district | Nearest town | Midwinter daylight |
|---|---|---|---|
| Northampton | NN1 | Wellingborough | 7 h 42 min |
| Corby | NN17 | Desborough | 7 h 39 min |
| Kettering | NN16 | Desborough | 7 h 40 min |
| Wellingborough | NN8 | Rushden | 7 h 41 min |
| Rushden | NN10 | Wellingborough | 7 h 41 min |
| Daventry | NN11 | Towcester | 7 h 42 min |
| Brackley | NN13 | Towcester | 7 h 44 min |
| Desborough | LE16 | Kettering | 7 h 40 min |
| Oundle | PE8 | Corby | 7 h 39 min |
| Towcester | NN12 | Northampton | 7 h 43 min |
Hybrid heat pumps questions
Do I still need to service my boiler with a hybrid?
Yes. The boiler still needs its annual service, by a registered gas engineer for gas or LPG or an oil technician for oil, and the heat pump needs its own annual service, which is often a condition of the manufacturer's warranty. Two heat sources mean slightly more maintenance than either a boiler or a heat pump on its own.
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.
Can a hybrid work with my combi boiler?
Yes, some hybrids are designed to work with a combi, with the heat pump heating the radiators and the combi continuing to provide hot water on demand. That avoids finding space for a cylinder, which is one of the main reasons people choose a hybrid. Other hybrid designs use a cylinder heated by the heat pump, with the boiler as backup.
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.