Design is what separates a comfortable, economical system from a disappointing one. Heat pumps run most efficiently at low flow temperatures, around 35–50°C, so the survey checks every room's heat loss against the radiator in it and sizes the unit to the whole house rather than to the old boiler's output. Weather compensation controls then adjust the water temperature to the weather outside, so the system runs gently for long periods instead of in short bursts.
Installers working in Oxfordshire plan the order of work so heating and hot water are off for as short a time as practical. For older properties in Oxfordshire, the heat loss calculation looks closely at solid walls, single glazing and draughts before any unit is sized. In Oxfordshire, cylinder space is planned with you, often in an airing cupboard, utility room or garage.
Who it suits
- Owners who want one contract covering design, fitting and paperwork
- Owners and landlords in England and Wales eligible for the Boiler Upgrade Scheme
- Households with room for a hot water cylinder
- Homes replacing a gas, oil, LPG or electric heating system
Grants and rules for heat pumps in England
In England the Boiler Upgrade Scheme gives £7,500 towards an air source heat pump (£9,000 if it replaces oil or LPG, from 21 July 2026 to 31 March 2027), and since 28 April 2026 a valid EPC is no longer needed. The grant is applied for by the MCS-certified installer and shown as a deduction on your quote.
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.
Air source heat pump installation prices in Oxfordshire
These are guide prices for Oxfordshire, 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.
| Home | Typical size | Installed guide price | After £7,500 grant |
|---|---|---|---|
| 1–2 bedroom flat or small terrace | 4–5 kW | £9,900–£13,000 | £2,400–£5,500 |
| 2–3 bedroom terrace or semi | 5–7 kW | £10,900–£14,050 | £3,400–£6,550 |
| 3 bedroom semi or small detached | 6–9 kW | £12,500–£16,100 | £5,000–£8,600 |
| 4 bedroom detached | 8–12 kW | £14,550–£18,700 | £7,050–£11,200 |
| 5+ bedroom or larger older house | 11–16 kW | £17,150–£23,400 | £9,650–£15,900 |
Installed, inc VAT: unit, cylinder, controls, minor pipework and commissioning.
Towns we cover in Oxfordshire
We cover 11 towns in Oxfordshire for air source heat pump installation. Each links to local guide prices and the grant position for England.
| Town | Postcode district | Nearest town | Midwinter daylight |
|---|---|---|---|
| Oxford | OX1 | Abingdon | 7 h 47 min |
| Banbury | OX16 | Brackley | 7 h 44 min |
| Abingdon | OX14 | Didcot | 7 h 48 min |
| Bicester | OX26 | Oxford | 7 h 45 min |
| Didcot | OX11 | Abingdon | 7 h 48 min |
| Witney | OX28 | Oxford | 7 h 47 min |
| Chipping Norton | OX7 | Stow-on-the-Wold | 7 h 45 min |
| Henley-on-Thames | RG9 | Marlow | 7 h 49 min |
| Thame | OX9 | Princes Risborough | 7 h 47 min |
| Wallingford | OX10 | Didcot | 7 h 49 min |
| Wantage | OX12 | Didcot | 7 h 49 min |
Air source heat pump installation questions
Do I need new radiators for a heat pump?
Not always; many homes keep most of their radiators and change only a few. Because a heat pump runs at a lower water temperature than a boiler, each radiator gives out less heat, so the survey checks every room against its heat loss. Rooms where the existing radiator falls short get a larger one, with a guide price of £250–£450 each, installed and including VAT.
Will an air source heat pump be noisy?
Heat pumps are designed to run quietly, but where the unit sits makes a real difference. The survey looks for a position away from bedroom windows and neighbours, with clear airflow, and the installation must pass the MCS noise assessment. The fan is most noticeable on very cold days when the unit works hardest, and a little vapour during the periodic defrost is normal.
What grants can I get for a heat pump?
It depends on where you live. In England and Wales the Boiler Upgrade Scheme gives £7,500 towards an air-to-water heat pump, which the installer claims and deducts from your quote. In Scotland, Home Energy Scotland offers a grant of up to £7,500, with up to £1,500 more for eligible rural and island homes, but you need a written funding offer before work starts. Northern Ireland has no dedicated homeowner heat pump grant at present.
Can I cancel after accepting the quote?
Nothing is ordered until you accept the written quote. Where the contract is agreed away from our premises, for example at your kitchen table, you can cancel within 14 days under the Consumer Contracts Regulations 2013. If you ask us to start sooner and then cancel, you pay only for work done up to that point.