Oxfordshire · Heat pump installation
Heat pump installation in Merton, Oxfordshire
Expert air source heat pumps for Merton: a survey or diagnosis, a fixed price, careful work and proper paperwork. Call for a fixed-price quote.
- Planning and permitted development questions
- Questions about where the outdoor unit can go
- An oil, LPG or gas boiler near the end of its life
Air source heat pumps in Merton, done properly
A heat pump takes heat from the outside air and moves it into your home, using electricity to drive the process. It works on the same principle as air conditioning, run the other way, and air-to-air heat pumps are sometimes simply called air conditioning. If you are dealing with wanting to stop using oil, LPG or gas for heating and ageing boilers that will need replacing, we can help.
Space for an outdoor unit is rarely an issue near Merton, so the design focuses on heat loss and radiators.
Think of the paperwork as the system’s health record: a dated account of the work and the readings we took. If anything goes wrong later, it helps the next engineer and the manufacturer and it’s worth keeping safe.
- Where
- Merton (OX25)
- Region
- Oxfordshire
- Credentials
- F-Gas certified company, NICEIC approved, MCS
- Prices
- Air-to-water £8,000–£16,000 before any grant (0% VAT for homes)
- Pricing
- A fixed-price quote up front
- Call
- 07833 053749
- Last updated
- 30 October 2026
What we do, step by step
Each visit follows the same order: agree the plan on site, put the dust sheets down, carry out the job, test what we have done and explain it all to you. The visit itself takes from a couple of days to around a week, depending on the system and how much of the heating changes. Photos of the existing unit help with repairs and servicing in Merton.
- First we find out about the property, the heating you have now and what you’re hoping for.
- A heat loss survey works out how much heat each room needs, and we look at the radiators, the cylinder space and where the outdoor unit could go.
- We send a fixed-price quote that shows the equipment, the grant position and the VAT.
- Fitting day: the outdoor unit is placed, the indoor side connected and the controls set up.
- The system is commissioned and registered under MCS, and we show you how to use it.
Getting ready for the visit
- Name a contact who can meet us at the agreed time
- Let us know if the building has a permit or sign-in process
- Dig out any previous service or F-Gas records
How to get a quote
To get a fixed-price quote, ring us on 07833 053749 or send an email with the address and a few details about the rooms or units involved. Photos help a lot. We reply to enquiries the same working day.
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Common questions in Merton
Is Merton within the area you cover?
Yes. Merton is within the area we cover across London and the South East. Visits to smaller places are planned so the engineer arrives with what the job needs.
Is the heat pump grant available in Merton?
Merton is covered, as the scheme runs across England and Wales. The amount depends on the type of heat pump, and the survey confirms which applies. The installer applies, and we are MCS certified.
Will I get records for the system?
Yes, always. New installations come with commissioning details, F-Gas records and warranty information, while repairs and services get a written note of what was found and done.
Do you offer emergency call-outs?
Yes. Our emergency line runs 24/7 for problems that can’t wait for a planned visit. Call 07833 053749 and tell us what’s happened.
Is a heat pump permitted development?
Under the Planning Portal rules, a heat pump on a house can often be permitted development. Listed buildings are excluded, and listed building consent is separate, so we check for your property.
Can you set up regular servicing?
Yes. Maintenance contracts are part of what we do, set at the interval the system and the manufacturer’s terms need. Each visit is recorded and F-Gas records kept where they apply.
Is there a survey before the work?
Yes, always. Diagnosis comes before treatment: the survey tells us what the job needs and how to do it, and the quote is based on that.
More services for Merton
Before you call an engineer
Before you call us about a fault, a few checks can save a visit: check the mode, the set temperature, the remote’s batteries and the breaker. If a breaker trips again after you reset it, leave it off and phone 07833 053749 or email us.
Keep a note of anything odd: an error code, a new noise, a drip, a smell or a change in how well the system heats or cools. It helps us diagnose quickly, and a photo of the display helps even more.
What we are called out for in Merton
An ageing boiler is often the moment people start thinking about a heat pump. Planning the change before the boiler fails gives you time to survey, design and apply for any grant instead of making a rushed decision when the heating stops.
Look out for any of the following:
- Choosing between air-to-water and air-to-air
- Checking whether planning permission is needed
- A boiler that’s getting old
Boarstall Tower, roughly 3.7 miles south-east, is a reminder to check your home’s listing status: permitted development does not cover listed buildings.
What your quote should include
- Why the equipment they’re quoting suits the job
- If the figure could change on the day
- Which VAT rate the quote uses, and why
Heat pumps in Merton: local notes
On the National Heritage List, around 8 entries fall within 0.5 miles of the middle of Merton; Church of St Swithin (grade I) is one. For a heat pump, permitted development does not apply within the grounds of a listed building, and in a conservation area the outdoor unit cannot go on a wall or roof facing a road, so we check with the local planning authority (usually Cherwell council) where necessary. Valuation Office Agency council tax records show about 44% of homes in Merton and the neighbourhoods around it were built in 2000 or later, and about 76% of households live in detached or semi-detached houses, according to the 2021 Census. Newer homes usually lose less heat, which tends to suit a heat pump well. Houses typically have space for an outdoor unit and a hot water cylinder.
Live in one of the older houses around Church of St Swithin? Expect the survey to look closely at heat loss and at the building’s planning status.
Merton is about 3 miles south of Bicester, in Oxfordshire. Our engineers cover Merton for air source heat pumps, along with the rest of Oxfordshire. Count every place we list in Oxfordshire and you reach 443, with Merton on the list. You can also see our page for Guildford, roughly 49 miles from Merton.
If your postcode is in OX25, you are inside the area we cover. Places around Merton that are also on our list: Fencott (1 mile south), Murcott (1 mile south-east), Charlton-on-Otmoor (1 mile south-west), Wendlebury (2 miles north-west) and Lower Arncott (2 miles east). Larger places within reach include Oxford (8 miles south), Bicester (3 miles north), Abingdon-on-Thames (13 miles south) and Witney (15 miles west).
Around Merton
Around Merton, our work takes us to homes and businesses near The Old Plough pub, among other places. Merton’s nearest station is Bicester Village station, about 2.7 miles north of the centre. Other landmarks nearby include Bicester Community Hospital (2.9 miles north) and Bicester Avenue (2.3 miles north). The countryside around Merton includes Graven Hill and Woodsides Meadow.
What happens if it’s left?
Radiators that are too small for a heat pump’s lower flow temperature leave rooms cool. The survey picks this up before installation. Getting the date in early helps for a place like Merton.
Our prices page shows typical ranges, but your price depends on the job in front of us. For a fixed-price quote, ring 07833 053749, or email if that’s easier, and we’ll explain what it covers.
Why book with us
- A 24/7 emergency line
- NICEIC approved for electrical work
- Manufacturer’s warranty terms explained on your quote
- Members of Checkatrade
See our cost guide and how to check a contractor.
What a customer said
“Very professional from the initial survey through to installation. The engineer explained everything clearly and the quote was exactly what we paid. Would not hesitate to recommend AirCon Doctor.”
David W., Haywards Heath