Surrey · Heat pump installation
Heat pump installation in South Merstham, Surrey
One call covers heat pump installation in South Merstham: diagnosis, fixed price, work and sign-off. An F-Gas certified company, NICEIC approved, on Checkatrade.
- Questions about listed buildings or conservation areas
- Not knowing whether a grant applies
- Wanting to stop using oil, LPG or gas for heating
Air source heat pumps in South Merstham
Air-to-water heat pumps heat your hot water through a cylinder. Homes with a combi boiler may not have a cylinder, so finding space for one is part of the survey. Air-to-air systems don’t heat hot water, so you will need another way to do that. Common call-outs are for planning and permitted development questions and finding a place for the outdoor unit, across homes heated by oil, LPG or gas, hot water cylinders and radiator systems.
If your home near South Merstham has no mains gas, the grant can be bigger. Homes heated by oil or LPG with no mains gas can get an extra £1,500 on the Boiler Upgrade Scheme until March 2027, for an air source or ground source heat pump.
Whatever the visit, you get a written record: commissioning details for an installation, a fault and repair note for a repair, or a record of the service. File it with the manual, because it helps with any later warranty question.
- Location
- South Merstham (RH1)
- Wider area
- Surrey
- Costs
- £8,000–£16,000 (0% VAT on homes), before the grant
- Price
- A fixed price before we start
- Accreditations
- F-Gas certified company, NICEIC approved, MCS
- Telephone
- 07833 053749
- Last updated
- 30 October 2026
Signs you need air source heat pumps in South Merstham
The Boiler Upgrade Scheme has made people ask whether their home could qualify. Whether you can get the grant depends on your home and the scheme conditions, so we check before you commit.
Keep an eye out for these signs:
- Checking eligibility for a heat pump grant
- Deciding on the outdoor unit position
- Moving away from fossil-fuel heating
If your home is near Merstham station and heated by a gas boiler, an air-to-water heat pump can replace it where the survey shows it suits.
What to look for in a quote
- Whether anyone has checked the property or the system first
- Whether testing, commissioning and paperwork are included
- Whether the quote is a fixed price
How it works
The work area is kept tidy throughout, with sheets down and mess cleared as we go. Any holes, fixings or cable routes are agreed with you before we drill. The visit takes several days for an air-to-water system with a new cylinder, less for an air-to-air system. A few pictures let us plan a visit to a place like South Merstham.
- It starts with a conversation about the home, the existing heating and your plans.
- On the visit we calculate what every room loses on a cold day, then check the radiators, room for a cylinder and outdoor unit options.
- The price comes back fixed and in writing, with the grant and VAT shown line by line.
- Fitting day: the outdoor unit is placed, the indoor side connected and the controls set up.
- We commission the heat pump, complete the MCS paperwork and talk you through the controls.
Preparing for the visit
- Let us know if the units are on a roof, a high wall or in a locked area
- Mention any managing agent or landlord rules we need to follow
- Have the make and model of any existing unit to hand
How to get a quote
Published ranges are a starting point; the quote is built on your property, because every property is different. Once we’ve looked at the job, from pictures or on a survey, you get a fixed price. To get going, phone us on 07833 053749 or write to us at info@aircondoctor.co.uk.
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Homes in South Merstham and heat pumps
About 62% of homes across South Merstham and its surrounding area date from 1945 to 1972, according to the Valuation Office Agency’s council tax figures. Homes of that age often have cavity walls that may or may not be insulated, which the survey checks.
Older homes near All Saints' may need extra checks for planning and heat loss before a heat pump is designed.
South Merstham is about 2 miles north-east of Redhill, in Surrey. If you need air source heat pumps in South Merstham, it’s easy to get a fixed-price quote: please ring us on 07833 053749 or use the quote form. Our area covers London and the South East, South Merstham included. Our area takes in 395 places across Surrey, large and small.
The closest recent job we can point to from South Merstham was on Frenches Road, Redhill (RH1), about 2 miles south-west: installing a Mitsubishi Electric wall-mounted unit in the open-plan living and kitchen area.
We cover every part of the RH1 postcode area and the roads nearby. We cover homes and businesses on Station Road South, London Road South and Station Road and nearby roads. Neighbouring places we cover include Merstham (1 mile north), Holmethorpe (1 mile south-west), Gatton (1 mile west), Nutfield (2 miles south-east) and Redhill (2 miles south-west). Further out, we also cover Epsom (7 miles north-west), Horley (6 miles south), Ewell (8 miles north-west) and Reigate (3 miles south-west).
Near you in South Merstham
We fit and service air conditioning in homes and premises around Merstham Park School, Nutfield Marshes and East Surrey College, among other places. South Merstham has its own railway station: Merstham station. Other landmarks nearby include Bletchingley Castle (2.3 miles south-east) and The Belfry (1.7 miles south-west). For a walk, there’s Colley Hill and Mercers Lake.
Also near South Merstham
More services for South Merstham
What happens if it’s left?
From 1 April 2027, VAT on heat pumps in homes rises from 0% to 5%. It’s a date to bear in mind when planning, though the right time also depends on your home and heating. Dealing with it now is normally simpler than a breakdown later.
What you pay reflects the actual work. That’s why every job is looked at first, and why the quote is fixed before any work starts.
What you get with us
- Diagnosis first, then a fixed price
- We reply to enquiries the same working day
- Checkatrade member
- Leading brands including Daikin, Mitsubishi Electric and Fujitsu
Take a look at our cost guide or how to check a contractor.
System by system
Heat loss surveys
The survey covers the building fabric and how air moves through it along with the room sizes.
The Boiler Upgrade Scheme
Eligibility depends on the property and the scheme rules, so we check before you commit.
Questions from South Merstham
Is the heat pump grant available in South Merstham?
Yes, the scheme covers homes in England, including South Merstham, if they qualify. Whether your home qualifies, and for how much, depends on the type of heat pump and the heating it replaces. The installer applies, and we’re MCS certified.
Do I need planning permission for a heat pump in South Merstham?
It depends on the property. Central South Merstham is a short walk from the Merstham Village Conservation Area. The permitted development rules for heat pumps leave out listed buildings and stop outdoor units going on road-facing walls or roofs in conservation areas. Anything outside the rules needs an application, and we raise it with the planning department at Reigate and Banstead council, usually the authority for South Merstham first.
Can I do any of the installation myself?
No, not the refrigerant side. The F-gas rules require certified companies and qualified engineers for it, and a new electrical circuit is notifiable building work unless a registered competent person does it.
Which accreditations do you hold?
AirCon Doctor is an F-Gas certified company, NICEIC approved for electrical work and MCS certified for heat pumps. We are members of Checkatrade too.
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.
Is there a survey before the work?
Yes, every time. Diagnosis comes before treatment: the survey tells us what the job needs and how to do it, and the quote is based on that.
Can you come out in an emergency?
Yes. Our emergency line runs 24/7 for problems that cannot wait for a planned visit. Call 07833 053749 and tell us what’s happened.
From one of our customers
“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