Surrey · Heat pump installation
Air Source Heat Pumps in Merrow
Heat pump installation, in Merrow and nearby. Call for a fixed-price quote, and we’ll reply the same working day.
- Checking eligibility for a heat pump grant
- A boiler that is getting old
- Plans to switch to electric heating with a heat pump
Air source heat pumps for homes and businesses in Merrow
An air-to-water heat pump costs £8,000–£16,000 (0% VAT on homes), before the grant. The Boiler Upgrade Scheme can provide £7,500 towards an eligible air-to-water system in England and Wales and the installer makes the application. Not every home qualifies, so we check eligibility before you commit. The work covers radiator systems, hot water cylinders and homes heated by oil, LPG or gas, and the jobs we see most are questions about listed buildings or conservation areas and moving away from fossil-fuel heating.
If your home near Merrow has no mains gas, the grant can be bigger. Until March 2027, homes on oil or LPG without mains gas can get an extra £1,500 through the Boiler Upgrade Scheme, for an air source or ground source heat pump.
Nothing is signed off by word of mouth: commissioning details for an installation, a fault and repair note for a repair, or a record of the service. Keep it with the system’s paperwork so it’s to hand next time.
- Place
- Merrow (GU1, GU4)
- Wider area
- Surrey
- Pricing
- Fixed-price quote after a site survey
- Approvals
- NICEIC and F-Gas, MCS
- Prices
- £8,000–£16,000 before the grant, 0% VAT on homes
- Phone
- 07833 053749
- Reviewed
- 30 October 2026
What affects the quote in Merrow
Some jobs are bigger than they look, and some smaller. The main factors:
- Whether it’s a simple split or a larger system
- Access, including height, roofs and ladders
- How many units are involved
Leaving a fault or an overdue service rarely makes the work cheaper. Small problems, from blocked filters to slow leaks, tend to get worse, and a system working harder than it should costs more to run. If you are unsure, phone us on 07833 053749 or drop us a line and we’ll give you an honest view and a fixed price.
Before you get in touch
There’s no need for technical detail. Just send:
- Any previous service or F-Gas records
- Photos showing the indoor unit and the space around it
- The outside wall, roof or yard where the outdoor unit sits or would go
Photos are the fastest route to a quote: the inside and outside of the property where the work is, plus the rating plate of any unit already there. Tell us the address and what you need, and many jobs can be priced from that.
Homes in Merrow and heat pumps
Census 2021 figures found about 66% of households in detached or semi-detached houses. Houses normally have space for an outdoor unit and a hot water cylinder.
If your home is one of the older properties near Church of St John the Evangelist, the survey checks whether it’s listed or in a conservation area before the outdoor unit position is chosen. Clandon Park lies about 0.9 miles east. Owners of listed homes need consent before a heat pump is fitted, so it’s one of our first questions.
Merrow is about 2 miles east of Guildford, in Surrey. We cover Merrow for air source heat pumps and across the rest of Surrey. We cover 395 places across Surrey, large and small.
The closest recent job we can point to from Merrow was on Stoughton Road, Guildford (GU2), about 2 miles west: installing a Mitsubishi Electric wall-mounted unit in the living room and a second unit in the master bedroom.
Work in GU1 and GU4 follows the same survey, fixed-price quote and written records as everywhere else we cover. Park Lane, Grove Road and Wykeham Road and the roads off them are all inside our area. We also cover Burpham (1 mile north-west), Abbotswood (1 mile west), West Clandon (2 miles north-east), Guildford (2 miles west) and Chilworth (2 miles south). We also work in nearby towns such as Woking (5 miles north), Camberley (11 miles north-west), Epsom (13 miles north-east) and Farnham (12 miles west).
Near you in Merrow
Typical jobs here are in properties near St Peter's Catholic School, St Peter's Catholic School and Riverside Park. The nearest railway station is Clandon station, about 1.6 miles north-east. Nearby you’ll also find Guildford Castle (2.1 miles south-west) and Surrey Infantry Museum (0.6 miles north-east). Not far away are St Martha's Hill and Colyer's Hanger and Silent Pool.
Managing agents and facilities teams in Merrow
Under the GB F-gas rules, responsibility for leak checks is shared between whoever operates the equipment and the engineers who work on it. Where a building is let or managed, the lease or contract should make clear who looks after the system and we’re happy to deal with whoever it is.
Bigger systems bring extra duties: systems with an effective rated output over 12 kW need a TM44 inspection by an accredited energy assessor at least every 5 years. We arrange the inspection, get the system ready and put right anything it picks up.
Merrow questions
Is planning permission needed for a heat pump in Merrow?
That depends on the building and where the outdoor unit goes. Around 15 listed entries sit within 0.5 miles of central Merrow. A heat pump on a house can be permitted development if it meets the conditions, including the MCS noise check, but not within the grounds of a listed building, and in a conservation area the outdoor unit can’t face a road. Where needed, we check with Guildford council, which is usually the planning authority for Merrow.
Will you come out to Merrow?
Yes. Merrow 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.
Do I need to service the system to keep the warranty?
Check the manufacturer’s terms. Some warranty terms require the system to be serviced regularly by a qualified engineer, so check the terms or ask us. Keep every service record either way.
Do I get paperwork after the visit?
Yes. Each visit is written up, and any work on the refrigerant circuit goes in the F-Gas records. File them with the system’s paperwork.
Can we book visits on a schedule?
Yes. Send details of the systems and how they’re used, and we will suggest a schedule with a fixed price. Leak checks required by the F-gas rules can be built in for larger systems.
Do I need new radiators for a heat pump?
We find out during the survey. Rooms where the radiator is big enough stay as they are and any changes are in the quote.
Who is responsible for leak checks?
Responsibility is shared between the operator, usually whoever owns or controls the equipment, and the service technicians. How often depends on the size of the refrigerant charge in tonnes of CO2 equivalent: at least yearly for 5 to under 50 tCO2e, and every 6 months for 50 to under 500 tCO2e.
Nearby places to Merrow
Also in Merrow
System by system
Hot water cylinders
An air-to-water heat pump heats hot water through a cylinder. Space for the cylinder is part of the survey, especially if you have a combi boiler.
Outdoor unit position and planning
Flats have tighter limits, and an Article 4 direction can remove permitted development rights. Listed buildings also need separate consent and we check what applies to you.
The process
Protection comes first: dust sheets over floors and furniture near the work and nothing is moved without asking you. Then the electrics are made safe and the work begins. The work on site takes several days for an air-to-water system with a new cylinder, less for an air-to-air system, and we tidy up before we leave. Visits to a place like Merrow are planned ahead, so we arrive with what the job needs.
- We find out about your home and the heating you have now.
- We measure heat loss for every room.
- We design the system, check the radiators and cylinder and look at the outdoor unit position.
- A fixed-price quote explains the cost, the grant position and the VAT.
- Installation, commissioning and MCS registration complete the job.
How to prepare
- Let us know where the consumer unit is
- Tell us about parking and loading
- Mention any managing agent or landlord rules we need to follow
Get a fixed-price quote
If you need air source heat pumps in Merrow, give us a ring on 07833 053749 or write to us at info@aircondoctor.co.uk. Tell us what kind of property it is and what you’d like done, plus some photos if they’re to hand. We reply the same working day.
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A customer’s words
“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