West Sussex · Heat pump installation
Heat pump installers in Merston
One call covers MCS certified installation of air source heat pumps for heating and hot water, with the Boiler Upgrade Scheme grant applied for in Merston: diagnosis, fixed price, work and sign-off. F-Gas certified, NICEIC approved and Checkatrade members.
- Radiators that may be too small for a heat pump
- Planning and permitted development questions
- Moving away from fossil-fuel heating
Different systems, different jobs
Heat loss surveys
We look at walls, windows, floors, roofs and ventilation along with the room sizes.
The Boiler Upgrade Scheme
Eligibility depends on the property and the scheme rules and we confirm it before anything is agreed.
How we handle air source heat pumps in Merston
As an MCS certified installer, we fit air source heat pumps for homes in Merston and the rest of West Sussex. Air-to-water systems feed your radiators or underfloor heating and hot water cylinder, while air-to-air systems heat rooms directly through indoor units and can cool them too. We will explain which type fits your home and why. If you’re dealing with ageing boilers that will need replacing and working out whether radiators need upsizing, we can help.
In a place like Merston, some homes are listed, and permitted development doesn’t cover listed buildings, so we check consent first.
AirCon Doctor is an F-Gas certified company and NICEIC approved for electrical work, with MCS certification for heat pumps and Checkatrade membership. Our engineers hold the F-gas qualifications needed to work on refrigerant.
- Place
- Merston (PO20)
- Wider area
- West Sussex
- Price guide
- £8,000–£16,000 (0% VAT on homes), before the grant
- Approvals
- F-Gas certified company, NICEIC approved, MCS
- Price
- Fixed-price quote after a site survey
- Telephone
- 07833 053749
- Reviewed
- 30 October 2026
What we do, step by step
There’s very little for you to do on the day. Just let us in and point us to the units, or to where they’ll be fitted, and we take it from there. Before we leave, the area is tidied and we explain what we have done. We agree a date with you and plan the visit to Merston so we arrive with what’s needed.
- First we talk through the property and the current system.
- Every room’s heat loss is worked out on site.
- From those figures we size the heat pump and decide on radiators, cylinder and outdoor position.
- You get a fixed price, with any grant and the VAT set out.
- Installation, commissioning and MCS registration complete the job.
Getting ready for the visit
- Make sure we can reach the consumer unit or fuse board
- Keep pets and children away from the work area
- Dig out any previous service or F-Gas records
How to get a quote
To get a fixed-price quote, call 07833 053749 or write to us at info@aircondoctor.co.uk 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.
Advice
Nearby places to Merston
Other services in Merston
Aftercare tips
Once we’ve finished, these simple steps help:
- Let the heat pump run steadily, as set up at handover
- Store the MCS certificate and warranty documents together
- Keep up with insulation and draught-proofing
Once commissioned, we register the installation with MCS and give you the certificate. Keep it with the manufacturer’s paperwork for future reference.
Leave space around the outdoor unit. It needs good airflow to collect heat from outside, so keep it clear all year.
Safe owner checks
Never try to top up, release or handle refrigerant yourself. Under the F-gas rules, engineers need their own qualifications and the company must be certified, and refrigerant lines can cause cold burns. A suspected leak is our job, not yours.
Do not move, re-route or disconnect units or pipework yourself. Moving a unit involves the refrigerant circuit, so it needs an F-Gas qualified engineer, and the electrics need care too. Ask us to quote for a move instead.
Air source heat pumps in Merston: the local picture
VOA council tax data show about 34% of homes in Merston and the neighbourhoods around it were built in 2000 or later. Newer homes normally lose less heat, which tends to suit a heat pump well.
Older homes near Church of St Giles may need extra checks for planning and heat loss before a heat pump is designed. With Goodwood House about 3.5 miles north, it’s worth asking whether your own home is listed before planning a heat pump.
Merston is about 3 miles south-east of Chichester, in West Sussex. Whether you are in the middle of Merston or further out, we cover air source heat pumps, from small jobs to large ones. Merston is one of 371 towns, villages and districts in West Sussex where we work for homes and businesses. Our Worthing page covers places nearby, about 15 miles away.
Not far from Merston, a recent job of ours was on East Street, Chichester (PO19), about 3 miles north-west: installing a Daikin wall-mounted unit in the dining area and a second unit serving the kitchen pass area.
All of PO20 is within our area, from busy streets to back roads. Places around Merston that are also on our list: Runcton (1 mile south-west), Colworth (1 mile east), Oving (1 mile north), North Mundham (1 mile west) and Lagness (1 mile south). We also work in nearby towns such as Worthing (15 miles east), Bognor Regis (3 miles south-east), Chichester (3 miles north-west) and Selsey (6 miles south).
Around Merston
In Merston, that means homes and buildings near Chichester High School For Girls. The nearest railway station is Chichester station, about 2.3 miles west. Other landmarks nearby include The Chichester City Museum (2.3 miles north-west) and St Richard's Hospital (2.3 miles north-west).
Your questions about air source heat pumps in Merston
Will a heat pump in Merston need planning permission?
There’s no single answer: the building and the outdoor unit position decide it. The half-mile around the middle of Merston holds about 4 listed buildings and structures. Heat pumps on houses are often permitted development, but listed buildings need consent and conservation areas restrict outdoor units facing a road. Where it’s needed, we check with the local planning authority (for Merston, typically Chichester council).
Is Merston within the area you cover?
Yes, and the size of the place makes no difference to how we work. We’re based in East Grinstead and plan each visit so the job can be finished in one trip where possible.
What’s the price of a heat pump installation?
Air-to-water installations cost £8,000–£16,000 (0% VAT on homes), before the grant. Air-to-air prices are set after a survey, and we confirm the VAT on the quote.
Which brands do you work with?
We install and work on the leading makes, from Mitsubishi Electric, Daikin and Fujitsu to Panasonic, Toshiba, LG, Samsung, Mitsubishi Heavy Industries and Hitachi. Tell us the make and model and we will take it from there.
Should I choose air-to-water or air-to-air?
It depends on your home, your heating and whether you want cooling. Air-to-water can attract a £7,500 grant where eligible; air-to-air only qualifies for £2,500 under strict conditions, and we set out the options after the survey.
How do you keep the place clean during the work?
Floors and furniture near the work are covered with dust sheets before any work starts, and we tidy up as we go. Before we leave, we clear up and run through the work with you.
What does F-Gas certified mean?
F-Gas certification shows a company is approved to work on equipment containing fluorinated gases, such as the refrigerant in air conditioning and heat pumps. That isn’t optional: it’s required by law, and we hold it.
A customer’s words
“Office air con broke down in the July heatwave. Called at 8am, engineer was here by noon and fixed within 2 hours. Brilliant emergency response. They now hold the service contract for the whole building.”
James T., Crawley, office manager