Kent · Heat pump installation
Heat pump installation in Marden Thorn, Kent
Air source heat pumps, in Marden Thorn and nearby. Call for a fixed-price quote, and we will reply the same working day.
- Deciding on the outdoor unit position
- Questions about listed buildings or conservation areas
- Checking emitters for a heat pump
Air source heat pumps in Marden Thorn
Air-to-water heat pumps heat your hot water through a cylinder. If you have a combi boiler and no cylinder, the survey looks at where one could go. Air-to-air systems don’t heat hot water, so you’ll need another way to do that. The work covers air-to-air heat pumps, radiator systems and underfloor heating, and common reasons people get in touch are no space for a hot water cylinder and radiators that may be too small for a heat pump.
Homes around Marden Thorn normally have room outside for a heat pump, so the design comes down to heat loss, radiators and hot water.
Each manufacturer sets its own warranty period. Daikin, for instance, gives a standard 2 years on split air conditioning, with longer extensions only on its air-to-water heat pumps. Whatever the brand, the manufacturer’s terms are explained on your quote.
- Location
- Marden Thorn (TN12)
- Wider area
- Kent
- Credentials
- NICEIC and F-Gas, MCS
- Quotes
- Fixed after a survey or pictures
- Prices
- Air-to-water £8,000–£16,000 before any grant (0% VAT for homes)
- Call
- 07833 053749
- Last updated
- 30 October 2026
Looking after your system
Systems last better with the right care. Here’s what we suggest:
- Keep the MCS certificate with the manufacturer’s paperwork
- Check eligibility for the Boiler Upgrade Scheme early
- Let the heat pump run steadily, as set up at handover
Where we applied for a Boiler Upgrade Scheme grant, we keep you informed through the process, as the installer applies for it.
Leave space around the outdoor unit. It needs good airflow to collect heat from outside, so keep it clear all year.
When something else is needed
We won’t sell you work that does not address the problem, so here are the limits:
- Getting planning permission or listed building consent on your behalf
- Disconnecting or servicing a gas boiler
- A grant for a home that does not meet the scheme rules
If in doubt, call us on 07833 053749 or fill in the contact form and we’ll say what we think.
Parts of the system we cover
- Air-to-water heat pumps
- Hot water cylinders
- Underfloor heating
- Homes heated by oil, LPG or gas
- Radiator systems
- Air-to-air heat pumps
What we do, step by step
If the system has to be off for part of the visit, we tell you before we start so it does not catch you out. In a business, work can often be done one area at a time. The work takes a few days on site, depending on the cylinder, the radiators and the pipework involved. Seeing the property in pictures first means the trip to Marden Thorn can be planned properly.
- Step one is understanding the house, how it’s heated today and what you’d like to change.
- 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.
- You get a fixed-price quote, with any grant you are eligible for and the VAT explained.
- The outdoor unit, the indoor equipment and the controls are installed and connected.
- Commissioning, MCS certification and a handover of the controls finish the job.
Getting ready for the visit
- Tell us about access, such as roof hatches, high walls or locked plant areas
- Unlock any gate, garage or side passage we need
- Make sure we can reach the consumer unit or fuse board
Getting a quote
Our prices page gives typical ranges, but your quote is based on your job, because no two buildings, rooms or systems are the same. Once we’ve looked at the job, from pictures or on a survey, you get a fixed price. To get going, call 07833 053749, or email if that’s easier.
Advice
Air source heat pumps in Marden Thorn: the local picture
About 8 listed entries lie within half a mile of central Marden Thorn, Thorn Cottage (grade II) among them. 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 planning team at Maidstone council, which normally handles Marden Thorn where necessary. About 31% of homes across Marden Thorn and its surrounding area have been built since 2000, according to VOA council tax data, and the 2021 Census found about 74% of households in detached or semi-detached houses. Lower heat loss in recent homes often means a smaller heat pump and fewer radiator changes. Detached and semi-detached houses usually have room for the outdoor unit and a cylinder.
Sizing comes from the heat each room loses on a cold day, not from the size of the old boiler. Grant applications go through the MCS certified installer, so that part is handled for you.
Marden Thorn is about 7 miles south of Maidstone, in Kent. Marden Thorn gets the same approach as every job we take on: diagnosis first, a fixed price and proper paperwork when we have finished. Count every place we list in Kent and you reach 922, with Marden Thorn on the list. The nearest of our city pages is East Grinstead, around 23 miles from Marden Thorn.
From Pagehurst Road and Thorn Road to the smaller roads in between, the whole area is covered. Our working area takes in TN12 in full. If you’re just outside Marden Thorn, we cover Wanshurst Green (1 mile north), Staplehurst (2 miles east), St Ann's Green (2 miles north), Milebush (2 miles north) and Horden (2 miles south). Further out, we also cover Maidstone (7 miles north), Ashford (15 miles east), Royal Tunbridge Wells (11 miles west) and Tonbridge (11 miles west).
Near you in Marden Thorn
For rail, the closest station is Marden station, about 1.4 miles north-west of the centre. Nearby you’ll also find South East Romany Museum (0.9 miles north) and Sissinghurst Castle (4.2 miles south-east).
System by system
Hot water cylinders
An older cylinder may not suit a heat pump and we tell you if it needs replacing.
Outdoor unit position and planning
Permitted development conditions in England include an outdoor unit of no more than 1.5 m³ and must meet MCS 020(a) and not be used solely for cooling. It can’t be within the curtilage of a listed building.
Your questions about air source heat pumps in Marden Thorn
Does the Boiler Upgrade Scheme cover homes in Marden Thorn?
Yes, the scheme covers homes in England, including Marden Thorn, if they qualify. The grant is £7,500 for an air source (air-to-water) heat pump and £2,500 for an air-to-air system that replaces the existing fossil-fuel heating. We hold MCS certification, so the application is ours to make for you.
Is Marden Thorn within the area you cover?
Yes, and the size of the place makes no difference to how we work. Visits to smaller places are planned so the engineer arrives with what the job needs.
Do you work on systems someone else installed?
Yes. We work on systems fitted by other installers as well as our own from all the leading brands. Tell us the make and model and send any paperwork you have.
Whose job is it to check the system for leaks?
Whoever operates the equipment, together with the technicians who service it. Systems below 5 tCO2e fall outside the set leak check intervals, while larger ones need checks at least every 12 months, or every 6 months from 50 tCO2e. We can tell you which band your system falls into.
What accreditations do you have?
F-Gas company certification, NICEIC approval for electrical work and MCS certification for heat pumps, and we’re Checkatrade members. Engineers who handle refrigerant hold their own F-gas qualifications as well.
When will I hear back?
On the same working day you contact us. Then we agree a date that works for you, with a fixed price before work starts.
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.
Nearby places to Marden Thorn
Also in Marden Thorn
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