East Sussex · Air conditioning installation
Air conditioning installation in Wilmington, East Sussex
Looking for air conditioning in Wilmington? We look at the job first, give you a fixed-price quote and do the work at a time that suits you, finishing with proper records.
- An ageing air conditioning system near the end of its life
- Fans and portables that don’t keep up
- Rooms under the roof that stay hot into the night
Air conditioning installation in Wilmington
A single-room split system is typically £1,200–£2,200 + VAT, while a two-room multi-split is typically £2,800–£4,500 + VAT and three to five rooms £4,500–£8,500 + VAT. Supply, installation, commissioning and F-Gas documentation are all included, with commercial and VRF systems priced after a survey. Most split systems we fit in Wilmington are reversible: in heating mode they work as an air-to-air heat pump, so a system bought for summer earns its keep in winter too.
Villages like Wilmington often have older houses and cottages, some of them listed. That matters, because a listed home needs consent and permitted development rules don’t apply to it, and the outdoor unit position is chosen to suit the building.
We’re an F-Gas certified company, NICEIC approved for electrical work, MCS certified for heat pumps and a Checkatrade member. Our engineers hold the F-gas qualifications needed to work on refrigerant.
- Place
- Wilmington (BN26)
- Wider area
- East Sussex
- Prices
- Single room from £1,200 + VAT
- Response
- On the working day you ask
- Price
- Fixed, in writing
- Accreditations
- NICEIC and F-Gas
- Call
- 07833 053749
- Page updated
- 30 October 2026
Common questions in Wilmington
Will air conditioning in Wilmington need planning permission?
It depends on the property. Central Wilmington is a short walk from the Wilmington Conservation Area. An air-to-air system used for heating as well as cooling can be permitted development on a house if it meets the conditions, but a cooling-only unit is not covered, listed buildings need consent and conservation areas restrict outdoor units facing a road. Where necessary, we check with the planning department at Wealden council, typically the authority for Wilmington.
Will you come out to Wilmington?
We do. Villages and hamlets get the same service as the bigger towns. Visits to smaller places are planned so the engineer arrives with what the job needs.
Can I have air conditioning in a flat?
It depends on the building and the lease. An outdoor unit can sometimes go on a balcony, roof or rear wall, with consent, and we check the options on the survey. This is general information, not legal advice.
Whose job is it to check the system for leaks?
Responsibility is shared between the operator, typically 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 every 12 months from 5 tCO2e, and every 6 months from 50 tCO2e.
Do I get paperwork after the visit?
Yes. It’s the record a manufacturer or the next engineer will ask to see: a dated note of the work, with refrigerant details where they apply.
Can I fit air conditioning or a heat pump myself?
Not the refrigerant work. The F-gas rules require certified companies and qualified engineers for it, and a new circuit is notifiable under Part P unless a registered electrician, such as a NICEIC approved contractor, does it.
What warranty do I get?
It’s the manufacturer’s warranty, which varies by brand. For example, Daikin’s standard warranty on split air conditioning is 2 years and we explain the terms for your brand on the quote.
What an install looks like in Wilmington
About 45% of homes across Wilmington and its surrounding area date from 1945 to 1972, according to the Valuation Office Agency’s council tax figures, and about 70% of households live in detached or semi-detached houses, according to the 2021 Census. Homes of that age usually have cavity or solid brick walls, and we check which before planning the pipe route. Detached and semi-detached houses normally have space for the outdoor unit, and several rooms can share one on a multi-split.
About 1.9 miles south-west stands Alfriston Clergy House. Listed homes in any area need consent first, so tell us if yours is one.
Wilmington is about 4 miles south-west of Hailsham, in East Sussex. Homes and businesses alike in Wilmington, we can help with air conditioning. You will hear back from us the same working day, and there’s a 24/7 emergency line. Our area takes in 289 places across East Sussex.
The closest recent job we can point to from Wilmington was on South Road, Hailsham (BN27), about 4 miles north-east: installing individual wall-mounted units in 12 resident bedrooms, two communal lounges and the dining room: 15 units in total served by three outdoor units. See the job
All of BN26 is covered, from the main roads to the quietest streets. From The Street and Ades Field to the smaller roads in between, the whole area is covered. Close to Wilmington, our area also takes in Milton Street (1 mile south-west), Winton (2 miles west), Arlington (2 miles north), Berwick (2 miles north-west) and Lullington (2 miles south-west). Larger places within reach include Eastbourne (5 miles south-east), Bexhill-on-Sea (12 miles east), Seaford (5 miles south-west) and Lewes (9 miles north-west).
Local landmarks in Wilmington
Around Wilmington, our work takes us to homes and businesses near The Sussex Ox pub and the streets around them. Wilmington’s nearest station is Berwick (Sussex) station, roughly 1.8 miles north-west. A little further out are Agricultural Museum (under half a mile south) and Burlough Castle (1 mile west). For a walk, there’s Combe Hill.
What the work involves, system by system
Ceiling cassettes
A cassette needs a void above the ceiling for the unit, pipework and drain, and many use a built-in condensate pump to lift the water away. We check the ceiling void on the survey.
Ducted systems
With a ducted system, the indoor unit sits out of sight above the ceiling, with only neat grilles showing in the room. It’s popular where people do not want a unit on the wall.
Nearby places to Wilmington
Other services in Wilmington
What happens on the day
You do not need to do much on the day. Someone needs to let us in and show us the units, or where they’re going, and the rest is down to us. At the end, we tidy up and run through the work with you. A few photos help us make the most of a visit to Wilmington.
- You send pictures, or we visit and survey the rooms and outside.
- Output, positions and price are settled before anything is booked.
- On the day, dust sheets go down and the indoor and outdoor units are fitted.
- Connections are made, checked for leaks and pulled down to a vacuum.
- The system is commissioned, the controls explained and the F-Gas records handed over.
How to prepare
- Give us access to the outside wall, roof or yard where the outdoor unit sits
- Clear access to the fuse board
- Clear the space around the indoor unit, or where it will go
Ask for a quote
Some jobs can be priced from photos, while others need a survey. Multi-room systems, commercial buildings and anything with a long or hidden pipe route are normally surveyed first. Either way, you get a fixed price before any work is booked.
Advice
Do you need air conditioning in Wilmington?
Most overheating comes from heat gained through the day. Sun through large windows, roof lights and glazed doors is the biggest source in many rooms, and once the room has warmed up, it holds on to it into the evening.
Keep an eye out for any of the following:
- Expensive direct electric heating
- Rooms that get too hot to sleep or work in
- Fans and portables that do not keep up
Older streets near St Mary and St Peter's Church may fall within a conservation area, so we check the planning position before choosing where the outdoor unit goes.
Comparing quotes
- Which brand and model they’re proposing, and why
- What paperwork you’ll receive afterwards
- Proof of F-Gas company certification
Why deal with it now?
Refrigerant rules have changed what new systems use. Since 2025, new single split systems with less than 3 kg of refrigerant cannot use F gases with a GWP above 750, which is why R32, with a GWP of 675, is now common. Older R410A systems have a GWP of 2088. Getting the date in early helps for a place like Wilmington.
The pipe route, the height of the units and how we reach them all affect the cost. We take each of them into account, and the price is fixed before any work starts.
Why book with us
- Listed on Checkatrade
- Leading brands including Daikin, Mitsubishi Electric and Fujitsu
- A site survey and a fixed-price quote
- One contact for properties across the South East and London
From one of our customers
“Excellent service from start to finish. Two wall-mounted units installed in our home. Clean, tidy work: they protected all the floors and left no mess. The systems work brilliantly. Would highly recommend.”
Sarah M., East Grinstead