Single-room air conditioning
A wall-mounted split system for a bedroom, living room or home office — usually fitted in a day.
Get a single-room quote →Local F-Gas certified installers · Covering Hounslow & nearby
Air Conditioning Hounslow: home air con installed, repaired and serviced
Hounslow Air Conditioning helps homeowners across Hounslow (TW3, TW4 and TW5) and nearby areas get air conditioning installed, repaired and serviced by local F-Gas certified installers. Every installation starts with a free home survey and a fixed-price written quote.
- Free, no-obligation survey
- Fixed written price
- All major brands repaired
Get a fixed-price quote
Email us and we'll put you in touch with a local F-Gas certified installer for a free home survey. It helps to include:
- Your postcode
- New air con, a repair or a service
- How many rooms, and your type of home
No obligation. Or write to info@hounslowairconditioning.co.uk
- F-Gas certifiedWe only refer certified installers
- Free home surveyEvery room measured before you're quoted
- Fixed-price quotesIn writing, from the installer
- Every request answeredBy a real person, by phone or email
One thing, done properly
We do one thing: air conditioning for homes in Hounslow
No boilers, no plumbing, no office fit-outs. This site exists for one purpose: helping Hounslow homeowners choose the right air conditioning, then putting them in touch with a local F-Gas certified installer to fit and look after it.
If you're still deciding, compare the main types of home air conditioning, or use the air conditioning size calculator to see what size unit your room needs.
What is home air conditioning?
Home air conditioning is a system that cools a room by moving its heat outdoors through sealed refrigerant pipework. Most UK homes use a wall-mounted split system: a quiet indoor unit connected to an outdoor unit. Nearly all modern systems are reversible, so the same unit heats the room in winter.
- Indoor unit
- Wall, floor or ceiling mounted
- Outdoor unit
- Wall bracket or ground stand
- Refrigerant
- Usually R32 in modern systems
- Controls
- Remote, wall controller or app
Home air conditioning services in Hounslow
Installation, repair and servicing for every common home system, carried out by local F-Gas certified installers.
Multi-room air conditioning
One outdoor unit running two to five indoor units, with separate temperature control in each room.
Get a multi-room quote →Loft & extension air conditioning
Cooling for the hottest rooms in the house: loft conversions, dormers, garden rooms and glazed extensions.
Get a loft or extension quote →Air conditioning repairs
Not cooling, leaking water, showing an error code or making a noise? Repairs for all common brands.
Request an air con repair →Air conditioning servicing
An annual clean, filter change and refrigerant check to keep your system efficient, quiet and within warranty. See what a service includes and costs.
Request an annual service →Heating with air conditioning
Reversible split systems heat as well as cool — an efficient way to warm a single room or extension.
Ask about heating with air con →Which type of air conditioning suits your home?
The right system depends on how many rooms you want to cool and where an outdoor unit can go. Many Hounslow homes are terraces, semis and flats, so the outdoor unit position is usually the deciding factor — the installer checks it on survey.
| System | Best for | Rooms | Outdoor unit? | Typical fitting time | Typical UK cost |
|---|---|---|---|---|---|
| Wall-mounted split | Bedrooms, living rooms, home offices | 1 | Yes | 1 day | £1,500–£3,000 |
| Multi-split | Several bedrooms or a whole floor | 2–5 | Yes, one shared | 1–2 days | £2,800–£7,000 (2–4 rooms) |
| Ducted (concealed) | Whole-home cooling with hidden vents; renovations and new builds | Several | Yes | 2–4 days | £6,000–£15,000 |
| Through-wall (no outdoor unit) | Flats or homes where an outdoor unit isn't allowed | 1 | No | 1 day | Varies by model |
| Portable | Short-term use or rented rooms | 1 | No — hose through a window | No installation | £200–£500 to buy |
Fitting times are for a straightforward installation. Long pipe runs, scaffolding or electrical upgrades add time. Costs are installed prices from published UK guides (OVO, June 2026; BestBuilders, September 2026) and exclude any electrical upgrade. London prices often run 20–30% higher.
Hounslow and Heathrow
Air conditioning under the Heathrow flight path
In much of Hounslow, a hot summer night means choosing between an open window and the noise of aircraft overhead. Heathrow's Residential Insulation Scheme is tackling the noise: its first phase (2025–2028) covers around 20,000 homes near the airport, funding up to 100% of acoustic windows, secondary glazing, doors and acoustically rated ventilation where an independent survey recommends them.
That ventilation lets fresh air in without opening a window, but it doesn't cool it. A well-sealed room can still overheat on a hot day. Air conditioning covers what the scheme doesn't: it cools the room with the windows shut, and most split systems heat it in winter too.
- Check your eligibility firstUse Heathrow's postcode checker to see if your home is in the scheme area.
- Air con isn't part of the schemeHeathrow funds insulation and ventilation, not cooling, so air conditioning is a separate cost.
- Your new windows stay untouchedSplit-system pipework runs through a small sealed hole in the wall, not through the glazing.
Free tool
What size air conditioner does your room need?
Our air conditioning size calculator works out how much heat each room takes in on a hot day and gives you the unit size in kW and BTU. It's a starting point for the installer's room-by-room heat-load calculation on survey.
What else changes the answer
- GlazingBi-folds, rooflights and conservatories can add a lot of heat.
- Insulation and ceiling heightLofts and vaulted ceilings need more cooling per m².
- People and electronicsHome offices and kitchens run warmer than bedrooms.
Air conditioning size calculator
- Room size, ceiling height and where the room is
- Window area, the way it faces and the glazing
- People and equipment in the room
- Add several rooms to plan a multi-split
Air conditioning in Hounslow: common questions
How much does it cost to install air conditioning in a Hounslow home?
UK cost guides put a single-room wall-mounted split system at £1,500–£3,000 fully installed, a multi-split for two to four rooms at £2,800–£7,000, and a ducted system at £6,000–£15,000. London prices often run 20–30% higher. Pipe-run length, access and the brand chosen move the price within those ranges. See air conditioning costs across West London by room and borough.
Do I need planning permission for air conditioning?
Often not for a house, but it depends on where the outdoor unit goes, its noise, and whether your home is listed or in a conservation area such as Old Isleworth or Strand on the Green. Flats usually need the freeholder's consent. The installer checks Hounslow Council's requirements as part of the survey. See our air conditioning planning permission guide and checker.
Can I have air conditioning if my home is in Heathrow's noise insulation scheme?
Yes. The scheme funds windows, doors, insulation and acoustic ventilation but not cooling, so air conditioning is fitted separately. The pipework goes through a small sealed hole in the wall, so new acoustic windows are left untouched.
How long does installation take?
Most single-room split systems are fitted in one day. Multi-room systems usually take one to two days, and ducted systems longer.
Can air conditioning heat my home as well?
Yes. Most modern split systems are reversible air-to-air heat pumps, so the same unit that cools a room in summer can heat it in winter.
Does my installer need to be F-Gas certified?
Yes. Anyone handling refrigerant must hold an F-Gas certificate, and the company must be registered with an F-Gas certification body such as REFCOM. Both can be checked on the certification body's public register, so check them before any work is booked.
How often should home air conditioning be serviced?
Once a year for most homes. An annual service keeps the system efficient and quiet, and many manufacturer warranties require one. See our air con servicing guide.
How a Hounslow air con installation works
- Tell us about your homeCall or email us. A real person reads every request and gets back to you.
- We put you in touch with a local installerAn F-Gas certified installer who covers your postcode.
- Free home surveyThe installer measures each room, checks sun exposure and agrees where the outdoor unit and pipework can go, with a room-by-room heat-load calculation so each unit is sized for the room, not guessed.
- Fixed-price written quoteIncluding any permissions or electrical work. There's no obligation to go ahead.
- Installation and commissioningPressure-tested, commissioned and recorded as the F-Gas rules require, then registered for warranty.
Air con installation standards in Hounslow
- Refrigerant handled only by F-Gas certified installers
- Every system leak-tested and commissioned, with F-Gas records kept by the installer
- Electrical work to Building Regulations Part P
- Outdoor unit positions checked against Hounslow Council planning guidance
Sources used on this page: GOV.UK F-Gas guidance, manufacturers' installation manuals, Hounslow Council planning guidance, and Building Regulations Part P for electrical work.
Request a free home survey
Email us about your home and we'll get back to you, then put you in touch with a local F-Gas certified installer to arrange a free survey. There's no obligation. For a breakdown, call 020 3143 3147 — it's faster.
- Your postcodeSo we can match you with an installer who covers your area.
- What you needNew air con, a repair or a service, and how many rooms.
- Your type of homeHouse, flat, bungalow, loft conversion or extension.
- Photos, if you have themWhere the outdoor unit could go, or the existing unit and any error code.