Indoor air conditioning unit installation in London
Wall-mounted indoor air conditioning units fitted level, quiet and tidy in homes and offices across London, with the wall neatly sealed around the pipework.
Air conditioningThe indoor unit is the part you see and hear
Indoor air conditioning unit installation looks simple, but position and finish decide whether you barely notice the system or it blows straight onto the sofa and drips down the wall. Our engineers fix the wall bracket, hang the unit level, and make the hole and seals in the wall properly.
We choose the height and the spot with airflow in mind, away from beds and desks, clear of curtains and shelves, and where the pipes can leave the room by the shortest neat route. The unit is tested before we hand over, and the outdoor condenser mounting follows on the same job.
What we do at this stage
Each part of the indoor installation is done and checked before the next begins.
Position and airflow
A spot that spreads cool air across the room, with the clearance the maker specifies.
Wall bracket fixing
The mounting plate is fixed into solid wall, levelled and checked for the unit's weight.
Core hole through the wall
A neat hole of about 65 mm, angled slightly outward so the condensate drains away.
Sleeve and sealing
The hole is sleeved and sealed inside and out against draughts, damp and insects.
Pipes, cable and drain hose
Connected to the unit and neatly routed, with trunking where it is on show.
Filters and airflow check
Filters seated, louvres moving freely and the unit checked for level, noise and vibration.
How the visit runs
We protect your room
Floors and furniture are covered and the wall is marked out with you before any drilling.
We fit and connect
Bracket, wall hole, sleeve, unit and pipes are fitted alongside the outdoor work.
We check and tidy
The unit is checked for level and noise, and we clear away packaging and dust.
Where an indoor unit should and should not go
Manufacturers give minimum distances from the ceiling and side walls, and a minimum height above the floor, so the unit can draw air in and throw it out freely. We work to those figures rather than to what merely looks convenient. As a general rule, an indoor unit is best placed high on a wall facing into the room, with a clear run of several metres in front of it.
Avoid mounting above a bed, a desk or a favourite armchair, where the airflow will feel like a draught. Keep the unit away from cookers, radiators and direct sunlight, which can confuse the temperature sensor and make the system work harder than it needs to. In a bedroom, a quiet mode and a spot away from the headboard usually work best.
If a wall-mounted unit will not suit your room, we say so at the survey and explain why, rather than fitting something that will disappoint you later.
Frequently asked questions
How high should an indoor air conditioning unit be fitted?
High on the wall, following the manufacturer's minimum height and ceiling clearance. Your engineer marks the position with you before drilling, so you can see exactly where it will sit.
Will the hole in the wall damage my property?
The core hole is small, about 65 mm, and it is sleeved and sealed on both sides. It is made once, in the position agreed with you.
Can the pipes be hidden?
Pipes can be run in trunking on the wall, boxed in, or hidden in a wall or ceiling void where the building allows it. Your engineer shows the options at the survey.
Is an indoor unit noisy?
A correctly fitted unit is quiet in normal use. Level mounting, secure brackets and clean filters keep vibration and fan noise down.
Book your indoor unit installation
Know the price before we start
Every service on this site has a published rate by time band. Check what your job costs, then book the slot that suits you. You can also return to the air conditioning overview or browse all our services.
Published rates
Air conditioning hourly rates in London
You pay a first-hour rate, then a lower rate for each extra half hour. The rate depends on the day and time of the visit.
| Air conditioning | Mon–Fri 8am–6pm | Mon–Fri 6pm–10pm | Saturday 8am–6pm | Sunday 8am–6pm |
|---|---|---|---|---|
| First hour | £85 | £88 | £88 | £98 |
| Each extra half hour | £42 | £45 | £50 | £52 |
| Daily rate | £495 | — | — | — |
Rates apply to jobs inside the M25. Minimum charges apply. Materials are charged in addition to labour, and shopping time for materials is charged at £35 per hour. See the full rate card.
Why Plumbery
Qualified, insured and upfront about price
Every engineer we send is registered or qualified for the trade they work in, and you can check the details before anyone starts.
- Gas Safe registeredGas and heating work is done by Gas Safe registered engineers.
- NICEIC qualifiedElectrical work is done by NICEIC-qualified electricians.
- F-Gas certifiedAir conditioning work is done by F-Gas certified engineers.
- Fully insuredEvery job is covered by our insurance.
- Rates published in advanceOur hourly rates are on the pricing page. Nothing starts until you agree the rate.
- Paperwork includedGas safety certificates and electrical records are provided on completion.
- Registered companyPlumbery Ltd, company no. 11677583, registered in England and Wales.
All air conditioning services
Survey and unit sizing
Outdoor condenser mounting
Electrical connection
Commissioning and handover