# Air Conditioning Installation Cost London 2026 | Real Prices

> What air conditioning costs to install in London: 2,400 to 3,200 pounds per room fitted including VAT. Full price table, what adds cost, and a calculator.

*Climate Shield London — https://climateshieldlondon.co.uk/air-conditioning-cost-london/. Verbatim from the page; this is the same content, not a summary.*

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![Finished air conditioning outdoor unit standing on paving slabs beside a London house wall](https://climateshieldlondon.co.uk/assets/img/jobs/job-14-1200.webp)

# What air conditioning actually costs in London

Real numbers, what moves them, and what a quote should include. Use the calculator for an estimate in about thirty seconds, then get a fixed written price after a free survey.

- One room: **2,400 to 3,200 pounds** fitted, including VAT
- Two rooms on one outdoor unit: **4,300 to 5,800 pounds**
- Four rooms: **8,400 to 11,300 pounds**

Price it in 60 seconds [WhatsApp us](https://wa.me/447875564437?text=Hi%20Climate%20Shield%2C%20I%20would%20like%20a%20price%20for%20air%20conditioning.)

## Book a free survey

We come out, measure, and send a written price. No charge, no obligation, and no deposit before you have seen the number.

## Accredited, and fitting the brands you know

![NICEIC approved contractor](https://climateshieldlondon.co.uk/assets/img/accreditations/niceic-mark.webp) ![Gas Safe Register](https://climateshieldlondon.co.uk/assets/img/accreditations/gas-safe-mark.webp) ![MCS certified](https://climateshieldlondon.co.uk/assets/img/accreditations/mcs-mark.webp) ![RECC, Renewable Energy Consumer Code](https://climateshieldlondon.co.uk/assets/img/accreditations/recc-mark.webp) ![TrustMark, Government Endorsed Quality](https://climateshieldlondon.co.uk/assets/img/accreditations/trustmark-mark.webp) ![Vaillant](https://climateshieldlondon.co.uk/assets/img/brands/vaillant.573f9864.webp) ![Clivet](https://climateshieldlondon.co.uk/assets/img/brands/clivet.15efbad2.webp) ![Samsung](https://climateshieldlondon.co.uk/assets/img/brands/samsung.3b6b3325.webp) ![Daikin](https://climateshieldlondon.co.uk/assets/img/brands/daikin.ce47c11f.webp) ![Mitsubishi Electric](https://climateshieldlondon.co.uk/assets/img/brands/mitsubishi-electric.2977d309.webp) ![Bosch](https://climateshieldlondon.co.uk/assets/img/brands/bosch.7d80a7ce.webp)

## Price it yourself, in about a minute

Choose what you actually want and the range moves with it.

## Air conditioning we have fitted

Our own jobs, photographed on site. Real rooms, real outdoor positions, nothing from a catalogue.

[All our installations](https://climateshieldlondon.co.uk/installations/)

[![Outdoor unit on wall brackets, a job we fitted in London](https://climateshieldlondon.co.uk/assets/img/jobs/job-04-800.webp) Air conditioning **Outdoor unit on wall brackets** Above brick, isolator and cabling run tidy](https://climateshieldlondon.co.uk/installations/)[![Condenser going up on straps, a job we fitted in London](https://climateshieldlondon.co.uk/assets/img/jobs/job-06-800.webp) Air conditioning **Condenser going up on straps** Lifted into a wall position, no scaffold](https://climateshieldlondon.co.uk/installations/)[![Wall unit, commissioned, a job we fitted in London](https://climateshieldlondon.co.uk/assets/img/jobs/job-07-800.webp) Air conditioning **Wall unit, commissioned** Set to 24 degrees and handed over](https://climateshieldlondon.co.uk/installations/)[![Black wall unit in a sitting room, a job we fitted in London](https://climateshieldlondon.co.uk/assets/img/jobs/job-08-800.webp) Air conditioning **Black wall unit in a sitting room** Chosen to sit with the room, not against it](https://climateshieldlondon.co.uk/installations/)[![Ceiling cassette, a job we fitted in London](https://climateshieldlondon.co.uk/assets/img/jobs/job-09-800.webp) Air conditioning **Ceiling cassette** Recessed flush into the ceiling](https://climateshieldlondon.co.uk/installations/)[![Samsung Wind-Free, a job we fitted in London](https://climateshieldlondon.co.uk/assets/img/jobs/job-11-800.webp) Air conditioning **Samsung Wind-Free** Cooling without a draught on the room](https://climateshieldlondon.co.uk/installations/)[![Rooftop commissioning, a job we fitted in London](https://climateshieldlondon.co.uk/assets/img/jobs/job-12-800.webp) Air conditioning **Rooftop commissioning** Pressure tested and charged on gauges](https://climateshieldlondon.co.uk/installations/)[![Outdoor unit at ground level, a job we fitted in London](https://climateshieldlondon.co.uk/assets/img/jobs/job-14-800.webp) Air conditioning **Outdoor unit at ground level** On paving beside the house, easy to service](https://climateshieldlondon.co.uk/installations/)[![Black wall unit, running, a job we fitted in London](https://climateshieldlondon.co.uk/assets/img/jobs/job-15-800.webp) Air conditioning **Black wall unit, running** Quiet enough for a bedroom](https://climateshieldlondon.co.uk/installations/)[![One-way ceiling cassette, a job we fitted in London](https://climateshieldlondon.co.uk/assets/img/jobs/job-16-800.webp) Air conditioning **One-way ceiling cassette** Only the grille shows](https://climateshieldlondon.co.uk/installations/)[![Outdoor unit on paving, a job we fitted in London](https://climateshieldlondon.co.uk/assets/img/jobs/job-17-800.webp) Air conditioning **Outdoor unit on paving** Against render, clear of the boundary](https://climateshieldlondon.co.uk/installations/)[![Condenser high on a wall, a job we fitted in London](https://climateshieldlondon.co.uk/assets/img/jobs/job-18-800.webp) Air conditioning **Condenser high on a wall** On brackets where the ground was not an option](https://climateshieldlondon.co.uk/installations/)

Air conditioning installation in London costs 2,400 to 3,200 pounds for one room, 4,300 to 5,800 pounds for two rooms on one outdoor unit, and 10,400 to 16,700 pounds for a whole four-bedroom house.

All figures include the units, installation, commissioning, electrical work and VAT. What moves the number is access, pipe length and electrics rather than the brand of the unit.

### Read the full guide: 4 sections, about 2 minutes

## Price by job size

| Job | System | Installed price |
| --- | --- | --- |
| One bedroom | 2.5kW single split | £2,400 to £3,200 |
| One double bedroom | 3.5kW single split | £2,550 to £3,500 |
| One living room | 5kW single split | £2,750 to £3,850 |
| Two bedrooms | 2 x 2.5kW multi-split | £4,300 to £5,800 |
| Bedroom and living room | 2 unit multi-split | £4,650 to £6,450 |
| Three rooms | 3 unit multi-split | £6,400 to £8,600 |
| Whole 3 bed house | 4 to 5 units | £8,400 to £14,000 |
| Whole 4 bed house | 5 to 6 units, often 2 outdoor | £10,400 to £16,700 |
| Ceiling cassette, per room | Add to the above | +£500 to £900 |
| Slim ducted, per room | Add to the above | +£900 to £1,500 |

## What adds cost, and roughly how much

| Item | When it applies | Cost |
| --- | --- | --- |
| Pipe run over 25 metres | Outdoor unit far from the room | +£30 per metre |
| Wall-mounted outdoor unit | No ground position available | +£250 to £600 |
| Scaffold or tower | Above first floor, no safe ladder access | +£480 to £540 |
| Dedicated fuse board for the system | Most new installs need one | +£350 |
| Consumer unit upgrade | Board is full or has no RCD protection | +£450 to £850 |
| Condensate pump, per indoor unit | No natural fall to a drain | +£150 |
| Internal pipe boxing and decoration | Where a surface run is not acceptable | +£180 to £600 |
| Removing an old system | Replacement jobs, includes refrigerant recovery | +£180 to £350 |

Everything on this list is identified at the free survey and appears on the written quote. Nothing on it turns up as an extra on the day.

## How to compare three quotes properly

When two quotes for the same job differ by a thousand pounds, the difference is almost never profit. Ask all three installers these five questions and the gap usually explains itself:

1. **What is the make and model number of every unit?** Not the brand. The model, so you can compare the actual specification and the sound level.
2. **How many metres of pipework are included, and what is the rate after that?**
3. **Is a dedicated electrical circuit included, or are you spurring off something existing?** Spurring off a ring is a common corner cut and it is not compliant.
4. **Will I get a commissioning record with the weighed charge and the pressure test result?** If not, ask why not.
5. **What exactly is excluded?** Get it in writing.

## Where our numbers come from

The ranges on this page are our own installed prices, cross-checked in September 2026 against three published UK sources so you can see we are not inventing them: Checkatrade puts a 12,000 BTU wall unit at about 750 pounds plus 1,150 pounds to fit, Daikin publishes 1,800 pounds and upwards for a single room, and OVO publishes 1,500 to 3,500 pounds for a single room installation.

Every figure on this site is an estimate built from the quotations we issued in 2026 and our own installation experience. It is not a quotation. The price you are given after the free survey is the price you pay.

### What size do you need?

Getting the kW figure right is what decides whether the room is comfortable or whether the unit short-cycles all summer.

[Work out the size](https://climateshieldlondon.co.uk/what-size-air-conditioning-do-i-need/)

### What about running it?

The install price is the question everyone asks. The running cost is the one that decides whether you use it.

[Running costs](https://climateshieldlondon.co.uk/air-conditioning-running-costs/)

### There is now a grant for air-to-air

2,500 pounds towards an air-to-air heat pump, which is the machine most people call air conditioning. What it covers and what it does not.

[The air conditioning grant](https://climateshieldlondon.co.uk/air-conditioning-grant-uk/)

## Cost questions

### How much does air conditioning cost in the UK?

A single room wall-mounted split system costs 2,400 to 3,200 pounds supplied and fitted including VAT. Two rooms on one outdoor unit is 4,300 to 5,800 pounds, three rooms 6,400 to 8,600 pounds, and a whole four-bedroom house 8,400 to 11,300 pounds.

London sits at the upper half of those ranges, mainly because access is harder, parking is worse and more properties need scaffold or a lift to get an outdoor unit into position.

### Why do quotes for the same job vary by 1,000 pounds?

Three reasons, and only one of them is profit. First, what is included: some quotes exclude the electrical circuit, the making good, or the scaffold. Second, the unit: a budget brand and a Daikin or Mitsubishi of the same output differ by 400 to 700 pounds at trade. Third, the time spent commissioning, which is invisible on the quote and is where cheap installs are cheap.

Compare the make and model number, the length of pipe included, whether a dedicated circuit is in the price, and whether you get a commissioning record. Those four questions separate quotes faster than the total does.

### Is there VAT on air conditioning installation?

Yes, 20 percent, and every price on this page includes it. Air conditioning does not qualify for the 0 percent VAT relief that applies to heat pumps, solar panels and battery storage, because that relief covers energy saving materials and air-to-air cooling is not on the list.

There is one narrow exception: a system installed as part of a qualifying renovation of a dwelling empty for two years or more can attract 5 percent. Your accountant, not us, should confirm whether that applies.

### Can I get a grant or finance for air conditioning?

There is one now, and it is smaller than the heat pump grant people usually mean. The Boiler Upgrade Scheme lists 2,500 pounds towards an air-to-air heat pump, which is an air conditioner, alongside 7,500 pounds for an air-to-water heat pump, which heats radiators and hot water.

Since 2026 the Boiler Upgrade Scheme also lists 2,500 pounds towards an air-to-air heat pump, which is what an air conditioner is. It is not the same as the 7,500 pound grant for an air-to-water heat pump and the conditions are narrower: it depends on what is being replaced, on the property having a valid EPC, and on an MCS certified installation. We will check whether your property qualifies and tell you either way, and we will not put a grant in a quotation until it is confirmed. The current rules are on [GOV.UK](https://www.gov.uk/apply-boiler-upgrade-scheme/what-you-can-get).

There is a full page on it: [is there a grant for air conditioning](https://climateshieldlondon.co.uk/air-conditioning-grant-uk/).

If the grant is what you are after, that is an [air source heat pump](https://climateshieldlondon.co.uk/air-source-heat-pumps-london/) and it is worth 7,500 pounds.

### What does the price include?

The indoor and outdoor units, wall brackets or floor feet, up to 25 metres of insulated pipework, condensate run and termination, the isolator and the electrical connection, core drilling and making good, commissioning with a weighed refrigerant charge, certificates, warranty registration, and removal of all waste.

It does not include the dedicated fuse board for the system. Most installs need one and it is 350 pounds on our quotations, which is why it is a tick box on the calculator rather than folded into the headline figure. Also outside the price: scaffold where the position needs it, structural work, redecoration beyond making good the core hole, and a consumer unit upgrade if your board has no spare capacity.

All of it is identified at the free survey and written on the quote before you agree it, never afterwards.

## Turn the estimate into a fixed price

The survey is free and the price we give you afterwards is written, itemised and does not change unless you change the job.

Call 020 3393 1661 [WhatsApp us](https://wa.me/447875564437?text=Hi%20Climate%20Shield%2C%20I%20used%20the%20cost%20calculator%20and%20would%20like%20a%20fixed%20quote.)

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Page updated 19 September 2026