The quick answer
From £2,000 for one room, fully fitted
- 1 room£2,000 to £2,850 for a wall mounted system, depending on size and brand.
- 2+ roomsFrom £3,800 for two rooms on one outdoor unit, up to £7,500 for four.
- BusinessFrom £2,100 for a ceiling cassette. Larger projects get a fixed quote after a free survey.
Prices
Air conditioning prices, fully installed
Every price includes the units, installation, up to 15m of pipework, commissioning and an F-Gas certificate.
Wall mounted, one room
| System | Best for | Fitted price |
|---|---|---|
| Daikin Sensira 2.5kW | Bedrooms, home offices | £2,000 |
| Mitsubishi Premium 2.5kW | Bedrooms, small rooms | £2,200 |
| Daikin Sensira 3.5kW | Living rooms | £2,300 |
| Mitsubishi Premium Black 2.5kW | Design-led rooms | £2,350 |
| Daikin Sensira 5.0kW | Large rooms, open plan | £2,550 |
| Daikin Emura 2.5kW | Designer finish | £2,576 |
| Daikin Sensira 7.0kW | Very large spaces | £2,800 |
Multi room
| System | Best for | Fitted price |
|---|---|---|
| Daikin 2 rooms (2 × 2.5kW) | Two bedrooms | £3,800 |
| Daikin 2 rooms (2.5kW + 3.5kW) | Bedroom and living room | £4,000 |
| Mitsubishi 3 rooms | Bedrooms upstairs | £6,000 |
| Mitsubishi 4 rooms | Whole-home comfort | £7,500 |
Other systems
| System | Best for | Fitted price |
|---|---|---|
| Mitsubishi low wall console 2.5kW | Conservatories, under windows | £1,890 |
| Compact ceiling cassette | Offices and shops | From £2,100 |
| Ducted, 1 to 3 rooms | Hidden finish | From £3,600 |
| Floor standing 7.1kW | No wall or ceiling space | £4,345 |
What affects the price
Five things that change the cost
Room size
Bigger rooms need more power. A 2.5kW unit suits most bedrooms, while open-plan spaces need 5.0kW or more.
Number of rooms
Each extra room adds an indoor unit. Multi split systems run several rooms from one outdoor unit.
Brand and finish
Designer units like the Daikin Emura or a black finish cost a little more than standard white.
Access and position
A high wall outdoor unit (+£100) or a room on the second (+£150) or third floor (+£200) adds a set charge.
Pipe length
Up to 15m of pipework is included. Longer runs are quoted in writing before you commit.
Running costs
What does it cost to run?
Air conditioning is a heat pump. It moves heat rather than creating it, so it gives out around 4 units of heat for every 1 unit of electricity.
Heating one room for a winter typically needs about 3,000kWh of heat. At 25p per kWh, a plug-in electric heater would cost around £750, while an air conditioner with a SCOP of 4.6 would cost around £163.
Estimate only. Your costs depend on your home, tariff and how you use the system.
What's included
Included in every fixed price
FAQs
Air conditioning cost questions
Still unsure? Call us on 0330 043 7869, 7 days a week.
How much does it cost to install air conditioning in one room?
A fully installed wall mounted system for one room starts from £2,000 with Airomax, including the units, installation, up to 15m of pipework and commissioning. Larger rooms need a bigger unit, up to around £2,850.
How much does air conditioning cost for a whole house?
For two rooms on one outdoor unit, prices start from £3,800. Three rooms start from £6,000 and four rooms from £7,500. Whole-home ducted systems start from £3,600 for one room.
Is air conditioning expensive to run?
Less than most people expect. Modern systems are heat pumps, so they move heat rather than make it. Heating a room typically costs around a quarter of a plug-in electric heater.
Are there any extra costs?
Our prices are fixed and fully fitted. A few situations add a set charge, such as a high wall position for the outdoor unit (+£100), a second floor room (+£150) or a third floor room (+£200). You'll see these before you book.
Can I spread the cost?
Yes. 0% finance is available on selected systems through PayItMonthly, subject to status.
See your exact price in under a minute
Prefer to talk? Call 0330 043 7869, 7 days a week.