If you’ve been lying awake in a hot bedroom wondering what air conditioning actually costs, here’s the honest answer: professionally installed home air conditioning starts from £899. That’s less than many people spend on a summer holiday, for comfort that lasts every summer (and winter) after it.
Below is a full breakdown of what you’ll pay, what affects the price, and what it costs to run.
Quick answer: home air conditioning prices in 2026
| System | Typical installed price |
|---|---|
| Single-room wall-mounted unit | From £899 |
| Larger single room / premium unit | £1,200 – £1,800 |
| Two rooms (multi-split) | £2,200 – £3,500 |
| Three to four rooms | £3,500 – £6,000+ |
Every Notech installation includes the unit, professional fitting by F-Gas certified engineers, and a full manufacturer warranty with one year’s servicing. No hidden extras on the day.
What affects the price?
1. How many rooms you’re cooling. A single bedroom or living room is the most affordable starting point. A multi-split system (several indoor units running from one outdoor unit) costs more upfront but less per room.
2. The brand and model. We install trusted names like Samsung, LG, Panasonic and Fujitsu, brands with proven reliability, whisper-quiet operation and strong warranties. Premium models add features like smarter airflow, improved efficiency and app control.
3. The installation itself. A straightforward install, with the indoor unit on an external wall and the outdoor unit directly outside, sits at the lower end. Longer pipe runs, awkward access or upper-floor outdoor units add labour time.
4. Heating as well as cooling. Here’s the part most people don’t realise: the units we install are fully reversible: they cool in summer and heat in winter at remarkable efficiency. That’s built into the price, not an optional extra.
What does air conditioning cost to run?
Modern inverter-driven units are far cheaper to run than most people expect. A typical single-room unit cooling on a hot day draws around 0.5–1 kW, which is roughly 15–30p per hour at current electricity prices, and often less once the room reaches temperature and the inverter winds down.
In winter, the same unit switches to heating and delivers several times more heat than the electricity it uses, making it one of the cheapest ways to heat a room in the UK.
Are cheap portable units a better deal?
A £300–£500 portable unit looks tempting, but they’re noisy, inefficient, need a hose hanging out of the window, and typically cost more per hour to run than a properly installed split system, while cooling far less effectively. If you plan to use cooling every summer, installed air conditioning pays for the difference quickly and adds value to your home rather than clutter to it.
How long does installation take?
Most Notech installations are completed in a single day. Our engineers arrive in the morning; you’re sleeping in a cool bedroom that night. No mess, no disruption, no building work.
Is it worth it?
Ask anyone who’s been through a Liverpool heatwave in a modern, well-insulated home: bedrooms upstairs regularly hit 28–30°C and stay there all night. Air conditioning is the only solution that genuinely fixes it. And because today’s units heat as well as cool, it’s an investment you’ll use twelve months a year, not two weeks.
Get an exact price for your home
Every home is different, which is why we quote properly rather than guessing. Tell us which rooms you’d like to cool and we’ll give you a free, no-obligation quote, usually within 24 hours.