Air Conditioning Price Guide 2026
Thinking about air conditioning for your home? Here's what it really costs — from a single split unit to a full multi-room system — plus what to expect on running costs. Book a free assessment and get a clear, written quote before any work starts.
AIR CONDITIONING PRICE RANGES
Indicative ranges for a typical home installation — final quote confirmed after a free assessment
Single split (1 room)
£1,500 – £2,500
One indoor unit + outdoor unit
Dual/multi-split (2 rooms)
£3,000 – £5,000
Two indoor units, one outdoor
Multi-room (3+ rooms)
£5,000 – £8,000+
Three or more indoor units
What's included in the price
Final pricing depends on room size, unit type, the distance between indoor and outdoor units, and any structural work. Every quote is itemised and agreed before any work starts.
WHAT AFFECTS THE PRICE OF AIR CONDITIONING
Number of rooms
Each additional room needs its own indoor unit and pipework run. A single split is the most affordable; multi-room systems cost more but share one outdoor unit.
Room size & output
Larger rooms need higher-output indoor units (measured in kW). A living room needs more cooling power than a small bedroom, which affects the unit cost.
Indoor-to-outdoor distance
The further the indoor units sit from the outdoor unit, the more trunking and pipework is needed — and the more the installation costs.
Unit tier & features
Standard, mid-range and premium units differ in noise levels, efficiency, smart controls and design. Premium units cost more but run quieter and cheaper over time.
IS MULTI-ROOM AIR CONDITIONING WORTH IT?
If you're weighing a single unit against a full system, here's how to think about it.
Single split — one room
Best for a hot south-facing bedroom, a home office, or a living room. The most affordable entry point — installed in a day with minimal disruption.
Multi-split — two rooms
Two indoor units running from a single outdoor unit. Great for a bedroom plus living room, sharing the outdoor space and installation cost.
Full multi-room system
Three or more indoor units from one outdoor unit. Whole-home cooling — ideal if you work from home or want consistent comfort across every floor.
Running costs to expect
A modern inverter split costs roughly 30–50p per hour to run depending on unit size and your electricity tariff. Inverter technology ramps down once the room is cool, keeping running costs low.
A CHEAP AC QUOTE CAN COST MORE
An unusually cheap air conditioning quote often means undersized units, short warranty, or hidden extras for pipework and electrical work. A properly sized, well-installed system runs quieter, lasts longer, and costs less to run. Book a free assessment and get a full, itemised quote before you commit.
Gas Safe Registered
Reg. 594547 · every engineer NVQ Qualified
5.0 ★ · 70 reviews
100% of customers recommend us
Fast response
24/7 across Surrey, Berkshire, Bucks & West London
FREQUENTLY ASKED QUESTIONS
How much does air conditioning cost to install in a UK home?
A single split unit starts from around £1,500–£2,500 installed. A two-room multi-split runs £3,000–£5,000, and a full multi-room system £5,000–£8,000+. Final pricing depends on room sizes and installation complexity.
Is multi-room air conditioning worth it?
If you want consistent cooling across several rooms — especially if you work from home — a multi-room system shares one outdoor unit and is more cost-effective per room than fitting individual splits. We'll assess your home and recommend the right setup.
How much does air conditioning cost to run?
A modern inverter split typically costs 30–50p per hour to run, depending on the unit size and your electricity tariff. Once the room reaches the set temperature, the inverter ramps down and uses much less power to maintain it.
Do I need planning permission for air conditioning?
Most home air conditioning installs are permitted development, but there are rules around outdoor unit placement, noise, and listed buildings or conservation areas. We'll advise on your specific property during the free assessment.
How long does air conditioning installation take?
A single split is usually installed in a day. A multi-room system typically takes 1–2 days depending on the number of units and the pipework runs. We'll confirm timings before we start.
BOOK YOUR FREE AIR CON ASSESSMENT
Book online in 60 seconds and our NVQ Qualified engineers will assess your home, recommend the right system, and give you a clear, written quote — across Surrey, Berkshire, Buckinghamshire and West London.
See our full transparent pricing page