Air Conditioning Installation — Cost & How to Get a Quote
What a professional AC install costs in 2026, what it involves, and how to shortlist F-Gas certified installers near you.
1. Installation cost by type & rooms
The price depends on how many rooms and which system. These are 2026 guide ranges for a UK professional install.
| System | Typical cost |
|---|---|
| Single split (1 room) | £1,500 – £2,500 |
| Multi-split (2–3 rooms) | £3,000 – £5,500 |
| Whole-house (4+ rooms) | £5,000 – £9,000 |
| Commercial / office | £4,000 – £20,000+ |
| Reversible heat pump | £3,500 – £8,000 |
2026 guide figures — actual quotes vary with your property, the unit brand, and pipe-run length. Always get a written quote.
2. Fixed vs portable & common pitfalls
A professionally installed fixed system costs more upfront but is quieter, far more efficient and cools a house properly. Beware:
- ❌ Uncertified installers — always insist on F-Gas certification; it’s a legal requirement.
- ❌ Hidden pipe-run costs — longer or awkward runs add money. Confirm the pipe-run allowance in your quote.
- ❌ Undersized units — an installer who doesn’t survey your room and calculate the cooling load is guessing, and you’ll pay more to run it.
- ✅ Fixed beats portable for whole-home comfort — near-silent, 3–5× more efficient, and lasts 15–20 years versus 3–5 for a portable.
3. Versus: portable vs fixed split system
Portable unit
- ✅ No installation — plug in and go
- ✅ Move between rooms; cheaper upfront (£200–£600)
- ❌ Noisy (50–65 dB), inefficient, cools one room at best
- ❌ Takes floor space; 3–5 year lifespan
Fixed split system
- ✅ Near-silent (19–30 dB indoors)
- ✅ 3–5× more efficient; heats and cools year-round
- ✅ No floor space; 15–20 year lifespan; adds property value
- ❌ Requires professional installation (£1,500+)
Get free quotes from F-Gas certified installers
Tell us your property, rooms and budget — we’ll match you with up to 3 vetted installers who cover your postcode.
4. Who each is for
Choose a fixed install if…
You own your home, want a bedroom or living space you can rely on during heatwaves, or need quiet, efficient cooling (and heating) for 15+ years.
Choose portable if…
You rent (can’t install), need cooling immediately with no fitters available, or just want one room cooled for a heatwave rather than a permanent system.
Consider a reversible heat pump if…
You want heating and cooling in one system — and to potentially qualify for heat pump grants that shave the cost.
5. Verdict
More on air conditioning
AC installation FAQs
Air conditioning installation frequently asked questions
- How much does air conditioning installation cost in the UK?
- A single-room split system costs £1,500–£2,500 installed, a 2–3 room multi-split £3,000–£5,500, and a whole-house system £5,000–£9,000. Commercial installations start around £4,000. Prices include the units, fitting, refrigerant pipework and electrical connection, and depend on your property and installer.
- How do I get an air conditioning installation quote?
- Enter your postcode in our form to get up to 3 free, no-obligation quotes from local F-Gas certified installers. A good installer surveys your property, confirms the cooling load, and gives a written price covering the units, pipework and labour — compare a few before you choose.
- What does F-Gas certified mean?
- F-Gas certification is a UK legal requirement for anyone who handles refrigerant gases. Every installer we match you with holds valid F-Gas certification — it's non-negotiable and means the refrigerant is handled safely and legally.
- Do I need planning permission for air conditioning?
- For most domestic installations, no — Permitted Development rights usually cover the external condenser unit. Listed buildings and conservation areas typically need consent. Your installer will advise on your specific case before you commit.
- Can a split system heat as well as cool?
- Yes. Modern split systems are reversible heat pumps — they provide efficient heating in winter (typically 3–4× more efficient than electric heaters) and cooling in summer, making them useful year-round.
- How long does air conditioning installation take?
- A standard single-split install takes 4–8 hours. Multi-room systems typically take 1–2 days. Whole-house or the ducted systems take longer. Your installer will give you a clear timeline with the quote.
- F-Gas regulations for stationary refrigeration & air conditioning — https://www.gov.uk/guidance/stationary-refrigeration-and-air-conditioning
- The Carbon Trust — air conditioning guidance — https://www.carbontrust.com/
Install costs are 2026 guide figures from UK installers and depend on your property. Confirm the final price with a written quote from an F-Gas certified installer.