How much does commercial air conditioning cost in 2026?

Written by the Commercial Air Conditioning team. Last reviewed 31 October 2026.

Short answer

Commercial air conditioning in the UK typically costs £1,450–£2,950 plus VAT for a single wall-mounted split, £2,150–£4,950 per ceiling cassette, and £2,450–£4,950 per indoor unit on a VRF system. Servicing starts at around £175–£245 for a visit covering the first indoor unit. Location, access, pipe lengths and electrics move the price most.

Typical installed prices by system

These are national guide ranges for supply and installation, excluding VAT, with standard access. London and the South East are usually higher; the North East, Wales, Scotland and Northern Ireland usually a little lower.

Single wall-mounted split (2.5–7 kW): £1,450–£2,950
Multi-split with 2–4 indoor units: £3,450–£9,950
Ceiling cassette: £2,150–£4,950 per unit
Ducted unit with grilles: £3,450–£7,950 per zone
VRF system: £2,450–£4,950 per indoor unit, typically £24,500–£79,500 for an office floor
Server room duty/standby pair: £3,950–£8,950

What pushes the price up

The equipment is often less than half the cost of a commercial installation. Labour, access and the building itself make the difference between two quotes for the same unit.

Long or concealed pipe runs between indoor and outdoor units
Roof access, scaffolding, towers or a crane for outdoor plant
A new electrical supply or distribution board work
Condensate pumps where water cannot drain by gravity
Out-of-hours working to keep the business open
Planning applications, noise assessments and landlord requirements
Builder's work: ceiling alterations, core drilling and making good

Running and maintenance costs

Budget for at least one service a year per system, and two or more for kitchens, gyms, salons and server rooms. A service visit is typically £175–£245 plus VAT for the first indoor unit, with extra indoor units around £85–£145 each on the same visit. Planned maintenance contracts typically cost £195–£495 per indoor unit per year for two visits.

Running costs depend on hours of use, set points and your electricity tariff. Modern inverter systems are much more efficient than units from 15–20 years ago, and when used for heating they deliver several units of heat for each unit of electricity.

Compliance costs to include

If your systems hold 5 tonnes CO2 equivalent of refrigerant or more, F-gas leak checks are a legal requirement — typically £145–£245 for the first system on a visit and £65–£125 for each additional system, often done during servicing. Buildings over the 12 kW threshold also need a periodic energy inspection (TM44), typically £395–£795 for a small building.

How to compare quotes

Ask every contractor to quote the same thing: unit make, model and capacity, refrigerant and charge, pipe lengths allowed, condensate method, electrical work included, controls, commissioning and F-gas paperwork. A cheap quote that leaves out the electrics, condensate pumps or access equipment is not cheaper.

Questions

Is VAT charged on commercial air conditioning?

Yes, at the standard 20% rate. VAT-registered businesses can usually reclaim it.

Is it cheaper to install in winter?

Demand peaks in late spring and summer, so booking earlier usually gives more choice of dates, though prices depend more on the job than the season.

Sources

Related services

This guide is general information, not legal advice. Rules can change; check the current position with the relevant authority for your building.