Commercial AC installation cost guide (UK, 2026)
Real 2026 UK trade prices for every common commercial AC system, cost per m² by space type, what drives price up or down, and 5-year total cost of ownership. All figures exclude VAT.
The figures on this page are approximate UK industry costs for 2026 — a market benchmark, not an AccuTemp price list. Across the trade, expect £1,400 – £2,600 for a single-room split, £2,400 – £4,200 per cassette, and £20,000 – £38,000 for a single-floor VRF. Whole-building projects across 1,000 m² or more start at £75,000. Cost per m² lands at £95 – £280 for offices and £220 – £360 for restaurants and gyms. All figures exclude VAT.
What AccuTemp actually charges.
- Installation from £1,400 + VAT. Every commercial install is quoted after a free site survey and heat-load calculation — the industry ranges below are a market benchmark, not a fixed AccuTemp price.
- Planned preventative maintenance from £100 + VAT per visit. Detailed photo reports, full compliance documentation and 6 or 12-month contracts.
No published price list — every commercial site is different. Request a written quote via the enquiry form.
Approximate UK installed prices by system.
Ranges below are indicative UK market prices for 2026, gathered from published trade data and comparable installs — not AccuTemp quotes. AccuTemp installations start from £1,400 + VAT after a free site survey.
| System | Supply | Install | Total (ex VAT) | Notes |
|---|---|---|---|---|
| Single wall-mounted split (1 indoor unit) | £800 – £1,600 | £600 – £1,000 | £1,400 – £2,600 | Small office, meeting room or shop up to ~25 m². R32 refrigerant. |
| Ceiling cassette (4-way, 1 indoor unit) | £1,400 – £2,400 | £1,000 – £1,800 | £2,400 – £4,200 | Suspended ceiling void required. Typical for 30 – 60 m² spaces. |
| Ducted (concealed, 1 indoor unit) | £1,800 – £3,200 | £1,400 – £2,600 | £3,200 – £5,800 | Requires ductwork and grilles. Priced per zone. |
| Multi-split (1 outdoor, 3 – 5 indoors) | £3,800 – £7,500 | £2,400 – £4,500 | £6,200 – £12,000 | Cost-effective for 3 – 5 rooms sharing one condenser. |
| VRV / VRF (single floor, ~250 m²) | £12,000 – £22,000 | £8,000 – £16,000 | £20,000 – £38,000 | Simultaneous heating and cooling. Daikin VRV 5 or equivalent. |
| VRV / VRF (whole building, 1,000 m² +) | £45,000 – £90,000 | £30,000 – £70,000 | £75,000 – £160,000+ | Priced per project after full heat-load calculation and site survey. |
| Server room CRAC (N+1 resilient) | £14,000 – £28,000 | £6,000 – £12,000 | £20,000 – £40,000 | Precision cooling, dedicated circuit, monitoring. Per rack row. |
Rule-of-thumb pricing by space type.
| Space type | Indicative range |
|---|---|
| Small office / retail unit (up to 100 m²) | £95 – £160 per m² |
| Mid-size office (100 – 500 m²) | £120 – £220 per m² |
| Large office / mixed-use (500 – 2,000 m²) | £160 – £280 per m² |
| Restaurant or gym (higher air changes) | £220 – £360 per m² |
| Data centre / server room (precision cooling) | £450 – £900 per m² |
The six factors that move a quote by thousands.
System type and refrigerant
VRV / VRF costs 3 – 4× a comparable multi-split because of inverter compressors, heat-recovery pipework and controls. A2L refrigerants (R32, R454B) are now standard — legacy R410A stock carries a phase-down premium in 2026.
Pipework runs and access
Long refrigerant runs, high-level pipework, core drilling through fire compartments and rooftop condenser lifts (crane hire, weekend permits) all add cost. A ground-floor unit with a short run is the cheapest case; a 30 m rooftop run with a night lift is the most expensive.
Electrical, condensate and controls
New sub-mains, isolators, RCBOs, condensate pumps and BMS integration are line items that many quotes hide. Expect £1,200 – £4,000 across a small install and £8,000+ on a VRF project.
Compliance and paperwork
F-Gas certificated install, TM44 sign-off for combined capacity above 12 kW, Part L build-notice and DEC updates. Not optional — factor 2 – 5% of project value.
Brand and warranty tier
Daikin D1+ Premier Partner installs (like AccuTemp's) unlock the 7-year manufacturer warranty. Generic or unbranded kit is 15 – 25% cheaper at supply but reduces resale value, extends payback and typically fails outside warranty inside 8 – 10 years.
Landlord Licence for Alterations
Not a hardware cost, but a real one. Landlord surveyor fees, method statements, RAMS and reinstatement bonds add £1,500 – £6,000 to a leased-office install. Start L4A the day the design is signed off.
Capex is only part of the number.
| System | Install (capex) | Maintenance | Energy | 5-year total |
|---|---|---|---|---|
| Multi-split (5 x 3.5 kW indoors) | £8,500 | £600 / yr | £1,900 / yr | £21,000 |
| VRF (single floor, 250 m²) | £28,000 | £1,400 / yr | £4,200 / yr | £56,000 |
| Cassette suite (4 x cassette) | £13,500 | £800 / yr | £2,600 / yr | £30,500 |
Energy figures assume UK non-domestic electricity at 28p/kWh and an average 8-hour working day, five days a week. Actuals vary by tariff, occupancy and set-point.
Related guides: installation timelines, sizing guide, VRF vs split, office installation, server room cooling.
Related: sizing guide, VRF vs split, install timelines, Daikin vs Mitsubishi, TM44 inspections, knowledge hub.
Frequently asked questions
- How much does commercial air conditioning cost in the UK in 2026?
- As a 2026 UK market benchmark, expect approximately £1,400 – £2,600 for a single-room split, £2,400 – £4,200 per ceiling cassette, and £20,000 – £38,000 for a single-floor VRF system covering around 250 m². Whole-building VRF projects across 1,000 m² or more start at around £75,000. All figures exclude VAT and are indicative industry ranges for planning only — AccuTemp does not publish a fixed price list and every quotation is issued after a free site survey and heat-load calculation.
- How much does commercial AC cost per m²?
- Typical UK industry benchmarks for 2026 are £95 – £160 per m² for small offices and retail units, £120 – £280 per m² for mid-size and larger offices, £220 – £360 per m² for restaurants, gyms and other high air-change spaces, and £450 – £900 per m² for data centres with precision cooling. These are planning figures, not AccuTemp quotations.
- Is Daikin more expensive than other brands?
- Across the industry, Daikin equipment is typically 15 – 25% more expensive at supply than generic brands, but Daikin D1+ Premier Partner installations unlock a 7-year manufacturer warranty and last 15 – 18 years on average versus 8 – 10 years for unbranded kit. Whole-life cost per year is usually lower with Daikin.
- What's included in an AccuTemp installation quote?
- AccuTemp installations start from £1,400 + VAT and every written quotation is prepared after a free site survey. A typical quote covers heat-load calculation, indoor and outdoor units, refrigerant pipework, drainage, electrical connections up to the local isolator, commissioning, F-Gas paperwork, TM44 sign-off if applicable, and up to 7-year manufacturer warranty. Landlord Licence for Alterations fees are itemised separately. AccuTemp does not publish a fixed price list — figures elsewhere on this page are industry benchmarks for comparison only.
- How much does a VRF or VRV system cost?
- As an industry benchmark, a single-floor VRF covering 250 m² typically runs £20,000 – £38,000 installed. Whole-building VRV across 1,000 m² or more starts at around £75,000 and can reach £160,000+ for heat-recovery configurations with BMS integration. Pricing is per project after a full heat-load calculation and site survey.
- Are there hidden costs I should watch for?
- Common hidden costs across the industry are landlord Licence for Alterations fees (£1,500 – £6,000), condenser crane lifts (£800 – £2,500), new electrical sub-mains (£1,200 – £4,000), condensate pumps (£150 – £400 per unit) and BMS integration (£2,000 – £8,000). A proper site survey exposes all of these before contract — AccuTemp itemises every line so nothing appears later.
- Can I finance commercial air conditioning?
- Yes. AccuTemp offers operating lease and hire-purchase options through third-party finance partners, typically 3 – 7 years. Payments are usually 100% tax-deductible as a business expense. We can quote monthly figures alongside the capital price.
- Does the price include ongoing maintenance?
- Installation and maintenance are separate. AccuTemp planned maintenance starts from £100 + VAT per visit, with most commercial sites on two visits a year to keep manufacturer warranty valid. Multi-site and higher-use environments like kitchens or server rooms typically run four visits a year.
- How much does F-Gas leak-check compliance cost?
- F-Gas leak checks are typically bundled into a planned maintenance visit. Standalone leak checks run £120 – £250 per visit across the industry depending on system size and CO₂-equivalent charge, with frequency set by regulation (annual, six-monthly or quarterly).
- What ROI can I expect from a new commercial AC install?
- Modern A2L systems typically deliver 30 – 45% energy savings versus a legacy R410A or R22 install. On a mid-size office replacing 10-year-old equipment, this usually gives a 5 – 7 year payback on energy alone, before factoring in reduced call-outs, warranty cover and improved EPC rating for MEES compliance.
- Do you price-match other quotes?
- We benchmark every AccuTemp quotation against current UK trade prices and are transparent about where a competitor's figure is lower — usually it's non-D1+ equipment, shorter warranty, no BMS integration or missing electrical scope. Every AccuTemp quote itemises equipment, electrical scope, controls and commissioning so a fair like-for-like comparison is possible.
Turn these ranges into a firm, line-by-line price for your building.
Share a few details and a senior AccuTemp engineer will arrange a free on-site survey, run the heat-load calculations and issue an itemised written quotation within 2 working days.
- Free commercial site survey across the Midlands
- Itemised quotation — no hidden extras, VAT shown clearly
- Daikin D1+ Premier Partner design and installation
- Response within 2 working days, every enquiry