Commercial air conditioning
London
Commercial air conditioning for offices, shops, salons, restaurants and server rooms, installed out of hours so you never have to close.
Rated 5.0 on Google- Designed from a real heat load, not a rate per square metre
- Out of hours and weekend installation as standard
- F-Gas leak checking and record keeping handled for you
Prefer to talk? 020 3393 1331
Accredited, and fitting the brands you know
What commercial work costs
Typical installed prices for smaller premises. Every quote is fixed in writing after the survey and the heat load calculation.
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One roomOffice, reception or trade counter: one wall unit or cassettefrom£2,400to £4,100
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A shop or salonTwo or three unitsfrom£4,300to £8,600
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Small officeUp to 8 desks, two or three ceiling cassettesfrom£5,300to £11,300
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Larger floorsVRF, ducted and server rooms, priced from a heat load calculationFree surveyon jobs over £5,000
Your estimate
£2,400to£3,200
Supplied, fitted, commissioned and certificated. Includes VAT.
Send this on WhatsAppPrice it for your premises
Commercial work is priced on the number of indoor units and what kind they are, the same as anywhere else. The heat load calculation at the survey is what turns this into one number.
Last step: what number should we call with your fixed price?
Every figure on this site is an estimate built from the quotations we issued in 2026 and our own installation experience. It is not a quotation. The price you are given after the free survey is the price you pay.
Why businesses use us
What goes wrong when commercial air conditioning is priced like a house, and what we do instead.
Rated 5.0 on Google-
Sized from a heat load
People, lighting, equipment and glazing counted room by room, not a rate per square metre.
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You do not close
Out-of-hours and weekend installation as standard, with the windows agreed before anyone starts.
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Quotes you can compare
Plant, installation, electrics and builders work priced separately, so a cheaper quote that left the electrics out shows.
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Compliance handled
F-Gas leak checks and records kept for you, NICEIC certified electrics, and a straight answer on whether you need a TM44.
Air conditioning we have installed
Our own jobs, each with its own page and the photographs from the day.
Air conditioning
BR3
Beckenham
Daikin multi-split, four rooms from one outdoor unit
One outdoor unit on the rear patio serving four indoor units, with the pipework taken up the back wall in trunking beside the downpipe and pressure tested with nitrogen at 40 bar for two hours before it was charged.
Read the case study
Air conditioning
CR2
South Croydon
LG wall-mounted air conditioning, fitted during a renovation
A large open-plan room in a house being renovated: the lines brought down from the ceiling first, the brackets fixed over them, and the LG units lifted on high on the wall.
Read the case study
Air conditioning
N11
New Southgate
Daikin multi-split condenser
Wall-mounted on brackets rather than stood on the ground, which is usually what a narrow side return leaves you, and the refrigerant lines dropped in a single trunked run.
Read the case study
Air conditioning
EN4
East Barnet
Air conditioning pipework in a new nursery, first fix
A nursery still being built: the refrigerant pipework and control cables run through the ceiling void above the corridor and down a riser between floors, tied in and sealed, before the ceilings and walls are closed.
Read the case study
Commercial work in three steps
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Survey and heat load
People, lighting, equipment and glazing, counted room by room.
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A drawing and a fixed price
Plant, installation, electrics and builders work quoted separately.
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Installed around you
A programme with the out-of-hours windows agreed before anyone starts.
The full guide: what each type of premises needs, and the compliance side
Commercial air conditioning in London starts at our home rates: 4,300 to 8,600 pounds for a small shop on two or three wall units. An office floor is priced from a heat load calculation, not from a table.
The number comes from a heat load calculation that counts people, lighting, computers, cooking equipment and glazing, because two units of the same floor area can need completely different plant.
What each type of premises actually needs
| Premises | Usual system | The thing that catches people out |
|---|---|---|
| Small office, up to 8 desks | 2 to 3 ceiling cassettes | Computers and people add more heat than the sun does |
| Open-plan office floor | VRF with zoned cassettes | One thermostat for the whole floor causes complaints |
| Shop or showroom | Wall units or slim ducted | Door open all day doubles the load in winter |
| Hair or beauty salon | Ceiling cassettes | Dryers put out 2kW each and the extract has to keep up |
| Restaurant or cafe | Cassettes plus dedicated kitchen extract | Cooling the dining room does nothing for the kitchen |
| Gym or studio | High capacity ducted | Air changes matter as much as temperature |
| Server or comms room | Dedicated close control unit | It must run in January as well as July |
| Warehouse or workshop | High-level ducted or destratification | Cooling the whole volume is rarely the right answer |
The compliance side, which most quotes ignore
Commercial air conditioning carries duties that a domestic system does not. Three of them are commonly missed, and all three sit with the business occupying the building rather than with whoever installed the plant.
F-Gas leak checking
Systems containing 5 tonnes of CO2 equivalent or more must be leak checked at least annually by a certified engineer, every six months above 50 tonnes, and every three months above 500 tonnes with permanent leak detection fitted. Records must be kept for five years. Most office VRF systems are comfortably over the first threshold.
TM44 inspections
Any building with air conditioning over 12kW effective rated output needs a TM44 inspection by an accredited assessor at least every five years, with the report lodged on the national register. Several smaller systems in one building count together towards the 12kW. We are not an accredited assessment body and do not issue these, but we will tell you if you need one.
Workplace temperature
There is no legal maximum workplace temperature in the UK, despite what most people believe. The duty is to keep the temperature reasonable and to provide clean, fresh air. What that means in practice for an office is usually a design condition of 21 to 24 degrees, and it is what an employer will be measured against if a complaint is made.
How commercial work is priced
We quote from a heat load calculation and a drawing, and the quote separates the plant, the installation, the electrical work, the builders work and the out-of-hours premium so you can see what you are paying for. That matters when you are comparing three quotes and one of them is 30 percent cheaper because it left the electrical work out.
- Survey and heat load calculation, free on jobs over 5,000 pounds.
- Design drawing showing unit positions, pipe routes and condensate runs.
- Fixed price broken into plant, install, electrics and builders work.
- Programme with the out-of-hours windows agreed before we start.
- Handover pack: commissioning records, F-Gas log started, O and M manual, electrical certificates, warranty registrations.
Maintenance contracts
| Contract | Visits | Includes |
|---|---|---|
| Basic | 1 per year | Full service, F-Gas check and log where required |
| Standard | 2 per year | As basic, plus priority response and no call-out fee |
| Critical | 4 per year | As standard, plus agreed response time and consumables |
Priced per unit rather than per site, so a two-unit salon is not paying an office rate. We will survey an existing installation and tell you what condition it is in before you commit to a contract.
Commercial questions
How much does commercial air conditioning cost in London?
A small shop or salon on two or three wall units is 4,300 to 8,600 pounds on our rates, and ceiling cassettes add 500 to 900 a unit. An office floor or a VRF system serving a building is priced from a heat load calculation and a drawing, because the number of zones decides it and a figure given before that would be a guess.
Commercial work is quoted from a drawing and a heat load calculation, not from a rate per square metre, because the occupancy and the equipment load change the answer more than the floor area does.
A job in progress, with photographs: a new nursery in East Barnet EN4, fifteen Samsung units on one system.
Is my business legally required to leak check its air conditioning?
If the system contains 5 tonnes of CO2 equivalent or more, yes. Leak checks must be carried out at least every twelve months by a certified engineer, more often on larger systems, and records must be kept for five years. Most office VRF and larger multi-split systems are above the threshold.
The duty falls on the operator of the equipment. In a leased building that is normally the tenant, not the landlord, and it is one of the most commonly missed compliance duties we see.
Do you work outside business hours?
Yes. Most retail and office installations are done evenings, weekends or over a shutdown, because the alternative is closing the business for a week. It is quoted as part of the job rather than added afterwards.
Do I need a TM44 air conditioning inspection?
If your building has air conditioning with an effective rated output over 12kW, an accredited energy assessor must inspect it at least every five years and lodge a TM44 report. That includes several systems in one building that add up to more than 12kW.
We are not an accredited assessment body, so we do not issue TM44 reports. We will tell you if you are likely to need one, because the penalty for not holding a current report is a fine per building.
Can you take over maintenance of a system another firm installed?
Yes, and we do it regularly. We start with a condition survey of what is there, so the first thing you get is an honest list of what is wrong before you sign a contract, rather than after.
Send us the floor plan
A drawing and the opening hours are enough for us to tell you the likely system and a realistic budget before anyone visits.
Monday to Friday 9am to 7pm, Saturday 10am to 3pm, Sunday closed
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