Air conditioning service cost

A professional service for a single wall-mounted split system typically costs £60–£120 per visit in the UK, with most homeowners paying somewhere around the £80–£100 mark. Multi-split systems cost more because each indoor unit adds work, though rarely at the full single-unit rate — most firms discount units after the first. That is the short answer to what an air conditioning service costs; the rest of this guide covers what that money should actually buy, when a plan beats pay-per-visit, and the pricing patterns that signal a service worth having versus a filter rinse dressed up with an invoice.

Typical air conditioning service prices

Prices run higher in London and the South East, and lower where competition among local firms is stronger. First-time visits on a system the company did not install sometimes carry a premium, because the engineer is assessing an unknown installation as well as servicing it.

One caveat matters more than any table: service visits are priced by the installer or maintenance firm, not by a national rate card. The ranges above are market-typical, and the firm figure comes from the company servicing your system — factors like access, travel distance, system age and whether they installed it all move the quote. Treat these numbers as a sanity check on quotes, not a price you can demand.

What a proper service includes

A genuine domestic service is a working inspection, not a wipe-down. For the £60–£120 you are paying, the engineer should cover:

• Filters and indoor unit — filters cleaned or replaced, the evaporator coil inspected and cleaned, and the casing and louvres checked.
• Outdoor unit — the condenser coil cleared of debris and cleaned, fan and mountings checked for wear and vibration.
• Condensate drainage — the drain line and any pump cleared and tested, since blocked condensate is the most common cause of leaks and damp.
• Refrigerant circuit — pressures checked and the circuit inspected for signs of leakage. This is legally restricted work: anyone handling refrigerant must hold F-Gas certification [1].
• Electrical checks — connections, isolator and controls tested, and the system run through cooling (and heating, on a reversible unit) to confirm performance.

For the detail on each of these tasks and what you can do yourself between visits, see the maintenance guide. For how often to book — annual for most homes, six-monthly for year-round use — see how often air conditioning should be serviced in the UK.

Why the refrigerant leak check matters

The leak check is the part of the service with a legal dimension. Under the UK F-gas regulations, systems whose refrigerant charge exceeds defined thresholds (measured in tonnes of CO₂ equivalent) must have periodic documented leak checks [1]. A single domestic split falls below the threshold, so there is no statutory duty for most homeowners — but larger multi-split systems can cross it, and either way a leak check is the most valuable ten minutes of the visit. A system that is low on refrigerant is not "due a top-up"; it has a leak, and running it that way strains the compressor, raises running costs and releases a potent greenhouse gas. Refrigerant top-ups are therefore not routine servicing, and a firm that offers a "regas" without finding the leak first is treating a fault as a consumable.

Service plans versus pay-per-visit

Most firms offer both, and the arithmetic is straightforward.

Pay-per-visit suits a single lightly-used split. You book once a year, pay £60–£120, and carry no commitment. The risk is the one everybody runs: the year slips, the service does not get booked, and the warranty condition quietly lapses.

A service plan — typically £80–£200 per year for a domestic system — bundles one or two scheduled visits, often with priority call-outs and discounted repairs. Plans cost slightly more than the equivalent single visit, but the firm does the remembering, the paperwork accumulates in one place, and heavily used systems that need six-monthly attention usually come out ahead. Compare the plan price against two individual visits before signing: a plan that costs more than two visits should be earning it through call-out cover.

Red flags when comparing quotes

A cheap service is only a bargain if it is a service. Watch for:

• The filter rinse. A ten-minute visit that cleans the filters, wipes the casing and leaves is not a service — filters are the part you can do yourself for free. If the engineer never opens the outdoor unit or checks the condensate drain, you have paid £60 for a job the maintenance guide shows you how to do.
• No F-Gas number. Any engineer touching the refrigerant circuit must be F-Gas certified [1]. Ask for the certification number; reputable firms volunteer it.
• No written report. The service report is your warranty evidence. No paperwork, no proof.
• Routine "regas" offers. As above — refrigerant loss means a leak, and topping up without fixing it is a recurring charge for the same fault.
• Vague per-unit pricing. On multi-splits, get the per-unit rate and the total in writing before the visit.

Car air conditioning is a different service

If you searched "air conditioning service" with your car in mind, this page is not the one you need. Vehicle air-con servicing — the £40–£100 "AC regas" offered by garages and fast-fit chains — is a different trade, covering a different refrigerant system under different rules, and is carried out by automotive technicians rather than building services engineers. This guide covers fixed air conditioning installed in homes: wall-mounted split systems, multi-splits and ducted systems.

Air conditioning service cost FAQs

How much does an air conditioning service cost in the UK? Typically £60–£120 for a single wall-mounted split, £110–£300 for multi-splits depending on the number of indoor units, and £150–£250 for ducted systems. Your servicing firm sets the exact price.

Is an annual service legally required? Not for a standard domestic split. Documented F-gas leak checks apply only above refrigerant-charge thresholds most home systems do not reach [1], and TM44 energy inspections apply only above 12 kW output [2]. The practical obligation is the warranty, which usually requires documented annual servicing.

How long does a service take? Around 45–90 minutes for a single split; longer for multi-splits and ducted systems.

Is a service plan worth it? Usually yes for multi-splits, heavily used systems and anyone who will not remember to book — provided the annual plan price is close to the cost of the visits it includes.

Does servicing include repairs? No. The service fee covers inspection, cleaning and testing; parts and repair labour are quoted separately, though plans often discount them.

Get a system with servicing built in

The cheapest servicing arrangement is the one agreed before the units go on the wall — many installers offer discounted first-year servicing or a plan alongside the installation quote. If you are still costing the system itself, start with the installation cost guide or the cost estimator, then request an installer match to get quotes that include the servicing terms in writing.