Air Conditioning Service Cost Factors

Our own diagnostic visit is charged from £120 +VAT and covers fault assessment, error-code reading and written findings. Published UK cost guides and competitor rate cards then give a useful budgeting picture for the work that follows: a one-off service on a single split system typically runs £95–£150 per unit. A multi-split with two to four indoor heads typically costs £150–£300 per visit, because each head is cleaned and checked in turn. Ducted and VRF systems typically run £250–£500 per visit and are often serviced six-monthly. A deep clean and sanitise is usually an add-on of £60–£150 per indoor head every two to three years.

For repairs, published guides put common replacement parts at roughly £100+ for a thermostat, £200+ for a fan or expansion valve, £300+ for leak repairs and circuit boards, £400+ for an evaporator, £600+ for a condenser and £1,000+ for a compressor — at which point replacement of the unit is often more economical. Refrigerant leak detection and repair typically starts around £300 depending on access and refrigerant type. Planned maintenance agreements are commonly priced from around £195 per system per year for twice-yearly visits.

Apart from our diagnostic visit, these figures are indicative market ranges, not our rate card. Every job beyond the diagnostic visit is quoted on request and confirmed in writing before work proceeds.

Diagnosis establishes whether the problem is settings, airflow, drainage, controls, electrical components or the circuit. Parts availability, model revision, commissioning and the underlying cause affect a repair proposal. A diagnostic visit is not a fixed-price guarantee to restore any system.

An asset survey, usage, visit frequency, access and postcode coverage inform a maintenance contract. Separate agreed routine tasks from chargeable repairs and statutory checks. Multi-site coordination does not establish a guaranteed attendance time or unlimited parts allowance.