Air Conditioning Service Cost Calculator
An annual service keeps the manufacturer warranty valid and catches a slow refrigerant leak before it becomes a compressor failure. This prices it.
Open the calculator →Price your AC service in 30 seconds
4 steps. System type, number of heads, deep clean and region.
How this calculator works
Servicing is priced by time on site, and time follows the number of indoor heads — each one has filters, a coil and a condensate drain to clean and test. That is why a four-head multi-split costs roughly double a single split rather than four times as much: the outdoor unit and the paperwork are done once.
The reason to bother is not just airflow. A refrigerant pressure check catches a slow leak while it is still a leak; left alone it starves the compressor, which is the one failure that usually writes off the unit.
On F-Gas: anything touching the refrigerant circuit legally requires an F-Gas registered engineer. Ask to see the registration and verify it on the register itself.
The heads count is the biggest single driver in this estimate because each indoor unit adds its own filters, coil and drain to clean and test, which is why the tool scales cost with time on site rather than charging a flat fee. A deep clean is worth adding every few years in dusty or pet-heavy homes, where a clogged coil quietly pushes up both noise and running cost long before it triggers an actual fault. Homes with several heads should sanity-check the figure against our multi-split cost guide, and because a freshly cleaned system draws measurably less power, it is worth reading our running costs guide to see what that saving looks like across a summer.
Air conditioning service cost (2026)
| System | Typical 2026 cost | Notes |
|---|---|---|
| Single split (1 head) | £80–£150 | Annual, 1–2 hours on site |
| Multi-split (2–4 heads) | £150–£300 | Annual, 2–3 hours on site |
| Ducted / VRF | £250–£500 | Annual, sometimes 6-monthly, half a day |
| Deep clean / sanitise | +£60–£150 per head | Every 2–3 years |
| Missed service | Warranty at risk | Most brands require documented annual servicing |
Figures match our AC servicing cost guide. Refrigerant work is legally restricted to F-Gas registered engineers — check the register yourself.
AC service calculator FAQs
Filter clean or replacement, coil and drain-pan clean, condensate drain check, refrigerant pressure check for leaks, electrical connections, and a performance test on both cooling and heating.
Usually yes. The major brands require documented annual servicing to keep a 5–7 year warranty valid, so keep every invoice and report.
Once a year for a domestic split, ideally in spring before the first hot spell. Ducted and VRF systems, and anything coastal or dusty, may want six-monthly attention.
For anything touching the refrigerant circuit, yes — it is a legal requirement. Ask to see it and check it on the register before booking.
Related cost guides
- AC servicing guide — what a service actually includes
- Repair costs — priced by fault
- All AC costs — every system type side by side
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