Air Conditioning Servicing Cost Calculator

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. The clean matters for the air you breathe, too: the cold, damp coil and drain pan are exactly where mould and bacteria settle, and a neglected unit ends up blowing that musty smell around the room — which is why a deep clean that strips and sanitises the coil and blower wheel is worth booking every couple of years on top of the annual check. If you would rather fix the cost, our maintenance contract guide compares annual plans against pay-per-visit.

On F-Gas: anything touching the refrigerant circuit legally requires an F-Gas certified engineer. Every engineer Air Con Surrey matches you with is vetted and F-Gas certified — but it is still worth asking to see the certificate before work starts.