Aircon Servicing & Repair in St Albans

Pricing depends on the service depth: a basic clean-and-check per unit is the cheapest, a chemical wash costs roughly double, and a full overhaul double again. Multi-unit discounts are standard. Get the per-unit rate and what is included in writing before booking — see the national price ranges on this page as a baseline.

A musty smell means mould or bacteria on the evaporator coil or in the drain pan — fixed with a chemical wash. A burning smell can be dust on a heater element or a failing motor and is worth an inspection. A vinegar-like or chemical smell can indicate a refrigerant leak; turn the unit off and call a technician.

The most common cause is a clogged condensate drain line — dirt and algae block the pipe and water backs up into the room. Other causes are a dirty evaporator coil that ices over and then melts, a cracked drain pan, or an incorrectly sloped drain pipe. A drain flush during a standard service usually fixes it.

A unit that trips the breaker at startup usually has a failing compressor, a shorted capacitor, or a wiring fault — all electrical faults that need a technician. Do not keep resetting the breaker; repeated tripping can damage the compressor beyond repair.

Refrigerant does not get used up — if the level is low, there is a leak. A proper job is leak detection, repair, then regas, which costs several times a plain top-up but stops the problem recurring. Be wary of any technician who suggests routine annual top-ups.

Yes — an annual service (£60-£150 per unit) is still worth it in the UK climate because units that sit idle grow mould in the coil and drain pan, and seals dry out. Book in spring before the short summer demand spike.

Usually yes for a single outdoor condenser under permitted development rules, but there are limits on siting (e.g. distance from boundaries, not on the principal elevation facing a highway) and flats/leaseholds normally need freeholder consent. Listed buildings and conservation areas need consent.