Air conditioning maintenance in London
A system that is never serviced runs harder than it needs to and fails sooner than it should. Annual maintenance covers the filters, the drainage, the electrics and — because it is a legal requirement above a certain refrigerant charge — an F-Gas leak check, carried out by F-Gas registered engineers.
- Gas Safe registered and fully insured
- DBS-checked engineers
- Emergency callout available 24/7
- Price agreed before work starts
Mon–Fri 8:00–17:30 · Emergency callout available 24/7
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What this includes
- Filters cleaned or replaced
- Condensate drain checked and cleared
- Refrigerant charge and pressures checked
- F-Gas leak checks, where required by law
- Electrical connections and controls checked
- Outdoor condenser cleaned and inspected
Worth knowing first
Some of this may save you a callout entirely. We would rather tell you than not.
F-Gas leak checks are a legal requirement, not an upsell
Systems holding a refrigerant charge above a set threshold must have periodic leak checks under F-Gas regulations. It is not something we invented to sell a service plan — it is the law, and only F-Gas registered engineers can carry it out.
A dirty filter is the most common reason for weak cooling
A filter clogged with dust makes the whole system work harder for less cooling, and is the single easiest thing maintenance catches. Simple to fix, and it is usually why a system that used to cool a room properly no longer quite manages it.
Once a year, before the weather asks anything of it
Booking maintenance in spring, before the first warm spell, means any fault gets fixed while it is inconvenient rather than while the system is needed. Booking it in the middle of a heatwave means joining everyone else who left it too late.
Maintenance is not the same as a repair
A maintenance visit is a scheduled check and clean. If it finds a fault — a refrigerant leak, a failing part — fixing that is separate work, priced and agreed before anything is done.
Common questions
How often should air conditioning be serviced?
Once a year is standard. Systems above a certain refrigerant charge also need periodic F-Gas leak checks by law, which a routine maintenance visit covers.
What does a maintenance visit actually cover?
Filters, the condensate drain, refrigerant pressures, electrical connections and controls, and the outdoor condenser — plus an F-Gas leak check where the system requires one.
Will maintenance stop my system from breaking down?
It catches most of the common causes — a clogged filter, a slow refrigerant leak, a blocked drain — before they become a breakdown, though it cannot guarantee against every fault.
Can you maintain a system installed by someone else?
Yes, including F-Gas leak checks on existing systems, whoever fitted them.
We also handle
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Air Conditioning Repair
A system that has stopped cooling, is leaking indoors, or is tripping the breaker — diagnosed before anything is quoted.
More on Air Conditioning Repair -
Air Conditioning Installation
Split and multi-split air conditioning, sized and sited properly, fitted by F-Gas registered engineers.
More on Air Conditioning Installation -
Air Conditioning Replacement
Replacing a system that has reached the end — including old units still running a refrigerant that can no longer be topped up.
More on Air Conditioning Replacement
Need air conditioning maintenance in London?
Tell us what’s happening and where you are, and we’ll tell you what it costs before anyone starts work.