Air Conditioning Repair in London

Diagnosing and fixing AC faults across London - fast, reliable and fairly priced.

RAS Cooling Solutions Ltd provides air conditioning repair in London for homes and businesses. Our Refcom F-Gas registered engineers diagnose and fix faults on Mitsubishi Electric, Daikin, Samsung, LG, Fujitsu and other major brands, carry common parts so many repairs are finished in one visit, and quote before any work starts.

Last reviewed: · RAS Cooling Solutions Ltd, Refcom F-Gas registered

At a glance
WhatFault finding and repair of air conditioning systems
SystemsWall-mounted splits, ceiling cassettes, multi-split and commercial systems
BrandsMitsubishi Electric, Daikin, Samsung, LG, Fujitsu and more
Typical faultsNot cooling, water leaks, noises, error codes, iced pipes
CertificationRefcom F-Gas registered, so refrigerant work is legal
PricingClear diagnosis and an upfront quote before any work

Is your air conditioning not working?

Whether your unit has stopped cooling, is making unusual noises or is showing error codes you don't understand, our engineers can diagnose and fix the problem quickly and at a fair price.

Air conditioning repair in London: an engineer repairing pipework on an indoor unit

We carry a comprehensive range of parts for the major brands, so most air conditioning repair in London can be completed in a single visit. If the fault is straightforward, we'll often have it resolved the same day.

We work on all types of system - wall-mounted splits, ceiling cassettes, multi-head systems and commercial units - and give you a clear diagnosis and an upfront quote before any work begins. No hidden charges, no surprises.

What are the most common air conditioning faults?

These are the problems we're called out to most often, and what usually causes them:

Common air conditioning faults and their causes
SymptomLikely causes
Not cooling or blowing warm airLow refrigerant from a leak, blocked filters or coils, a faulty sensor or compressor
Water dripping from the indoor unitA blocked condensate drain, a failed condensate pump or a poorly fitted drain line
Unusual noisesA failing fan motor, loose panels or brackets, or a struggling compressor
Error code or flashing lightsA sensor, PCB or communication fault between indoor and outdoor units
Ice on the pipes or coilLow refrigerant, blocked filters or poor airflow
Won't switch onPower supply, isolator, PCB or remote control problems

What's included

  • Full diagnostic inspection of the system
  • Clear explanation of the fault and your options
  • Supply and fitting of replacement parts where required
  • Refrigerant leak test and recharge if needed (F-Gas compliant)
  • Filter clean as part of the visit
  • Test run and performance check once repaired

Should you repair or replace your air conditioning?

Repair is usually the better option for a system that is less than ten years old and uses a current refrigerant. If your unit is beyond economic repair, we'll give you an honest assessment and can supply and install a suitable replacement. We won't push you towards a new unit if a repair is the better option.

Older systems that run on R22 refrigerant are a special case: R22 can no longer be used to recharge systems in the UK, so a leak on an R22 system usually means replacement.

Why choose us for air conditioning repair in London?

Our Refcom F-Gas registered engineers are certified to work on refrigerant systems - a legal requirement for any repair that involves handling refrigerant. You can be confident the work is done correctly and in full compliance with UK F-Gas regulations.

We also carry extensive parts stock, so you're not left waiting weeks for a component that should be readily available.

Where do we work?

We provide air conditioning repair across every London borough, including Shepherd's Bush, Acton, Hammersmith, Wembley, Harrow, Hounslow, Westminster and City of London. See all the areas we cover.

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Trusted by Customers Across London

Homeowners and businesses across London rate our work. Read what they have to say.

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Air Conditioning Repair in London: FAQs

It depends on the fault and any parts needed. We diagnose the problem first and give you a clear quote before any repair work starts, so you are never surprised by the bill.

We respond as quickly as we can, including for emergencies, and many faults are fixed on the first visit because we carry parts for the major brands. Call us with the make, model and any error code to speed things up.

The most common causes are low refrigerant from a leak, dirty filters or coils, or a faulty sensor or compressor. A refrigerant leak must be found and repaired by an F-Gas certified engineer before the system is recharged.

Water leaks are usually caused by a blocked condensate drain or a failed condensate pump. It's worth switching the unit off and calling us, because water can damage walls, ceilings and electrics.

Yes. We repair Mitsubishi Electric, Daikin, Samsung, LG, Fujitsu, Panasonic and other major brands, and we work on splits, cassettes, multi-split and commercial systems.

Often it is, especially if the system uses a current refrigerant. Systems that use R22 can no longer be recharged in the UK, so a leak on an R22 unit usually means it's time to replace it.

What can we do for you?

Whether it's a new install, a repair or a service visit, get in touch for a free, no-obligation quote. Our team is ready to help.