When your air conditioning stops cooling, starts leaking or shows an error code, you need a fast and reliable fix. Eton Air Conditioning provides 24/7 air conditioning repair for homes and businesses across London, Eton and Berkshire, with over 10 years’ experience diagnosing faults on split, multi-split, ducted and cassette systems.
Our qualified engineers find the root cause, explain the problem in plain English and give you a clear quote before any work begins. We repair Mitsubishi Heavy Industries, Daikin and most other major brands, so your system is back up and running as quickly as possible.
Day or night, call 07999 005186
Whatever the problem, our engineers carry the tools and experience to diagnose it quickly and fix it properly, often on the first visit.
Warm air or weak cooling is often caused by blocked filters, a refrigerant leak, a faulty sensor or a problem with the outdoor unit.
Filters, gas or sensorsIf your system blows cold air in heat mode, the reversing valve, sensors or outdoor unit may need attention.
Valve, sensors or controlsWater dripping from the indoor unit usually points to a blocked condensate drain, a failed pump or a frozen coil.
Drain, pump or coilRattling, buzzing, clicking or grinding sounds can mean loose parts, a worn fan motor or a failing compressor.
Fan motor or compressorMusty or damp smells come from mould and bacteria building up on filters, coils and in the drain tray.
Coil and drain cleaningNo power or no response can be a tripped breaker, a wiring fault, a failed PCB or a faulty remote or controller.
Power, PCB or controlsFlashing lights or a fault code on the display tell us where to look. We read and diagnose codes on all major brands.
Fault code diagnosisIce on the pipes, hissing sounds or falling performance can signal a gas leak. We find, repair and re-gas the system.
Leak repair & regasSome problems have a simple fix. Try these safe checks first, it could save you a call-out.
Make sure the unit is switched on at the isolator and that the circuit breaker in your fuse board has not tripped.
Replace the remote batteries and confirm the system is set to Cool or Heat, not Fan or Dry, with a sensible temperature.
Blocked filters are the most common cause of poor cooling. Gently remove, rinse and dry them, then refit.
Make sure nothing is blocking the outdoor unit, such as leaves, bins, plants or covers.
Switch the system off for five minutes, then turn it back on. If a fault code returns, note it down for our engineer.
From a single wall-mounted unit to a full office system, we repair air conditioning in every type of property.
A broken air conditioner during a heatwave or a cold snap is more than an inconvenience. We work cleanly and carefully in your home and aim to restore comfort as quickly as possible.
When air conditioning fails at work, staff, customers and equipment are affected. We respond quickly and can work around your opening hours to keep disruption to a minimum.
A simple, transparent process from your first call to a fully working system.
Tell us what the system is doing, any error code and your postcode.
A qualified engineer attends and checks the whole system, not just the symptom.
We explain the fault and give you a clear price before any work begins.
We fix or replace the faulty part, using genuine or approved parts where needed.
We test cooling, heating, drainage and controls to confirm it is working correctly.
We share simple tips and servicing advice to help prevent the fault returning.
Most faults can be repaired. Sometimes a new system is the better long-term choice. Here is how we help you decide.
If your system is old, keeps breaking down or the compressor has failed, a modern inverter system may cost less to run and be more reliable over time. We will always give you an honest recommendation.
A faulty air conditioner needs more than a quick reset. Our engineers trace the real cause of the problem, so the same fault does not keep coming back.
With over 10 years’ experience across London, Eton and Berkshire, we repair residential and commercial systems of all sizes, and we always tell you the price before we start.
Available day and night, including weekends and bank holidays.
No surprises. You approve the price before any repair begins.
10+ years repairing Mitsubishi, Daikin and other major brands.
From Westminster and Kensington to Ealing, Richmond, Windsor and Maidenhead, our engineers repair air conditioning in homes and businesses across every London borough and the wider Berkshire area.
Call our engineers 24/7 for fast, reliable air conditioning repair across London, Eton and Berkshire.
Answers to the questions we are asked most about air conditioning faults and repairs.
The cost depends on the fault, the parts needed and the type of system. Our engineer diagnoses the problem first and gives you a clear price before any repair work begins, so there are no surprises.
Yes. We are available 24/7, including evenings, weekends and bank holidays. Call 07999 005186 and we will arrange an engineer as quickly as possible.
Common causes include dirty filters, the wrong mode setting, a blocked outdoor unit, a refrigerant leak or a faulty sensor. Check the filters and settings first. If it still blows warm air, call an engineer.
Water leaks usually come from a blocked condensate drain, a failed condensate pump or a frozen evaporator coil. Switch the unit off to prevent water damage and book a repair.
We specialise in Mitsubishi Heavy Industries and Daikin systems and also repair most other major brands of split, multi-split, ducted and cassette air conditioning.
Not always. Air conditioning systems are sealed, so low refrigerant means there is a leak. We find and repair the leak first, then re-gas the system in line with F-Gas regulations.
Regular servicing is the best way to prevent faults. Cleaning filters, coils and drains and checking refrigerant and electrics helps your system run efficiently and last longer.
Keep your system running at its best with our servicing, installation and heat pump services.
Regular servicing helps prevent breakdowns and keeps your system efficient.
Learn more →If your old system is beyond repair, we design and install a new one.
Learn more →Efficient air source and air-to-air heat pumps for year-round comfort.
Learn more →