Air Conditioning Repair London | Air Conditioner Engineers

Common Air Conditioning Fault Questions

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Leaking Water

The most common issues we get asked to resolve are when a unit is dripping water. The main reasons a unit may leak are that it has not been serviced or the condensate pump has failed. This type of repair is nearly always completed within the first hour on site, making it a fairly simple repair. The condensate pump is a serviceable part, and our London-based engineers keep spare stocks on the van in case it needs replacing. Call our team today to arrange for an engineer to visit your site.

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Or call us on 020 8346 6000

Not Cooling

If the unit turns on but doesn't produce either cool or warm air, it might have a gas leak. The aircon system will need inspecting to find the leak and repair it. We can test the pipework and vacuum the system to remove any air or moisture before filling it with the correct amount and type of refrigerant. This process typically takes around 4 hours to complete. Call our aircon repair team today.

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Call our friendly expert team today to arrange for one of our engineers to visit.

Or call us on 020 8346 6000

No Power

When the units appear to be dead and nothing shows on the wall controller, check your main fuse board to ensure it hasn't tripped. You can also check the electrical isolator, located next to the outdoor unit, to ensure it is in the on position. If both of these items appear okay, then you will need an air conditioning engineer to attend the site and diagnose the potential problem. Often, it's a simple fix, but if the system requires parts, we will always provide a written quotation before proceeding, ensuring that you don't receive an unexpected repair bill.

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Call our friendly expert team today to arrange for one of our engineers to visit.

Or call us on 020 8346 6000

Noisy Unit

If the outdoor unit is making more noise than usual, it might require a replacement fan motor. The same applies to the indoor unit. The condensate pump, which removes moisture from the system, may also be at fault. When it starts to fail, it can become noisy. All of the above point towards an imminent failure of the system, and early diagnosis and repair are essential to prevent further damage.

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Call our friendly expert team today to arrange for one of our engineers to visit.

Or call us on 020 8346 6000

Bad Smell

Air conditioning units recirculate the air within the room. Therefore, smells and odours build up on the cooling coils. The system removes moisture from the atmosphere, and consequently, a build-up of bacteria can occur that can only be removed with specialist chemicals. Having the units regularly serviced is a surefire way to eliminate these bad smells.

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Call our friendly expert team today to arrange for one of our engineers to visit.

Or call us on 020 8346 6000

Not Heating

Ensuring the controller is set to heating mode might sound like an obvious solution, but it's the most common diagnosis we make over the phone. If the air conditioning unit is neither heating nor cooling, the system may be short of refrigerant gas, indicating a possible leak.

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Call our friendly expert team today to arrange for one of our engineers to visit.

Or call us on 020 8346 6000

Gas Leak

The systems come pre-charged with refrigerant gas and should not require a top-up unless a leak has occurred in the system. Our air conditioning engineers have all the specialist equipment to locate and repair a gas leak and decommission the system. This process invariably takes 4 hours to complete.

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Call our friendly expert team today to arrange for one of our engineers to visit.

Or call us on 020 8346 6000

Poor Performance

Having the air conditioning system regularly serviced will help maintain its optimum performance. When a unit has not been serviced, the buildup of grime prevents the air conditioning system from ‘breathing’ both in and out. This will often result in not only poor performance but also increased running costs and system failures. A reliable sign that a system is blocked is the buildup of ice on either the indoor or outdoor units.

Still Have Questions?

Call our friendly expert team today to arrange for one of our engineers to visit.

Or call us on 020 8346 6000

Our Air Conditioner Repair Service

We understand the importance of arriving on site promptly when an air conditioning failure affects vital systems and people are relying on it. We have expert, experienced air con repair engineers all over London and the Home Counties ready to fix your systems promptly.

We will also repair AC units, even if we didn't install them. In 2024, 89% of our callouts resulted in the successful repair of failed units on our first visit. We also offer a 12-month warranty on every repair we undertake.

Many of the top 500 companies on the London stock market have relied on The Air Conditioning Company for many years. They know that we are capable of fixing a faulty air conditioning system quickly, with a minimum of fuss, and at competitive prices, preventing what can often prove to be costly downtime.

Our Air Conditioning Repair Engineers

Our senior AC repair engineers have years of experience and undergo continual, in-depth training courses provided by leading air conditioner manufacturers, including Daikin, Mitsubishi, Fujitsu, Gree, and Samsung. This in-depth knowledge allows our repair engineers to quickly determine the nature of any faults and repair your broken-down air conditioner.

We carry a wide range of replacement parts on our vans, saving our customers time and money by fixing the unit right there and then. If we need to source a part directly from the manufacturers, our buying power means that we can ensure that our customers get the best value in the shortest possible lead time.

Emergency Portable Air Conditioners

Should your unit fall into the unfortunate 11% of units that we are unable to repair on our first visit, there is still no need to worry!

We offer a wide range of portable AC units, ideal for homes, offices, and server rooms. Call our office, and our dedicated portable sales and hire team will be able to recommend the perfect unit for your room.

If parts are required for your faulty AC unit, we can arrange for an emergency mobile unit to be placed in the room until we order the parts and return to fit them. And you don’t need to worry about surprise bills; we always provide a written quotation for your approval before ordering parts or carrying out repairs.

If your AC unit is obsolete or parts are no longer available, we can arrange for an emergency mobile unit to be delivered until we can quote to replace your obsolete system.

How Much Does an Aircon Repair Cost?

We diagnose the majority of breakdowns within the first hour, so it's unusual for you to pay more than our initial call-out charge. In rare instances where a call-out exceeds one hour, additional time is charged only in half-hour increments. If we are unable to repair the fault at the first diagnostic visit, for example, because parts are required or our engineers need several hours to carry out the repairs, we will quote for the repairs at a subsequent visit.

The main cost of a major air conditioning repair is, more often than not, the cost of the spare parts themselves. On occasion, our engineers recommend that it may be more cost-effective to replace the entire system, specifically if the unit is ancient or contains R22 refrigerant gas, which was banned some years ago and cannot be used to re-commission AC systems.

It has been our experience that 60% to 70% of air conditioner breakdowns that require a call-out are avoidable, as the faults have been a direct result of poor routine AC maintenance. Had these units been subject to regular planned preventative maintenance by a competent firm of AC installers, they would not have failed in the first instance. Maybe use us next time!

Call our expert team now for your emergency repair.

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How can we help you?

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Complete the form below if you require a repair for your faulty air conditioner and a member of our repair team will contact you shortly to arrange to get your unit fixed ASAP. You can also call us on 020 8346 6000 during office hours.

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