Air Conditioning Water Leak Repairs
Commercial & Domestic
Is your air conditioning unit dripping water or pooling on the floor? Water leaks are the most common issue homeowners and businesses face with their AC systems. While a small drip might seem minor, it is often a sign of an underlying fault that can lead to property damage, mould growth, or complete system failure if left unaddressed.
At Mechcool, our F-Gas certified engineers specialise in fast, effective repairs for leaking air conditioning units across Horsham and the South East.
Why is my Air Conditioning unit leaking water?
An air conditioner’s job is to remove heat and moisture from the air. Under normal conditions, this moisture (condensate) is drained away safely. A leak occurs when this process is interrupted. The most common causes include:
– Blocked Condensate Drains: Over time, dust, debris, and algae can build up in the narrow drainage pipes, causing water to back up and overflow the internal drain pan.
– Frozen Evaporator Coils: If your filters are dirty or refrigerant levels are low, the internal coils can freeze. When that ice eventually melts, it overwhelms the drainage system, leading to significant leaks.
– Faulty Condensate Pumps: Many units use a small pump to push water to an external drain. If this pump fails or loses power, the water has nowhere to go but down your wall.
– Damaged or Unlevel Drain Pans: In older units, metal pans can rust through, or plastic pans can crack. If the unit was installed incorrectly and isn’t level, the water will spill over the edge instead of flowing into the pipe.
The Risks of Ignoring a Leak
A “sweating” or dripping unit is more than just a nuisance. Persistent moisture can lead to:
– Property Damage: Stained ceilings, peeling wallpaper, and damaged flooring or office equipment.
– Electrical Hazards: Water dripping into the unit’s internal electronics or nearby power sockets is a serious fire and safety risk.
– Health Issues: Standing water inside a unit is a breeding ground for mould and bacteria, which are then blown into the air you breathe.
How Mechcool Fixes the Problem
Energy-efficient systems
We don’t just mop up the water; we solve the root cause. Our repair process includes:
Prevention Advice: We provide guidance on how to avoid future leaks through simple maintenance.
System Diagnosis: We identify exactly why the water is escaping.
Drainage Clearance: Using professional tools to flush and sanitise the condensate lines.
Pump Testing: Ensuring your condensate pump is operational and reliable.
Understanding your legal responsibility
It is now a legal requirement that the owner of an air conditioning system ensure leak checks are carried out at least once a year on any plant that contains more than 3 kg of refrigerant. You also need to keep a record of all leak checks to show that these have been carried out by an engineer who holds a current refrigerant F gas handling licence. All Mechcool F gas clients are on our record system to ensure peace of mind.
Industries we work with
Our installation, repair and maintenance services are suitable for a range of sectors and residential properties, including offices, shops, sports centres, homes, multi-story developments, large retail spaces, factories, and medical facilities. These include:
Luxury Homes
Home Offices
Server Rooms
Hotels and Leisure
Offices
Medical
Education
Retail
We offer free, no-obligation quotes for all our air conditioning services in Sussex and Surrey. Get in touch today or call us on 01403 791307 or 07584 438322 with your air conditioning requirements.
Areas we cover: Billingshurst, Bolney, Burgess Hill, Brighton, Cowfold, Crawley, Cuckfield, Epsom, Faygate, Guildford, Haywards Heath, Horsham, Leatherhead, Redhill, Reigate, Rusper, Slinfold, Southwater, Warnham, Worthing
Quote Request
Don’t wait for a small drip to become a big repair bill. Whether it’s a domestic wall unit or a large-scale commercial system, the Mechcool team provides a seamless, professional service from start to finish.
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