Category: Aircon Servicing

It’s a Tuesday night in your Bishan flat, the bedroom aircon has been on 2 hours, and there’s a line of water running down the wall below it. Not a drip — a steady trickle, and the paint has gone dark. The unit is still blowing cold, so nothing seems broken, which somehow makes it worse.

Why Is My Aircon Dripping Water?

Most of the time it is a choked drainage pipe. Your aircon does not just cool air, it dries it — pulling litres of moisture out of a humid Singapore flat every day. That water collects in a drip tray and runs outside through a drain pipe. When the pipe silts up with dust and grime, the water fills the tray and spills into your room instead.

That is the first thing a technician checks, but not the only cause:

The 5th row overlaps with a different fault. If the room has stopped getting properly cold as well as leaking, read why an aircon stops cooling — low gas presents both ways, and that changes what needs doing.

What Should You Do the Moment You See Water?

Switch the aircon off, at the remote and at the wall. A unit that keeps running keeps producing condensation, and every extra litre goes into your wall rather than outside. Then, in order:

1. Dry the wall and floor. Wipe it rather than leaving a towel to sit — damp fabric against plaster does its own damage. 2. Note where the water comes from. One corner, or the whole length of the unit? It is the most useful thing you can tell a technician in advance. 3. Check the drain pipe outside, if you can see it from your own window. A dry pipe while water pours indoors is a choke, confirmed.

What not to do is put a bucket under it and carry on. Ceiling board holds water for weeks, and mould costs far more than a choke.

What Can You Safely Check Yourself?

Wash the filters. The front cover of a split unit lifts open and the filters slide out — no tools, nothing to disconnect. Rinse, dry properly, slide back. Dirty filters restrict airflow, and restricted airflow is what lets a coil frost over and then drip. If your unit has run for months without a filter clean, that is worth 10 minutes before you book anyone.

Now the honest boundary. Stop at these:

• Opening the casing. Live electrical work behind it, and a coil that damages easily.
• Clearing the drain pipe. People push wire down it and puncture the pipe inside the wall — that turns a S$60 repair into a hacking job.
• Anything to do with the gas. Refrigerant is pressurised and regulated.
• The outdoor condenser. At height, outside a window, and live.
• A leak that returns after a clean. That is a fault, not dirt.

What Does It Cost to Fix an Aircon Leaking Water in Singapore?

Urban Company’s aircon water-leakage repair costs S$60 and takes about 60 minutes. That is the published price, not a figure that doubles once someone is standing in your bedroom, and the same figure covers the other common faults — poor cooling, power problems and unexplained noise.

Worth being precise about how the visit fee works: the S$60 is a visit fee replaced with the valid service cost. If the fix is the water-leakage repair, the S$60 is the job — not a diagnosis charge with a repair charge on top. If your unit turns out to need a different service, you pay that service instead. What to push back on elsewhere is the opposite structure: a call-out fee that survives the repair, or a “from” price quoted before anyone has looked at the drain.

Can Servicing Stop It Happening Again?

A drainage choke builds up gradually, so keeping the system clean is the standard way to stay ahead of it. It is maintenance, not a cure — if the unit is leaking today, get the repair first.

The interval matters more than the plan. A unit that runs most nights in a Singapore bedroom collects dust along the drain path far faster than one used a few weeks a year, and it is that path, not the coil, which eventually chokes. So the useful question is how often the units you actually use get cleaned — not which package carries the lowest headline number.

Servicing is priced per unit and the per-unit rate falls as you add units, so a 4-bedroom flat pays less per unit than a 1-bedroom. FoamJet servicing starts at S$46 for 2 units (S$23 per unit), and the S$20-per-unit rate begins at 3 units. Annual plans bundle 2, 3 or 4 visits a year. For current prices by unit count and what each servicing type includes, see our guide to aircon servicing costs in Singapore or the aircon page itself.

Urban Company’s aircon service in Singapore holds a 4.88 rating across 24,984 reviews and 121,000 bookings, and every technician is background-verified. You book an aircon repair in Singapore in the app — the price you see is the price you pay. If the fault is actually electrical rather than the aircon itself, book an electrician; for everything else around the home, there’s a handyman too.

Frequently Asked Questions

If you’ve been servicing your aircon regularly but still notice it’s not as cold as it used to be, the problem is probably not how often you’re servicing — it’s how thoroughly.

Most aircon servicing in Singapore cleans the front of the evaporator coil and calls it done. The back of the coil, where most of the dust, grime, and mould actually accumulates, gets left alone. Over time that buildup restricts airflow, reduces cooling performance, drives up your electricity bill, and shortens the lifespan of your unit.

FoamJet aircon servicing fixes this. It’s Urban Company’s standard service for every aircon job in Singapore, and it’s built around one principle: clean the whole unit, not just the parts that are easy to reach.

What Is FoamJet Aircon Servicing?

FoamJet is an advanced aircon cleaning method that uses high-pressure foam to deep-clean both the front and back of the evaporator coil, along with other internal components including the filters, drainage tray, and blower wheel.

The foam penetrates into the coil and breaks down accumulated dust, grime, mould, and bacteria — debris that builds up over months of use and that a standard wipe-down cannot reach. Once the foam has worked through the unit, it’s jet-washed away, taking the loosened debris with it.

The result is a unit that’s clean throughout, not just on the surface.

How FoamJet Servicing Works — Step by Step

Pre-Service Airflow Measurement

Before the technician touches the unit, they measure airflow using an anemometer. This reading is captured in the Urban Company app as a baseline — so you have documented proof of where your aircon started.

Inspection and Preparation

The technician inspects the unit’s condition — checking for signs of mould, drainage blockages, or anything that might indicate a deeper issue beyond routine servicing.

High-Pressure Foam Application

Foam is applied to the evaporator coil — front and back — as well as the filters, drainage tray, and blower wheel. The foam breaks down and lifts accumulated dirt, grime, and microbial buildup from surfaces that standard cleaning doesn’t reach.

Jet Wash and Rinse

The foam, along with all the loosened debris, is rinsed away thoroughly. You’ll see the dirty water on completion — Urban Company technicians show this as part of the proof-of-work process.

Post-Service Airflow Measurement

Once the unit is dried and reassembled, airflow is measured again. The before-and-after readings are both captured in the app, so you can see the actual improvement in airflow from a single service.

Why Standard Aircon Servicing Falls Short

Standard aircon servicing — the kind offered by most providers in Singapore — typically covers the air filters and the front-facing surface of the evaporator coil. It’s quick, it’s cheap, and it gives the appearance of maintenance.

The problem is what it misses. Dust and debris accumulate primarily at the back of the evaporator coil, where airflow pushes them over time. Standard servicing doesn’t reach this area. The buildup continues, cooling efficiency drops, and eventually you’re told you need a chemical overhaul — a more invasive and expensive process involving full dismantling and chemical treatment.

FoamJet servicing is designed to prevent this. By cleaning the whole coil at every service, it removes the buildup before it reaches the point where a chemical overhaul becomes necessary.

FoamJet Aircon Servicing Prices Singapore

For context, standard aircon servicing from most Singapore providers runs $30–$45/unit — and doesn’t include the back-of-coil cleaning, anemometer readings, or proof-of-work documentation that comes with every UC job.

If your unit has heavier buildup that servicing alone can’t address, chemical overhaul is available from $160 for 1 unit.

Book FoamJet aircon servicing →

What’s Included With Every FoamJet Service

Every Urban Company FoamJet aircon service includes:

• Full cleaning of evaporator coil — front and back
• Filter cleaning
• Drainage tray and blower wheel cleaning
• Before-and-after airflow measurement with anemometer
• Photos of coils before and after, captured in-app
• Dirty water shown on completion as proof of work
• Honest technician assessment — no hard-selling of additional services

How Often Should You Book FoamJet Servicing?

For most Singapore households, every 3 to 6 months is the right cadence. If you run your aircon most of the day — which is standard in Singapore’s climate — lean towards every 3 months.

An annual contract at $20/unit per service makes this easy to maintain without having to remember to rebook. You set the frequency — 2, 3, or 4 times per year — and Urban Company handles the scheduling.

For a typical Singapore home with 3 aircon units serviced 3 times a year, the annual cost works out to $180 — less than most households spend on a single chemical overhaul.

FoamJet Servicing vs Chemical Overhaul — Which Do You Need?

The honest answer: most units that end up needing a chemical overhaul got there because regular servicing was skipped or was too superficial to prevent buildup. FoamJet servicing done consistently removes the conditions that make a chemical overhaul necessary.

If your unit hasn’t been properly serviced in over a year, or if you’re noticing significantly reduced cooling despite recent servicing, a chemical overhaul may be the right starting point. A UC technician will assess honestly and tell you which applies — there’s no incentive to upsell you on a service you don’t need.