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Aircon gas leak detection and repair

We confirm the leak and find where it's escaping before any repair, so you stop paying for top-ups that don't hold. We’ll assess first, then confirm whether this is the right scope before you book.

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BCA-registered10,000+ jobs completed

What gas leak detection covers

Low refrigerant is a symptom, not the fault. Topping up without finding the leak means paying again in months. We confirm the gas is actually dropping, then track down where it's escaping, so the repair fixes the cause instead of refilling around it. Common situations where leak detection fits:

  • Gas dropped again within months

    Repeated top-ups mean refrigerant's escaping somewhere in the circuit.

  • System is completely empty

    A full loss needs the leak found before recharging, or the new gas escapes again.

  • A low-refrigerant code that keeps coming back

    A fault code cleared by a top-up and returning months later is the leak announcing itself.

Proving new piping instead? See pressure testing

When gas leak detection isn't suitable

Hunting for a leak isn't the first move for every weak-cooling complaint.

  • Pressure dropped slowly over several years

    There's still a leak, but at that rate finding it costs more than the occasional measured top-up.

  • Pressure is normal but cooling is weak

    The fault's more likely airflow, compressor, sensor, or control related, not a leak.

  • The leak point is already obvious

    Visible oil or ice at a specific joint often means we can quote the repair directly, without a full detection.

What you get

Stop repeat top-ups by proving whether the system's leaking and where.

  • Leak confirmed before repair

    You don't pay for leak repair when the gauges and tests show the system's holding.

  • Fault location identified

    Joint, valve, coil, or pipe run narrowed down before any repair is quoted.

  • Retest after repair

    After the fix, we pressure-test again and confirm it holds before recharging.

How gas leak detection works

Confirm the drop, check the easy points, then isolate the line. From your first message to a system that holds, here is what happens.

  1. You message us

    Tell us the symptom: repeated top-ups, cooling that fades a few months after a recharge, or a leak check after piping work. We come back with the likely causes.

  2. We assess on-site ($30)

    We put gauges on the system to confirm the charge is actually low, then soap-test the easy suspects, the flare joints and service valves. The $30 rules out work you don't need.

  3. We locate the leak

    If the accessible joints are clean, we pressure-test with dry nitrogen to find which line or section won't hold, the slow leaks a top-up just hides.

  4. We explain and quote

    Plain language: where it's leaking and what the fix takes, a joint reseal, a pipe section, or a coil. Nothing goes ahead without your say.

  5. We repair and retest

    The $30 visit fee is waived if you proceed. We fix the cause, pressure-test again to confirm it holds, then recharge with the correct refrigerant.

What we check before quoting

Leak detection is a sequence of methods, not a single test. We work from the cheapest, fastest check to the most thorough.

  • Confirm the drop

    Gauges tell us whether the charge is genuinely low and how far it's fallen, before we go hunting for a leak.

  • Check the accessible joints

    A soap test on the flare joints and service valves catches the leaks sitting at the connections we can reach.

  • Pressure-test to find the line

    If the joints are clean, dry nitrogen at controlled pressure isolates which line or section is losing pressure, the hidden leaks behind walls or in the coil.

  • Locate, then quote

    We only quote the repair once the leak's location and access requirements are clear.

Brand-specific gas leak repair

Choose the brand for its model scope, source-backed diagnostic evidence, parts path and repair-versus-replacement guidance.

From the field

  • Manifold pressure gauges connected to the outdoor unit during a leak-detection test.
    Gauges on the outdoor unit, confirming the charge is dropping before the leak hunt starts.

Workmanship warranty

We stand behind the repair we carry out, and we are straight about the part of the cover we do not set ourselves.

Labour

30-day workmanship warranty. If the same fault returns from our repair, we come back and the labour is on us, with no second diagnostic visit fee.

Parts

Parts carry the distributor's warranty for that component, so the term varies by part. We tell you both terms before you approve the work.

Leak detection case patterns

Diagnosis-led case notes, not generic service claims. Open the case if the symptom looks familiar.

See more cases

Frequently asked questions about aircon gas leak detection and repair in Singapore

How much does leak detection cost?
Quoted based on system size and access. It typically costs less than two gas top-ups, and it breaks the cycle of repeat charges. We'll quote before starting.
How long does leak detection take?
Confirming the charge with gauges and soap-testing the accessible joints is quick. A full nitrogen pressure test to isolate a hidden line adds 30 to 60 minutes depending on system size and how accessible the piping is.
What happens after the leak is found?
We quote the repair on the spot, typically a joint reseal, pipe section replacement, or coil replacement depending on location and severity. After repair, we pressure-test again to confirm the fix before recharging with the correct refrigerant.
Why not just keep topping up the gas?
Refrigerant isn't consumed in normal running, so a system that keeps losing it has a leak. Each top-up only buys a few months and adds up fast. Finding and fixing the leak once costs less over a year than repeated recharges, and it stops the cooling from fading again.

We cover all of Singapore. Find aircon services in your area.

Ready to get started?

Tell us what’s going on. Symptoms, setup, photos, anything we should know. We’ll assess and come back with the right next step.

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