Short answer: it depends on what’s causing the leak, and continuing to use it can make the underlying problem worse even if nothing looks urgent.
When It’s Usually Safe to Keep Using It (Briefly)
If the leak is a slow drip from a blocked drain line, the unit is still cooling normally, and there’s no water near any electrical outlets or wiring, you can typically keep using it for a short period while you arrange a repair. This is the most common cause of aircon leaks in Singapore, and it’s not an immediate safety issue, though it will keep getting worse.
When to Switch It Off Immediately
Turn the unit off and stop using it if water is dripping near an electrical socket or the unit’s control board, if the leaking has suddenly gotten heavier, or if you notice the unit tripping the circuit breaker. Water and electricity are a genuine hazard together, and this isn’t something to wait out.
What’s Actually Causing the Leak
Blocked drain line. The most common cause. Dirt and debris build up in the drainage system over time until water backs up and drips instead of draining out properly. A chemical wash clears this.
Dirty air filter. A clogged filter can cause the coil to freeze, and when it thaws, it drips more water than the drain pan can handle. Regular servicing prevents this.
Low refrigerant. Low gas can cause the coil to freeze similarly to a dirty filter. If this is the cause, it needs a proper leak check, not just a top-up. See our gas top-up guide for why the leak matters more than the refill.
Incorrect installation. If the unit was installed without the correct tilt or drainage slope, water won’t drain properly regardless of how clean the unit is. This needs a technician to correct, not a repeated clean.
Why You Shouldn’t Just Ignore It
Left alone, a leak damages the ceiling or wall beneath the unit, and the underlying cause, whether it’s a blocked drain or low refrigerant, doesn’t fix itself. What starts as a minor drip becomes a bigger repair the longer it’s left, and in the meantime, you’re paying more to run a unit that isn’t cooling as efficiently as it should.
What to Do Next
If the leak is minor and you’re not near any electrical components, you can keep using the unit briefly while you book a repair. If it’s near electrics, has gotten worse suddenly, or you’re not sure, switch it off and call us. WhatsApp a photo of the leak and we’ll advise before you book anything.
FAQs
Is it dangerous to run an aircon that’s leaking water?
Only if the water is near electrical components or the leak has suddenly worsened. A slow drip from a blocked drain isn’t an immediate hazard, but it should still be fixed.
Will the leak stop on its own?
No. The underlying cause, usually a blocked drain, dirty filter or low refrigerant, needs to be addressed directly. It won’t resolve itself.
Can I fix a leaking aircon myself?
Clearing a visible external drain blockage is sometimes possible, but anything involving the unit itself (filters, refrigerant, installation) should be left to a technician to avoid making it worse.
How fast can you fix a leaking aircon?
Same-day slots are available across Singapore. WhatsApp us a photo and description of the leak and we’ll advise before you book.
