Indoor leaking usually follows three paths: drain blockage, freeze-thaw behavior, or condensation routing issues. Here is how to read the pattern before committing to scope.
Note your answers to these three questions. They take 30 seconds and will point you to the right fault path.
Most common · Usually minor
Sludge or biofilm buildup blocks the drain path. Water backs up and drips from the indoor unit.
Watch out: Gas work will not solve a pure drain obstruction pattern. Confirm drain behavior before approving unrelated scope.
Intermittent bursts · Needs diagnosis
Unstable coil temperature behavior forms ice, then meltwater releases in bursts instead of a steady drip.
Watch out: Treating every leak as a simple drain issue can miss the freeze trigger and lead to repeat leakage.
Less common · Needs diagnosis
Condensation travels incorrectly when routing geometry or insulation conditions are off, creating hidden drips.
Watch out: Replacing major components without confirming water-path behavior can add cost without solving recurrence.
Water can travel from nearby wall or ceiling pathways and appear near the indoor unit, especially during monsoon periods. This can mimic an aircon leak even when the drain path is still functioning.
If this is the case we will tell you on-site before recommending any aircon repair.
| Finding | Next Step |
|---|---|
| Steady runtime drip with clear drain-block pattern | Clear drain path and retest drainage behavior |
| Burst leakage with weak cooling or icing signs | Diagnose freeze trigger before final scope |
| Moisture shifting along trunking or wall | Inspect routing, insulation, and slope conditions |
| Pattern follows rain more than runtime | Advise on building-moisture pathway, not FCU fault |
| Results unclear on first visit | Retest under normal runtime and weather conditions |
No disassembly needed. Just observe:
The more specific you are, the faster we point you to one next step.
These are not routine leak faults. These are safety issues.