Is your AC gas leaking? Even if the technician advises you, check it yourself to avoid significant expenses.
- bySherya
- 02 Mar, 2026
If the technician claims a gas leak after servicing your AC, don't trust him. You can identify whether your AC needs a gas refill by looking for some signs.

How to detect gas leakage from the AC?
Summer is here , and people are starting to remember their ACs. People get their ACs serviced in February and March to provide some relief from the heat and humidity from April to September and October. If you're currently getting your AC serviced and the technician tells you it's leaking or running out of gas, don't blindly believe him. You can use some telltale signs to determine if your AC has run out of gas or if the technician is trying to rip you off to line his own pockets.
Cooling will give an idea.
If the AC is cooling the room, it means it's not low on gas. When the gas runs out, the AC can no longer cool, but if it's cooling within its capacity, there's no need to refill it.
Check the coil
To determine if your AC is out of gas, check the coil. If ice forms on the coil after turning it on, it indicates that the AC is out of gas. If ice doesn't form, you don't need to refill the gas.
Oil will freeze on the pipe of the outer unit
If the technician says there's a gas leak in the AC, check the outer unit's pipes. A gas leak will cause a sticky oil-like deposit to form on the pipe. If there's oil buildup on the pipe, it's a sign of a gas leak and needs to be refilled.
The bubble test will also reveal
If the technician persistently claims a gas leak, you can diagnose it with a bubble test. Ask the technician to perform a bubble test at the leaking area. You can also do this yourself using a soap or detergent solution. If the pipe is leaking, bubbles will appear at that location. If no bubbles appear, the pipe is leaking.





