When your aircon stops feeling cold, it’s easy to assume the gas is low. However, low gas usually means there is a leak, and this can lead to bigger problems. Because of this, it helps to check for signs early. Fortunately, you can confirm most symptoms without opening the unit. These simple checks will help you understand what’s happening and decide when to call a trusted aircon servicing Singapore specialist.
1. Warm Air Comes Out Even at a Low Temperature
A common sign of low gas is warm air. Although the fan may feel strong, the air is not cold. This often happens when refrigerant levels drop.
What you can do:
Set your aircon to 16–18°C.
Wait a few minutes.
If the air stays warm, your aircon may have a gas issue.
This is one of the most searched symptoms in Singapore for “aircon not cold Singapore.”
2. Ice Forms on the Copper Pipe Outside the Unit
Low gas can cause the outdoor copper pipe to freeze. As a result, you may see frost or ice on the pipe.
How to check:
Look at the outdoor compressor while the unit is running.
If you see ice, it’s a strong sign of a refrigerant leak Singapore.
This is one of the clearest clues you can observe without touching or opening anything.
3. You Hear Hissing or Bubbling Noises
Another sign of low gas is a light hissing sound. This usually indicates a leak somewhere along the system.
To check:
Stand near the indoor unit.
Listen while the aircon is running.
If you hear hissing or bubbling, it may be escaping refrigerant.
Because gas does not evaporate on its own, any sudden noise should be taken seriously.
4. Your Room Takes Much Longer to Cool
If your room used to cool quickly but now takes much longer, your aircon may be losing gas. Since Singapore is very humid, low gas makes cooling even harder.
What to look for:
A room that used to cool in 10 minutes now takes 30 minutes.
Cooling feels slow even at maximum settings.
This is a common reason homeowners search for “how to check aircon gas Singapore.”
5. Your Electricity Bill Increases Unexpectedly
When gas levels drop, your aircon works harder. Therefore, your electricity bill may increase even if your usage stays the same.
What to review:
Compare your electricity bill over the last 2–3 months.
If the bill jumps, the aircon may be using too much power.
Many Singaporeans look for answers under “aircon repair Singapore” after seeing this issue.
6. Water Leaks from the Indoor Unit
When gas is low, the evaporator coil can freeze. After it melts, the excess water may overflow and leak from the unit.
Check for these signs:
Water dripping from the front panel
Wet stains on the wall
Sudden water puddles under the unit
If you see these symptoms together with weak cooling, contact an aircon technician Singapore immediately.
Important Reminder: Low Gas Means There Is a Leak
Aircon refrigerant never “runs out.”
If your aircon gas is low, there is a leak. Because of this, topping up the gas without repairing the leak will only give temporary results. Eventually, the problem returns — sometimes worse.
This is why proper aircon leak repair Singapore is important.
What You Should Do Next
If you notice any of the signs above, don’t wait. Low gas can damage your compressor, which is the most expensive aircon part. Instead, get a proper diagnosis before more issues appear.
Book a Professional Gas Check With Lion City Aircon
At Lion City Aircon, we specialise in accurate gas level checks, leak testing, and aircon gas top up Singapore. Our team handles both R32 and R410A gas, and we provide clear, honest assessments before doing any work.
✔ Advanced leak detection
✔ Reliable gas top-up service
✔ Fast and affordable servicing islandwide
✔ Trusted aircon specialists in Singapore
📞 Call us at +65 8818 5781
🌐 Book your service online: lioncityaircon.sg
Keep your aircon cold, efficient, and long-lasting — even in Singapore’s hot and humid weather.
Add Your Heading Text Here
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Add Your Heading Text Here
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Add Your Heading Text Here
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Add Your Heading Text Here
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
