Aircon gas leaking issues? How to solve it?
Air conditioners rely on refrigerant gas to absorb heat and cool your room. When that gas starts leaking, the system loses its cooling power and efficiency. Many homeowners first notice the aircon not cold, but don’t realise the real cause is a refrigerant leak.
In Singapore’s hot climate, a leaking aircon quickly becomes uncomfortable and costly because the unit works harder while cooling less. Below are clear signs to help you identify an aircon gas leak early — and prevent major damage.
aircon gas top-up
1. Weak Cooling Even After Long Hours
One of the earliest warning signs is reduced cooling performance. The aircon runs continuously, but the room never reaches the set temperature.
You may notice:
- The air feels slightly cool but not cold
- Cooling takes much longer than before
- Temperature drops only at night
Many people mistakenly request aircon general servicing when the real problem is gas leakage. Cleaning alone will not fix cooling if refrigerant pressure is low.
Before doing an Aircon gas top-up, technicians from Letscool aircon and Services Singapore must perform leak detection. Otherwise, the gas will escape again within weeks.
2. Ice Forming on the Indoor Coil or Pipes
A refrigerant leak causes a pressure imbalance inside the system. This makes the evaporator coil freeze.
Look for:
- Ice buildup on copper piping
- Frozen indoor unit
- Water dripping after turning off (melting ice)
This often leads to aircon water leakage and ceiling stains in HDB flats or condos.
Daikin Aircon water leaking
Midea Aircon water leaking
Mitsubishi Aircon Water Leaking
Panasonic Aircon Water Leaking
To restore performance, the unit may require:
- Leak repair
- Gas refill
- Deep aircon chemical wash or aircon steam wash to clear moisture damage
If ignored, it can escalate into compressor failure requiring aircon compressor servicing.
3. Hissing or Bubbling Sounds From the Unit
Refrigerant escapes through tiny cracks in piping or joints. When gas leaks under pressure, it produces noticeable sounds.
You might hear:
- Hissing noise behind the wall
- Bubbling sound from the indoor unit
- Random airflow fluctuations
This is a strong indicator that you need professional aircon repair in Singapore rather than cleaning.
During inspection, technicians check flare joints, valves, and connectors — especially after recent aircon installation in Singapore.
Daikin Aircon Installation Singapore
Mitsubishi Aircon Installation Singapore
Midea Aircon Installation Singapore
Panasonic Aircon Installation Singapore
4. Aircon Light Blinking or Error Code Appearing
Modern air conditioners have sensors that detect abnormal pressure levels. When the refrigerant drops below a safe range, the system protects itself.
Common warnings:
- aircon light blinking
- aircon error code on display
- Compressor turning on and off repeatedly
Many homeowners panic and replace parts unnecessarily. However, the issue is often just low refrigerant pressure.
In some cases, replacing damaged aircon spare parts like valves or coils is required before refilling the gas.
5. Sudden Increase in Electricity Bill
When gas leaks, the aircon works harder to achieve cooling.
You’ll notice:
- Longer running time
- Higher electricity usage
- Room still warm
Without fixing the leak, repeated aircon gas top up wastes money. The system continues struggling every day.
Regular maintenance under an aircon service contract helps detect these issues early and prevents compressor overload.
6. Compressor Overheating or Shutting Down
The most dangerous stage of a gas leak is compressor stress. Refrigerant cools the compressor during operation. Without enough gas, the internal temperature rises quickly.
Symptoms:
- The outdoor unit is very hot
- Frequent shutdown
- Loud noise
- Aircon is not cold
At this point, urgent aircon compressor servicing is required. If delayed, the compressor may burn out — the most expensive repair in any air conditioner.
Sometimes, a full aircon chemical overhaul is needed to remove acid contamination caused by overheated refrigerant oil.
What Causes Aircon Gas Leaks?
Leaks don’t happen randomly. They usually result from:
- Poor aircon installation in Singapore
- Loose flare connections
- Corroded copper piping
- Vibration damage
- Manufacturing defects
- Renovation drilling is hitting pipes
Choosing providers offering the best aircon servicing in Singapore significantly reduces these risks.
Daikin Aircon Service Singapore
Mitsubishi Aircon Service Singapore
Midea Aircon service Singapore
Panasonic Aircon Service Singapore
When Should You Call a Professional?
Contact experts immediately if you see:
- Aircon not cold
- Aircon water leakage
- Aircon light blinking
- Aircon error code
- Ice on piping
- Hissing sounds
The team at Letscool aircon and Services Singapore performs pressure testing before recommending a gas refill. Proper diagnosis prevents repeat breakdowns.
Prevent Future Gas Leaks
Follow these maintenance tips:
- Schedule routine aircon servicing in Singapore
- Do yearly deep cleaning
- Inspect piping insulation
- Avoid cheap installation during aircon promotion
- Maintain a regular aircon service contract
Preventive care costs far less than compressor replacement.
Daikin aircon promotion
Mitsubishi aircon promotion
Midea aircon promotion
Panasonic aircon promotion
Final Thoughts
An aircon gas leak doesn’t just reduce cooling — it damages the entire system over time. The earlier you detect the signs, the cheaper the repair.
If your unit shows warning symptoms, don’t just refill gas. Proper inspection, repair, and maintenance by experienced technicians will keep your aircon efficient, reliable, and long-lasting in Singapore’s demanding weather.
Aircon servicing Singapore
Aircon installation
11 Mandai Estate,
#05-15 Eldix,
Singapore 729908
Mail ID: [email protected]
Service - Call: +65 9862 3678 (or) WhatsApp us: https://wa.me/6598623678
Installation - Call: +65 94507178 (or) WhatsApp us: https://wa.me/6594507178
#airconservice #airconservicesingapore #airconservicing #airconservicingsingapore #airconservicecompany #aircongeneralservice #aircongastopup #airconsteamcleaning #airconchemicalwash #airconchemicaloverhaul #airconrepair #airconrepairservice #bestairconsingapore #airconserviceprice #airconservicepricesingapore #commercialairconservicing #Letscool #airconwaterleakage #airconpromotion #airconpromotionsingapore2026 #airconspareparts #airconinstallationsingapore #airconinstallation #daikinaircon #mitsubishiaircon #mideaaircon #panasonicaircon #airconinstallationpromotion2026 #airconsingapore #cheapestairconsingapore #bestairconsingapore #sgaircon #airconditioningservice #aircondservicing #aircondcleaning #acfix #airconsg #servicingairconsingapore