❄️ What Causes Frequent Aircon Gas Leaks?

Aircon gas does not get “used up”. If your aircon needs frequent gas top ups, it usually means there is a leak somewhere in the system.

Repeated gas leaks reduce cooling performance, increase electricity bills, and can eventually damage the compressor if left unresolved.

Here are the most common reasons why aircon gas leaks keep happening.

1. Poor or Aged Flare Connections

The copper piping joints (flare joints) are a common leak point. Over time, vibration, thermal expansion, or poor installation can cause the joint to loosen.

Signs:

• Cooling weakens after a few months

• Gas pressure drops repeatedly

• Oil stains near pipe joints

Solution: Reflare or tighten joints properly and pressure test the system.

2. Corroded Copper Pipes

In Singapore’s humid environment, copper pipes can corrode over time, especially if exposed to moisture or chemicals.

Common causes:

• Condensation dripping onto pipes

• Chemical cleaning residue

• Long term wear and tear

Corrosion creates tiny pinholes that slowly leak gas.

3. Improper Chemical Washing

If chemical washing is done too aggressively or without proper rinsing, it can damage copper coils and joints.

This may lead to:

• Coil thinning

• Micro cracks

• Gradual gas leakage

Chemical cleaning should always be done carefully and only when necessary.

4. Manufacturing Defects or Coil Fatigue

Some indoor coils develop leaks due to metal fatigue after years of operation.

Signs:

• Gas leak returns even after repairs

• No visible pipe leaks

• Cooling improves briefly after top up

In these cases, coil replacement may be required.

5. Vibration From Outdoor Unit

Loose mounting, worn rubber pads, or unstable brackets can cause excessive vibration.

Over time, vibration stresses copper pipes and joints, leading to cracks and leaks.

6. Incomplete Leak Detection

Topping up gas without identifying the leak only provides temporary relief.

Common mistake:

• Gas refill without pressure test

• No nitrogen testing

• No soap bubble or electronic leak detection

Without proper diagnosis, leaks will continue to recur.

How Sky Blue Aircon Fixes Gas Leaks Properly

At Sky Blue Aircon Engineering Pte Ltd, we do not simply top up gas. We identify and fix the root cause.

Our approach includes:

• Full leak detection

• Nitrogen pressure testing

• Flare joint inspection and repair

• Coil and piping assessment

• Correct gas refilling after sealing leaks

This ensures long term cooling performance and system safety.

💡 The Bottom Line

Frequent gas leaks are never normal. If your aircon keeps losing gas, it means something is damaged or improperly sealed.

Fixing the leak early prevents compressor damage and saves long term repair costs.

📲 Message us on WhatsApp at 9248 7291 or call 6556 4042

Sky Blue Aircon Engineering Pte Ltd keeping Singapore homes cool, efficient, and protected.