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How Long Does an Aircon Last in Singapore?

There is a typical lifespan range for residential aircons in Singapore. Whether your unit reaches the lower or upper end of that range comes down to how it was maintained.

What the Typical Lifespan Range Means

Most residential aircons in Singapore start showing significant faults as they age. Some fail earlier. Some last longer. The range reflects real variation in use, maintenance, and environment.

Units at the lower end of the range usually ran long hours, were serviced inconsistently, or operated in coastal or dusty environments. Units at the upper end were serviced regularly and used moderately.

The compressor is usually the limiting factor. When it fails on an old unit, replacement is often the better decision over repair.

What Shortens Aircon Life

Infrequent servicing is the biggest factor. Coil buildup makes the compressor overwork. That extra load causes wear that shortens the compressor's lifespan.

Long daily run hours put more cycles on every component. A unit running continuously ages faster than one used moderately.

Coastal environments expose the outdoor unit to salt air. That corrodes the condenser fins and outdoor unit casing faster than in inland locations. If you live near the sea, check the outdoor unit regularly for corrosion.

What Extends Aircon Life

Regular servicing on a consistent schedule keeps the coil clean and the drain clear. This is the single most effective thing you can do to extend the unit's life.

Keeping the outdoor unit clear of obstructions helps the condenser breathe. A blocked outdoor unit traps heat and forces the compressor to work harder.

Fixing small faults early prevents them from becoming compressor-level problems. A failed capacitor that is ignored can damage the compressor motor it supports.

Signs the Unit Is Nearing the End

Recurring faults are the clearest signal. If you have repaired multiple separate faults within a short period, the unit is likely in a general decline.

Rising electricity bills without a change in usage patterns can mean the compressor is losing efficiency. Old refrigerant systems degrade over time and draw more power for less cooling.

Weak cooling that does not improve after servicing — when refrigerant levels check out and the coil is clean — points to a compressor that is no longer performing at rated capacity.

Signs the Unit Is Nearing the End summary table
SignWhat It Suggests
Multiple repairs in a short periodGeneral system decline
Weak cooling after servicing and gas checkCompressor degradation
Rising bills, same usageEfficiency loss — old system
Recurring refrigerant lossWorn pipework or compressor seals
Loud rattling from outdoor unitCompressor or fan motor wear

How To Get More Life From an Older Unit

If your unit is ageing but still cooling well, a consistent service schedule can extend its useful life. The key is not letting buildup accumulate and catching small faults before they compound.

Fix faults promptly. A minor electrical fault left unattended can damage a part that costs much more to replace.

If a technician recommends a major repair on an older unit, ask for a realistic estimate of remaining lifespan. That answer should factor into your decision.

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