How long does an air-conditioning unit last?
Typical
12 years
Range
10–15 years
A split-system air conditioner typically lasts 10–15 years. Like heat pumps (they’re the same machine in reverse) the compressor sets the lifespan; filters and refrigerant checks set whether it gets there.
What decides it
- Cleaning filters monthly in season
- Professional refrigerant and coil check every year or two
- Coastal corrosion on the outdoor unit
When to replace rather than repair
Compressor or major refrigerant-circuit failure outside warranty usually means replacement; everything else is serviceable.
Typical ranges from manufacturer guidance and industry surveys — individual machines vary with use and care. General information, not advice on a specific appliance.