One air conditioner repair is an inconvenience. Repeated failures usually point to a problem that has not been fixed, or to a system near the end of its life.
Common reasons
- Dirty filters: a clogged filter restricts airflow and makes the system work harder.
- Skipped maintenance: dirty coils and worn parts cause problems that a routine service can catch.
- Wrong size: an oversized unit turns on and off too often, while an undersized one runs constantly.
- Refrigerant leaks: topping up does not fix a leak, which needs to be found and repaired.
- Electrical faults: worn capacitors, contactors and loose connections are common causes of failure.
- Thermostat problems: a faulty or badly placed thermostat can cause erratic cycling.
- Blocked outdoor unit: leaves and plants reduce airflow around the condenser.
- Age: many central systems last roughly 10 to 15 years, depending on use and care.
Repair or replace?
Ask a licensed technician for the cause of each failure, not just the repair. Consider replacement if your system is old, repairs are frequent, or a major part such as the compressor has failed. Compare the repair cost against the price of a new system over its remaining life.
How to reduce breakdowns
- Check filters every month during heavy use.
- Book a professional service each year.
- Keep at least two feet of clear space around the outdoor unit.
- Do not set the thermostat far below the temperature you need.
Track filter changes and service dates with our Maintenance Tracker. If water is the issue, read why air conditioners leak.
