In heat pumps, common components that often break down first include:
Reversing valve: Controls heating/cooling mode switches
Compressor: Heart of the system, prone to wear
Capacitors: Electrical components that degrade over time
Fan motors: Subject to constant use and environmental stress
Refrigerant leaks: Can develop in coils or connections
Thermostat: Electronic failures or calibration issues
Contactor: Electrical switch prone to pitting and failure
Regular maintenance can prevent premature breakdowns. However, parts like capacitors and contactors may need replacement every few years due to normal wear and tear.