Based on the expert guide from Schwantes Heating and Air Conditioning, several common issues lead to commercial HVAC system failure. Identifying these repeat offenders early can help business owners avoid emergency service calls and costly downtime.
According to the source, the most common causes of system failure include:
- Refrigerant leaks: These are identified as a top cause of service calls. Because handling refrigerants is regulated, these must be repaired by licensed professionals.
- Compressor burnout: This frequently occurs due to electrical faults, such as failing capacitors or contactors, which strain the motor until it overheats.
- Dirty evaporator coils: This issue restricts heat absorption and chokes airflow, leading to cooling inefficiencies and increased strain on the unit.
- Electrical failures: Faults in components like safety switches, safety circuits, and electrical connections can cause a cascade of issues if left unaddressed.
- Dirty air filters: This common neglect starves the unit of airflow, exacerbating other issues like compressor strain and coil fouling while accelerating general system wear.
- Mechanical wear and tear: Over time, failing belts, worn pulleys, or unlubricated bearings can lead to unusual noises and eventual system breakdown.
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