What is a common cause of compressor failure in HVAC systems?

Overheating due to inadequate cooling is a prevalent cause of compressor failure in HVAC systems because compressors are designed to operate within specific temperature ranges. When cooling is insufficient, whether due to a lack of refrigerant, restricted airflow, or any other reason that hampers the cooling process, the compressor works harder to meet the desired temperature. This additional strain leads to excessive heat buildup within the unit. Prolonged exposure to high temperatures can result in damage to internal components, such as the winding insulation or mechanical seals, ultimately leading to complete compressor failure.

While clogged air filters can restrict airflow and cause similar issues, their effects are often caught and addressed before leading to compressor damage. Excessive refrigerant levels can indeed harm the system but are typically less common than issues linked to overheating. Frequent cycling on and off can signify another underlying problem but does not directly cause a compressor to overheat as significantly as inadequate cooling does. Thus, inadequate cooling stands out as a critical concern for compressor reliability.