What could potentially harm the compressor in an HVAC unit?

Low refrigerant levels can potentially harm the compressor in an HVAC unit because the compressor relies on refrigerant to operate effectively and efficiently. When refrigerant levels are low, it can cause the compressor to run hotter than normal due to the lack of the necessary fluid to absorb heat from the system. This overheating can lead to increased wear and tear on the compressor's components, potentially resulting in failure. Insufficient refrigerant also diminishes the system's overall cooling capacity, causing the compressor to work harder to maintain the desired temperature, further risking damage.

In contrast, maintaining a consistent voltage supply ensures that the compressor receives the necessary power without fluctuations that could lead to electrical malfunctions. Regular maintenance checks are beneficial for identifying potential issues before they escalate, while proper insulation helps to maintain system efficiency by preventing heat loss. Each of these factors supports the proper functioning of an HVAC system, unlike low refrigerant levels, which directly contribute to compressor damage.