What efficiency issue can arise from excessive cycling of a heat pump?

Excessive cycling of a heat pump can lead to increased wear on its components. When a heat pump frequently turns on and off, it puts strain on various parts such as the compressor, relays, and fans. This constant starting and stopping disrupts the normal operation and can result in overheating or overcooling, which can further escalate wear and tear.

Components like the compressor can particularly suffer from this cycling because they are designed to operate efficiently when running continuously for extended periods. Frequent cycling can also lead to insufficient lubrication and increased friction, which might reduce the lifespan of these parts and ultimately lead to premature failure.

In contrast, options that suggest lower installation costs, improved air quality, or an extended system lifespan do not correlate with the negative effects of excessive cycling. Instead, they highlight outcomes typically associated with proper maintenance and optimal system operation rather than the problems caused by inefficient cycling practices.