The answer to 'why is my heat pump short cycling' is that there are several common causes, including a dirty air filter, a refrigerant leak, a malfunctioning thermostat, or a problem with the compressor. Short cycling means the heat pump is turning on and off rapidly, which can lead to higher energy bills and reduced comfort in your home.
Short cycling is often caused by an issue with the heat pump's components or settings. A dirty air filter can restrict airflow and cause the system to overheat and short cycle. A refrigerant leak reduces the heat pump's ability to effectively transfer heat, leading to short cycling. Problems with the thermostat's settings or a malfunctioning thermostat can also cause short cycling. In some cases, an issue with the compressor or other internal components may be to blame.