An air conditioner that runs continuously without ever shutting off is usually struggling to reach the target temperature set on your thermostat due to environmental, mechanical, or sizing issues. Common causes include a severely dirty air filter restricting airflow, low refrigerant levels from a leak that robs the system of cooling capacity, dirty condenser coils that prevent heat release, or leaky ductwork that allows cooled air to escape into unconditioned spaces. Additionally, on exceptionally hot and humid days, an undersized air conditioning unit will run non-stop because its cooling capacity cannot match the immense heat load entering the home. If this continuous running persists during moderate weather, a professional inspection is required.
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