When your air conditioning system runs continuously but fails to reach the target temperature set on your thermostat, it indicates that the unit's cooling capacity is being overwhelmed by exterior heat gain or hindered by mechanical inefficiencies. Common causes include a severely clogged air filter that chokes airflow across the indoor coil, dirty outdoor condenser coils that prevent proper heat rejection, or low refrigerant levels from a leak that severely reduce cooling efficiency. Additionally, extreme outdoor heat waves, leaky ductwork, or poor home insulation can introduce more heat into the home than the system can remove. You can troubleshoot by replacing dirty air filters and clearing debris from the outdoor unit. You can verify resolution when the system's supply air feels crisp and indoor temperatures begin dropping steadily.
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