If your AC is running but not cooling, it usually points to a mechanical or airflow issue. Common causes include a dirty air filter, low refrigerant levels, or a malfunctioning thermostat. Sometimes the system may have power, but the compressor, evaporator coil, or condenser coil isn’t working properly. Clogged air ducts, frozen coils, or blocked outdoor units can also prevent your air conditioning system from delivering cold air. These issues reduce system efficiency and strain the unit, often leading to higher utility bills or breakdowns if left unaddressed.

Rancho Bernardo Heating & Air provides fast, accurate diagnostics for AC problems like these. We offer 24/7 emergency repair services across Rancho Bernardo and surrounding areas. Our licensed technicians inspect all key components and resolve issues such as electrical faults, refrigerant leaks, and airflow blockages. Backed by upfront pricing and a 1-year repair guarantee, we make it easy to restore your comfort quickly. If you're asking, "Why is my AC running but not cooling?", call (858) 609-0970 or schedule a service today.