Your AC is running but not cooling? Discover the top causes, repair costs, and when to replace.
When your air conditioner is running but the air is not cold, the problem lies in the refrigeration or airflow system.
Dirty filters, blocked vents, or ductwork issues prevent proper air circulation.
Low refrigerant from a leak means the system runs but cannot cool effectively.
A frozen coil blocks heat absorption. The system runs but produces little cooling.
If the condenser fan or compressor is not working, the indoor unit runs but cannot complete the cooling cycle.
A system too small for your home will run constantly but never reach the desired temperature.
| Repair | Cost Range |
|---|---|
| Filter replacement + duct cleaning | $50 – $500 |
| Refrigerant leak repair + recharge | $300 – $1,500 |
| Evaporator coil repair | $200 – $2,000 |
| Condenser fan motor replacement | $200 – $600 |
| Compressor replacement | $1,500 – $3,000 |
If your system runs constantly without reaching temperature and is over 12 years old, a properly sized new system will cool more effectively.
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