Why Is My Air Conditioner Running But Not Cooling Properly?

Your AC can run without cooling due to a clogged air filter, blocked outdoor unit, incorrect thermostat settings, low refrigerant, a frozen coil, or duct problems. If airflow feels weak or warm in Boise or Nampa, these are likely causes.

Quick checks:

• Set thermostat to Cool and Auto.
• Replace a dirty filter (check monthly).
• Clear 2–3 ft around the outdoor condenser.
• Open all supply/return vents.
• If you see ice on lines, turn AC off, set fan to On to thaw, then call.

Updated: 2026-01-02 00:00:00

Need help in Caldwell, ID? Call (208) 738-4822 or book online.