Carrier air conditioner runs but does not cool the room effectively

Safety: Turn OFF power before cleaning coils or opening panels.

• Step 1 – Clean or replace filter: Remove the indoor filter and wash or replace it according to Carrier's instructions.
• Step 2 – Clean indoor coil: Gently vacuum or brush dust from the evaporator coil. Use a foaming coil cleaner if heavily soiled.
• Step 3 – Clean outdoor coil: Rinse the condenser coil with a garden hose from inside out.
• Step 4 – Check room conditions: Close windows and doors, reduce heat sources (ovens, direct sun), and ensure all supply registers are open.
• Step 5 – Technician check: If cooling is still poor, have a Carrier technician check refrigerant charge and system sizing.