Kelvinator Window AC Low Cooling / Airflow or Refrigerant Issue

Kelvinator window AC (room AC) runs but does not cool effectively.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Dirty condenser or evaporator coils, blocked air intake or discharge, low refrigerant charge, failing compressor

How to Fix / Troubleshooting

Safety: Unplug the unit before cleaning.

Steps:

  • Clean filter: Remove and wash the front filter.
  • Clean coils: Remove the front grille and carefully vacuum or brush the indoor coil. Access the outdoor coil from the back and clean with low-pressure water.
  • Check installation: Ensure the rear of the unit is fully outside with unobstructed airflow.
  • Listen to compressor: When set to cool, you should hear the compressor start (a deeper hum). If only the fan runs, the compressor or capacitor may be faulty.

Technician tasks: Check refrigerant charge and compressor health if cleaning does not restore performance.

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Repair Difficulty

Medium 3/5

Required Part

Window AC Compressor
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