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All brands · Air conditioner troubleshooting

Poor cooling

What is going on

Possible causes and checks for: poor cooling.

Likely causes

  • Low charge/leak, stuck compressor, inefficient compressor, clogged refrigerant circuit, dirty coils/filter

Check in this order

  1. Install gauges (piercing valves if no ports), compare to Fig 31-21 conditions
  2. Find/repair leak before recharge
  3. Replace compressor on site or in shop. p.843 [817]

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Source: General HVAC service practice — verify per model. Written in our own words; check the manual for your exact model.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.