Goodman Continuous Operation / Inability to Reach Setpoint

Goodman air conditioner runs continuously and rarely shuts off

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Possible Causes

Undersized Goodman AC for home load, Dirty coils reducing capacity, Low refrigerant charge, Thermostat miscalibration or heat gain from location

How to Fix / Troubleshooting

Safety first: Turn off power before cleaning coils or opening equipment.

Steps to address:

  • 1. Verify thermostat setpoint: Ensure the thermostat is not set unrealistically low (e.g., 65°F in very hot weather).
  • 2. Replace filters and clean coils: As described in earlier entries, ensure both indoor and outdoor coils are clean and airflow is unobstructed.
  • 3. Reduce heat load: Close blinds, seal obvious air leaks, and limit oven/dryer use during peak heat.
  • 4. Check thermostat location: If the thermostat is in a hot hallway or near a heat source, it may cause extended run times.

When to call a professional: A technician can perform a load calculation, check refrigerant charge, and verify system capacity versus home requirements.

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Repair Difficulty

Easy 2/5

Required Part

Evaporator coil or thermostat
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