FAQs : Split Systems Poor Cooling or Heating performance (Indoor unit)

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Is the air filter dirty?

Is the air conditioner's intake grille or outlet port blocked?

Did you adjust the room temperature settings (thermostat) correctly?

Is there a window or door open?

In the case of Cooling operation, is a window allowing bright sunlight to enter?

In the case of Cooling operation, are there heating apparatus and computers inside the room, or are there too many people in the room?

Is the unit set for SUPER QUIET operation?