Luxaire air conditioner runs continuously and rarely shuts off, even when the set temperature is reached.

Safety: Most checks are safe; avoid refrigerant work.

• Verify thermostat reading: Compare thermostat temperature to a reliable thermometer. If off by several degrees, recalibrate or replace the thermostat.
• Check for air leaks: Inspect around doors, windows, and attic access for significant air leakage that can increase load.
• Inspect ducts: Look for disconnected or leaking ducts in attic or crawlspace that may be dumping cooled air outside the conditioned space.
• Professional evaluation: If the system is properly sized but still runs nonstop, a technician should check refrigerant charge and overall Luxaire system performance.