Furnace rattles or vibrates loudly when running.

Safety: Turn off power before tightening or adjusting components.

Steps to check:

• Tighten panels: Ensure all Luxaire furnace access panels are properly seated and screws are tight.
• Check blower mounting: Inspect blower housing mounting screws and brackets; tighten if loose.
• Inspect ducts: Look for loose metal ducts or flex ducts that vibrate against framing; secure with straps or hangers.

If vibration persists, a technician should check blower balance and motor mounts.