Daikin furnace causes noticeable vibration and noise transmitted through the ductwork and structure.

Safety: Turn off power before tightening hardware or working near moving parts.

Steps to check:

• Level and support: Verify the furnace is level and fully supported on its platform or slab. Shim as needed.
• Tighten fasteners: Tighten all accessible screws on the furnace cabinet, blower housing, and duct connections.
• Flexible connectors: If rigid metal ducts are directly attached, consider having a technician install flexible connectors to reduce vibration transfer.
• Blower balance: If vibration persists, the blower wheel may be out of balance and should be inspected by a professional.