Furnace emits a burning dust smell when it starts, especially at the beginning of the season.

Safety: A light burning smell at first startup can be normal. If the smell is strong, acrid, or accompanied by smoke, shut off the furnace and investigate.

Steps to reduce odor:

• Clean around furnace: Vacuum dust and debris around the Luxaire furnace and return air grilles.
• Replace filter: Install a clean filter before the heating season.
• Run furnace: Allow the furnace to run for 30–60 minutes with some windows slightly open to clear the smell.

If the odor persists or smells like burning plastic or wiring, contact a technician.