Furnace or nearby area smells like burning dust at the start of the heating season.

Note: A mild burning-dust smell is common for the first few cycles each season. It should dissipate quickly.

• Step 1 – Run furnace: Allow the furnace to run for 20–30 minutes with a few windows slightly open to ventilate.
• Step 2 – Inspect and clean: With power off, vacuum dust from accessible areas in the blower compartment and around the burners (do not disturb burner alignment).
• Step 3 – Replace filter: Install a clean filter to capture additional dust.
• Step 4 – If smell persists: If the odor is strong, chemical, or persists beyond a few hours of operation, shut down the furnace and have a technician inspect for electrical overheating or other issues.