Kelvinator Dust Burn-Off on Heat Exchanger

Furnace emits a burning dust smell when first started for the season

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Possible Causes

Accumulated dust on heat exchanger and burners, Long period of inactivity, Dirty supply ducts

How to Fix / Troubleshooting

Safety first: If you smell a strong electrical burning odor or see smoke, turn OFF the furnace and investigate. A light dusty smell at first startup is usually normal.

  • Open windows: When first starting the Kelvinator furnace after months of inactivity, open a few windows to ventilate while dust burns off.
  • Replace filter: Install a clean filter to capture loosened dust.
  • Inspect for actual burning: Remove the blower door and look for melted wiring or scorch marks. If found, shut down and call a technician.
  • Duct cleaning: If the smell persists for days, consider having ducts professionally cleaned.
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Repair Difficulty

Very Easy 1/5
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