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Installing a spark arrestor on your home’s chimney is an essential task. It reduces fire risk and ensures your chimney is compliant for insurance and building code purposes. Not having a spark arrestor could invalidate your home insurance or cause snags when it comes to a house sale.

Yes, a faulty or broken light switch can be a serious fire hazard. Malfunctioning switches often result from loose wiring, exposed connections, or other electrical problems that can cause overheating or sparking. Warning signs include crackling, popping, or hissing sounds when you flip the switch, which indicates live electricity that could ignite nearby flammable materials. If you suspect your light switch is faulty, immediately turn off the power at the circuit breaker and contact a qualified electrician to remedy the issue.

The damper, located just above the firebox, can open or close the chimney flue. The damper should remain closed unless there’s a fire burning in the fireplace. Closing the damper prevents energy loss through the chimney and cold air from seeping into the home during the winter. Opening the damper helps maintain airflow when there is a fire and prevents smoke and gases from venting into the house.

Depending on who’s doing the estimating, about 22,000 to 25,000 chimney fires happen each year in the United States. Given the fact that millions of Americans have fireplaces (and chimneys), that means chimney fires aren’t exactly common—but they’re not rare, either. Since they’re so dangerous, it’s important to take precautions to prevent them.