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.

While your municipality may have its own regulations requiring pergolas or other structures to be a certain height above a fire pit, the standard recommendation is that the pergola should be at least 10 feet above the fire pit. A taller pergola allows the heat from the flames to dissipate before reaching the structure.

No, you should never leave a fireplace burning overnight or unattended during the day. While fireplaces are made to contain fires, fires can and do spread from fireplaces, so it’s crucial that you’re there to monitor them and put them out if needed. If you’re worried about putting out a fire before bed, stop feeding it fuel long before bedtime and actively put out the fire using your poker, a shovel, and some baking soda.

You should schedule a fireplace inspection at least once a year, per the National Fire Protection Association (NFPA). However, this is the minimum requirement even if you’re diligent with fireplace maintenance between uses. If you suspect your fireplace is malfunctioning, schedule one sooner to avoid fire hazards or the release of harmful emissions like carbon monoxide in your home.