Keeping Your Cozy Nights by the Fire Safe and Sound

Was chatting with my neighbor yesterday, and he mentioned something interesting I hadn't thought about before. Apparently, older fireplaces (like mine, ugh) can be a real hazard if they're not checked regularly. He said that chimney liners can crack over time, letting heat or sparks escape into the walls - yikes. And here I was thinking my biggest worry was just remembering to open the flue before lighting up, lol.

Anyway, he also mentioned that newer fireplace doors aren't just for looks; they actually help keep embers from popping out onto your carpet or wood floors. Honestly never gave it much thought until now - always figured those doors were just decorative or to keep curious pets from getting too close.

I guess it's easy to overlook these things when you're used to having a fireplace around all your life. Now I'm wondering what else I've missed... anyone got more tips or interesting facts about keeping fireplaces safe?