For gas fireplaces, use a fireplace glass cleaner and a soft cloth—never ammonia-based products, which can damage the glass. Make sure the fireplace is completely cool before cleaning. If your glass keeps getting cloudy, it may be a sign of improper combustion or ventilation.

For wood-burning fireplaces, use a wood stove glass cleaner to remove soot buildup. For tough spots, dip a crumpled newspaper in a bit of ash and gently scrub—it acts as a natural abrasive. Keeping your fire burning hot and using dry, seasoned wood will help reduce buildup over time.