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Not all gas fireplaces need a chimney. If you install a ventless gas fireplace, it will release low levels of combustion byproducts back into your living space (instead of pushing them outside through a chimney or vent). Ventless fireplaces burn fuel efficiently, so the emissions are minimal—but they could bother people with allergies or respiratory issues.

Modern wood-burning stoves are very effective, reaching around 80% efficiency. That’s because models built after 1988 are designed to meet standards set by the U.S. Environmental Protection Agency to operate more efficiently and produce less air pollution. If you have an older wood stove, it may not be as efficient.

For most brick cleaning jobs, including fireplace bricks, use a masonry sponge and a gentle cleaner. A simple solution of equal parts water and vinegar, or a few drops of dish soap in a bowl of water, can effectively remove grime. For tougher stains, you can use a dedicated masonry or fireplace cleaner. It is crucial to wet the bricks thoroughly with water before applying any cleaning solution to prevent the brick from absorbing it, and to rinse the surface completely afterward. Harsher cleaners containing bleach or ammonia should only be used as a last resort, and they should never be mixed together.

Wood is classified as either hardwood or softwood. For firewood, hardwoods are generally the best choice as they tend to burn longer, hotter, and produce less smoke than softwoods. Recommended hardwoods include oak, hickory, maple, cherry, ash, beech, birch, elm, and walnut. Oak is a particularly good option as it's widely available, slow-burning, and doesn't produce much smoke or sparks. Some woods, like oak, hickory, and cherry, also emit a pleasant scent. It is best to avoid softwoods such as eucalyptus, poplar, and willow, as they create a lot of smoke and have a high moisture content that makes them difficult to light and burn efficiently.