Arctic blasts across the country mean many wood-burning fireplaces — some of them long dormant — are being called into action.
Consider these safety and maintenance tips from experts at HGTV and Angie's List, which provides consumer reviews of service companies.
■ Wood-burning fireplaces and chimneys should be inspected annually, or after about 80 fires, by a certified chimney sweep.
■ Homes with fireplaces must have functioning carbon-monoxide detectors. "This is not negotiable — any fireplace or chimney that's not functioning perfectly can kill your family, either through fire or noxious fumes," said Mike Holmes of HGTV's Holmes on Homes.
■ Common problems are malfunctioning flues, damaged chimney liners and blockages from nesting critters. A chimney cap and a spark arrester can reduce risks.
■ Your chimney sweep company should be certified by the Chimney Safety Institute of America or the National Chimney Sweep Guild, says Angie's List founder Angie Hicks.
■ Avoid burning pine or sappy woods. Seasoned wood, dried for at least 12 months, will help reduce creosote buildup in the chimney. (If wood hisses, sizzles or foams when burned, it contains moisture.)
■ Before making a fire in a traditional fireplace, open the damper and crack open a window. Light a match, blow it out and watch the smoke to see whether it's properly going up the chimney, HGTV suggests.
■ Think twice about using the fireplace on gusty days, when opening a door can change room pressure enough to coat furniture with a layer of ash.
■ Place a non-flammable rug (available at fireplace-supply stores) in front of the fireplace so sparks won't damage your floor.
■ Don't burn a fire for longer than five hours.
■ To clean stains on glass doors: When the fireplace is cool, scrape off door deposits with a razor blade. Add liquid dishwashing detergent to a bucket of warm water, or a cup of vinegar to a gallon of water. Spray or sponge the cleaner on, then wipe away with newspaper. Or try glass cleaner from a fireplace store. Shine brass fireplace utensils with Worcestershire sauce and a toothbrush.
■ Fireplace coals can remain hot enough to start a fire for as long as three days, so wait at least that long before removing ashes, HGTV advises. Then, open the damper and crack a window so ash isn't drawn into the house. Wear a dust mask, and shovel ashes into a metal container; store it far from combustibles and wood floors. (Vacuuming ashes can leave you with a bigger mess.) During fireplace season, leave about an inch of ash at the bottom of the fireplace to act as insulation for your next fire.
■ Most wood-burning fireplaces can be converted to gas, Holmes said. Gas inserts are gaining popularity. "They are clean, safe, easy to use and install. I love them — I've got one myself," Holmes said. "Wood fireplaces are a lot of work, and wood can be expensive if you live in a city."
■ With gas logs, Hicks said, the flue will need cleaning probably only once a decade.