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Gas log maintenance is relatively simple, which is one of the best things about owning a set. There's none of the hauling and sweeping associated with real wood, and no sparks to worry about. Here are a few rules of thumb for keeping your gas log set well-maintained:
A certified professional installer should come out once a year to check your gas lines, valves, connections, and safety pilot assembly, especially if you use your gas logs often. The Hearth, Patio, and Barbecue Association (HPBA) also recommends that you have your chimney inspected and cleaned once a year to make sure that soot buildup is not preventing your gas log set from being properly vented.
Gas logs don't need much cleaning, but if you want to make them look like new, first make sure they are turned off and are not hot to the touch. Then brush your gas logs with a soft-bristled brush or a duster to remove any dust or dirt. Do not remove your gas logs from the fireplace to clean them - leave them in their installed position. Never use water or any other solvents to clean gas logs.
Most service and repairs, such as to a broken valve, leaky gas line, or a burner that is producing soot or carbon monoxide should be done by a certified professional. However, if you simply need new embers or other decorative elements, those you can order and place yourself.