Get a chimney check-upHave a professional chimney sweep clean/inspect your active or decorative chimney. Professionals should also check the chimney flue and cap for cracks or leaking. Ron Gibbs, president of House Doctors Handyman Service (www.housedoctors.com), says the pros have the right equipment to get the job done in a couple of hours. "If you do it yourself, it'll take you more than that," he says.