The Building & Fire Code Academy is conducting two-day courses to help heating tradespeople understand the 2003 International Mechanical and Fuel Gas Codes. Topics include general regulations, ventilation and exhaust, duct systems, chimneys and vents, appliances, and hydronic and gas piping. Remaining dates are May 3-4, Hoffman Estates, Ill.; and June 2-3, Traverse City, Mich. Call 800/884-4722 or e-mailbfca@bfcacademy.comfor more information.