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: Shut off the power to the furnace before removing blower compartment door to avoid injury from moving parts. A. ANNUAL INSPECTION The homeowner must have this furnace professionally inspected at the beginning of each heating season by a qualified heating contractor to ensure proper operation. 11 All installations and services must be performed by qualified service personnel. NOTICE: This furnace has been shipped from the factory with a permanently lubricated circulating air blower motor. Any m