Is there any preventative maintenance required on furnaces?
Conditions that can affect the performance of your furnace can include: • Low gas pressure caused by a number of factors, including a malfunctioning regulator or low gas levels in the tank. This can only be tested by a qualified service technician. • Low voltage, which again can only be checked by a certified service technician. • Inadequate ducting. Have your dealer make sure the furnace has at least the minimum number of ducts and required duct area (min. sq. inches), excluding closeable outlets. Check for proper duct connections at the furnace or collapsed ducts. Make sure ducts are clean and clear of obstructions, and are as straight and tight as possible. • Restricted or insufficient air return: the return air passage should meet the minimum open square inches as specified for the particular model of furnace installed. It must not be blocked or restricted. Keep the furnace compartment clea of any materials that can block the air flow around the furnace. • Unauthorized alterations
