![]() ![]() Our survey helped to confirm this advice. ![]() Once the furnace is installed, maintain it regularly according to the manufacturer’s recommendations. Such calculations take into account the climate and the size, design, and construction of your house. #Concord 80 plus furnace parts manual manualTo be sure of correct sizing and a proper installation, choose a reputable contractor who will take the time to calculate your heating needs according to an industry standard such as the Manual J HVAC residential load calculation from the Air Conditioning Contractors of America. If ducts aren’t the right size, airflow can be noisy. Also, a larger replacement furnace might require larger ducts. That puts more wear on its components, wastes energy, and might cause the temperature to vary uncomfortably. A furnace that’s too large will cycle on and off more frequently. Initial cost is only one of the drawbacks of that strategy. Partly to avoid that possibility, the furnaces in most homes are larger than necessary. A furnace that’s too small won’t keep your house comfortable during extremely cold weather. The furnace’s specifications should fit your needs. More than 500 specialists in residential heating and air conditioning told us about their experiences installing and maintaining heating equipment. How do most people go about buying a furnace? First, they call contractors and ask for estimates. ![]()
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