what questions to ask when buying a furnace?
['What Are Your Heating Needs? ... ', 'What Is the Age of Your Current Furnace? ... ', 'How is Your Indoor Air Quality? ... ', 'What Brands of Furnaces Are Available? ... ', 'How Much Space is in Your Home? ... ', 'What Areas Need the Most Heat? ... ', 'What Fuel Type Do You Need? ... ', 'What Do You Want Other Than “Warm Air”?']