AC Direct - FAQ's - System Selection

Gas Furnace System Selection :
Do you provide installers for my purchase? Can I install my gas furnace myself? My service tech told me that higher efficiency products break down more frequently. Is this true? Can I install my new gas furnace in my attic? I currently have gas heat but because of the recent increases in gas rates would it be advisable to switch to electricity? I see the terms "upflow", downflow", and "horizontal" used when describing furnaces and air handlers. What does this mean? Should I install a gas furnace or a heat pump? Which is more efficient: A heat pump or a furnace? Do all furnaces use the same type of "chimney" or flue? Are your furnaces compatible for use with propane (LP) gas?? Is a higher efficiency furnace always better? What does the "variable speed" feature of a gas furnace mean to me? What does the "two stage" feature of a gas furnace mean to me? What is the highest efficiency furnace you offer? Where can I get more detail and specs for the equipment I am interested in?
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