Addition and/or Alterations - EZ PERMIT DUCTWORK & WARM-AIR APPLIANCES - For the installation of New Ductwork, Registers/Grilles/Diffusers, and Warm-Air Appliances as per attached standards. Deviations from these standards require submission of construction and site plans. Replace existing furnace and condenser only, in like and kind, using existing ductwork. We are increasing one section of trunk and some of the supply ducts in the basement only, tying back into the the runs going upstairs. The new ductwork in the basement will be exposed and tied into the existing runs going upstairs, no additional ductwork proposed throughout the house.