What is the average cost to replace ductwork?
What is the average cost to replace ductwork? The average cost to replace ductwork is $1,400 to $5,600, depending on the home's size. Air duct replacement costs $25 to $55 per linear foot or $270 to $500 per duct for a crawl space, attic, or basement. New ductwork installation costs $2,400 to $6,600 for a house without HVAC ducts. Can I replace ductwork myself? To answer the question of whether or not you can replace or install your own ductwork, I'd say it is possible but that I highly recommend enlisting the help of a heating, cooling, and ductwork expert....