I’m looking at two competing bids for a complete HVAC upgrade. One contractor is bidding 30 gauge ductwork and the second 26 gauge. I’ve read that 30 gauge is too thin to be used in residential ductwork. What’s the opinion of the professionals?
Just to be clear, there are other differences in these proposals to be evaluated and ductwork gauge is just one item. I’m just trying to rank the severity of this difference.