Hvac duct cost
Most common types of Duct-work to most people are a bunch of confusing tubes in the walls, floors and ceilings of your home or business,which is attached to plenum from your air conditioning evaporator that distributes air throughout the house ,or business. All air conditioning duct systems has to have return ducts to circulate the air through out the areas that it years ago a gap under each bedroom door sufficed , or a grille but modern day code requires return ducts lager than supply ducts.
So having duct work done is now twice the cost from 10 years ago when returns weren’t a big deal. It can cost you per linear foot or per drop depending on whom you deal with and the agreement you make between 20 to 50 dollars per sq ft or 120-150 per drop that can also vary depending on types of material used,a combination of fibrous and flex is the cheapest way to go under 10tons.