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ac install colonial

i am doing a ac job in a colonial style 2 story house. i want to get a supply duct from the attic to 1st floor living room ceiling through the 2nd floor bedroom . i am undecided whether to just come through 2nd floor corner and boxing it in. which this is a strait shot run, could i come down thru the 2nd floor closet and go into 1st floor bathroom/laundary room and take out fire stop and get into living room ceiling some how for the sake of a corner duct to be boxed in masterbed room. i hope this makes sense. is there a 90 boot to do this, to gofrom square register to a duct to go in ceiling joists.

Comments

  • Eugene SilbersteinEugene Silberstein Member Posts: 1,380
    Straight Shots

    The straighter the duct run, the better. Addition elbows to any duct run greatly affects the operation of the air distribution system. Adding an elbow to a duct run can have the same effect as adding an additional 10 to 90 feet of straight duct to the run, depending on the elbow used.
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