New furnace install , attaching plenum
#1
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New furnace install , attaching plenum
I have this new furnace and all the measure are between the old furnace and new one is good except for the height of the new furnace..it is 3 3/4 inches shorter... So it looks like I will need a small piece made ...in order to connect the plenum.
Should I have the new piece made so when it joines to the old plenum , it fits on the outside or the inside ..Is there such of a joint where the old would fit into a flange ...on the new one ...if that’s the case, the piece would have to be an exact measure..
if if I just fit the new piece up inside the old plenum ! How much of an overlap should I do..maybe a couple inches....thanks for info.
Should I have the new piece made so when it joines to the old plenum , it fits on the outside or the inside ..Is there such of a joint where the old would fit into a flange ...on the new one ...if that’s the case, the piece would have to be an exact measure..
if if I just fit the new piece up inside the old plenum ! How much of an overlap should I do..maybe a couple inches....thanks for info.
#2
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If metal you want it to be the same size. Joined by S and drive cleats.
Lots of examples but he asks for money: Ductwork Installation - Introduction
Lots of examples but he asks for money: Ductwork Installation - Introduction
#6
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Other thing to consider is to cut some metal off the bottom of the old plenum. Then you have more room to make a transition piece. And could fit canvas isolator.