Difficult transition at wall register would be easy to frame and build with wood. This would be over 20' from the furnace, which is not "really" a furnace but an air handler with a hot water coil in it. No flame associated with it, temps below 160F. Total lenghth of transition about 18". Antique register, odd size to it.
2006-12-02 21:54:32 · 7 answers · asked by roadlessgraveled 4 in Home & Garden ➔ Do It Yourself (DIY)
If it is just a framed box you are wanting to build to adapt to the register, it should be fine. If you need to run 20' of this, run metal duct (round, buy at Home Depot, etc.) 6" for 100 CFM, 7" for up to 160 CFM, 8" for up to 200 CFM. Then you can make the box you are talking about.
Return ducts are commonly run as "chases" in houses, not using metal ducts, by using the framed openings behind existing walls or by using joist bays covered in flat metal turning it into a "duct".
It is preferable not to use the same as a supply, as the wood will dry out and the cold air in summer may cause mold or mildew to grow on the wood. It would probably be better to get some flat metal and fabricate a register box yourself.
2006-12-03 21:10:03 · answer #1 · answered by Obsean 5 · 0⤊ 0⤋
Seems alright to me.
You can give it a good soaking before erecting with fire resisting compounds like Pyroma or perhaps a liquid equivalent.
Since its length will change with temperature you might want something flexible on the finished side to stop the decor from damage?
Sounds like me, the antique bit?
2006-12-02 22:10:57 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Metal duct work is required for the plenum. Plastic flex duct is allowed anywhere else except in a crawl space.
2006-12-03 10:57:09 · answer #3 · answered by bearcat 4 · 0⤊ 0⤋
It would be easier and quicker just to get some 10'flex, a couple of collars and run it that way.
2006-12-03 11:42:02 · answer #4 · answered by BUBBA~THE~POOCH 3 · 0⤊ 0⤋
It doesn't matter what anybody on Yahoo Answers thinks.
Call your local Building Dept and ask an inspector.
2006-12-03 00:53:59 · answer #5 · answered by James H 3 · 1⤊ 1⤋
just go to a hvac shop and get the boot that you need
2006-12-03 14:25:12 · answer #6 · answered by hillbilly named Possum 5 · 0⤊ 0⤋
check local codes
2006-12-03 01:03:51 · answer #7 · answered by Anonymous · 1⤊ 0⤋