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Correct duct size

Servicewiz_3
Member Posts: 40
I am currently working on a job that appears to have the supplt & return ducts chocked down considering the size of the unit.Can I get the name of a good website or a rule of thumb when it comes to CFM & suitable duct size.thanks in advance for the help!!!!!!!!
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Comments
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Ductulator
Get yourself a good Ductulator. I have been designing duct with mine for years.0 -
Ductulator's
Also track down a flex duct Ductulator for flex duct.0 -
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Duct sizing
Hi TonyS. I like that HandBook way of looking at ducting,thanks .There is a lot of 8" high supply trunks in residential. But, on the return duct sizing we try for .08"w.c. depending or .06"w.c. depending. Our returns are larger than our supplies.0 -
Your welcome Techman
I use that book when I am coming out of boiler mode. I find as I get older I still have a good memory except its alot shorter LOL0 -
TonyS
I just looked at your photo in the "contact user" section . I have two questions , one personal and one business. Business first , Is she your helper ? Now personel , Where do you keep the pipe wrenches? LOL ,with you I hope!!!!!!!!!!!!0 -
Thanks Tony.
That is a mighty handy cheat sheet. I feel your pain. Things don't come out of the old Noggin' as fast as they used to.0
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