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Thanks a million for your feedback. You're right on the money with that. I did hire an HVAC acoustician and he designed these transitions from round to a large rectangle (with a gentle 15 degree...

Thanks to both of you (I'm new to this), and for your patience. I just did my calcs and the area of my 14" square main duct (16" OD w/ 1" liner) is 196 sq. in. The four 6" (8" OD, with 1" liner)...

I'm framing out a space and am trying to plan for chase space for duct work. This is a situation where a 600cfm fan is exhausting warm room air; there is also fresh makeup air that will get drawn in...

I don't have a floor drain, but could potentially plumb a drain line out the daylight side of the basement for gravity flow. I might borrow my buddy's dehumidifier (a smaller kind) and see how it...

The Santa Fe certainly looks like a champ. One thing is that the room is only about 400 sq. ft. Now I did mention that when it is not in use, that I could have the doors to the rest of the...

Hello. I'm building a recording studio (mostly for listening to and editing music) that is 1/2 underground (daylight basement) in Seattle. It will be very air tight when in use with all the doors are...