duct

Wondering on this AirEase furnace which circuit to wire my duct booster fan to. The fan is a 6” round 120v, 0.5 amp draw. I’ve included the wiring schematic.

Hi all, back to get advice on another part of my house with HVAC issues. Thanks for all the previous help -- it all worked out great so far (installed mini split in sunroom)! We have a large finished room over our garage. Details on this space: - 33' long x12' wide - sloped ceiling from...

Hey everybody, here's something I didn't expect. I opened a vent in the bedroom, because it's had a bit of a smell. It comes and goes. Stuck my phone in to take a photo and realized its wood! The bottom of the image is actually the metal duct work. I can't seem to find any opening around...

The hood duct needs to run through kitchen ceiling and vent out in a wall (not roof). My joists are 2 x 8 with the ceiling drywall dating back to the 1950s. What is the max duct diameter I can install in my joists space? Is there any clearance (air gap) consideration between the pipe and joists...

I have an existing 8" sheetmetal branch line off an (approximately) 18" trunk from my air handler. I need to replace it to 10" to better serve the 1/3 of the 1450sf house this line handles. Currently the air temperature is consistent throughout the house except for this under-served area. My...

In remodeling my bathroom I had to convert a 6"x6" square duct underneath the floor joists in the basement to flex so I can get around my new toiler drain. I cannot for the life of me find a 6"x6" square to 6" round transition anywhere. Do I need to fabricate one myself? I don't know what to...

Helping a friend who has a 1-foot hole in the plenum of her forced air heating system. I haven't been under the house, but a few estimators have for rodent invasion and crawl space cleanout/vapor barrier replacement and re-insulation (both are trashed). UPDATE -- here are two pix I was sent by...