In working around this house I just moved into, I have gotten around to sealing my ducts (not all the way done)and most of the plenum. All this is located in the crawl space with the furnace upstairs in a closet. Additionally after some years it appears, I replaced three flex ducts that were just laying on the ground in the crawl unconnected.
Now I have a serious dust problem every time the air conditioner kicks on.
Did I do something wrong, or was this dust just laying in the system all this time?
Also, what can be done other than running a shop vac hose down the vents as far as I can?
Thanks in advance for any advice…