is there a trick to tracing ductwork? some methology other than getting my wife to yell into one end, and me listen at the other?
Another way is to blow smoke through the duct with the vaccum cleaner. Or, if its metal duct, you could run an electrician's fish tape through it.
Checkout the following article. It's the method I use to trace ducts. I hope you find it helpful.http://timothymarsh.hubpages.com/hub...Homes-Ductwork