I have done several proposals lately for people who are finishing an unfinished basement. They are always shocked to find their existing equipment isn’t large enough to do the job. Or if it is large enough, they can’t simply tap into the duct work handling the floor above to heat and cool their lovely new space. Many times these “do-it-yourselfers” head out to Home Depot, purchase a few hundred dollars-worth of miscellaneous flexible duct work, boots, elbows and grills, head back home and waste an enormous amount of time and money, only to discover they not only do not have the proper tools, they do not understand the simple concepts of how to use them once they acquire them.
More…

This is a constantly recurring question. The simple answer is absolutely…if you use them properly.
More…