While doing a little home improvement, I took down a hall closet(in the
front hallay) and built a new closet on the opposite wall away from the
front door.
Now comes the ooppss. A few weeks later I notice that the cold air return
on the second floor is no longer sucking any air. Take off the grill, get a
flashlight and mirror and look through the cavity and realize that the small
whole in the ceiling downstairs from inside the closet wall I took down must
have been the hole that I covered up. So now I go to the basment and find
the cavity that has the duct work in it for the upstairs hallway and sure
enough, it's covered.
All that said and done, my question is, how do I get the cold air from
upstairs to go away? It is now colder up there than it ever was. There is
one other cold air return and thats at the opposite end of the hall, so I
don't think this one return is sufficient to handle all the cold air from 4
bedrooms?
Any comments/suggestions would greatly be appreciated.

C in NY