"Dave" wrote in message
...
"Tekkie®" wrote in message
. ..
posted for all of us...

Central air conditioners circulate cool air through a system of supply
and return ducts. Supply ducts and registers...

http://airconditioninginfo.blogspot.com/


Clark Kent, tell this guy it ain't so...
--
Tekkie Don't bother to thank me, I do this as a public service.

I like it when people get hosed into believing air conditioning is a
closed
system. There's something called makeup air.


Which most residential systems don't have.
So what's your point?