I heard that you may have had a show on relating to water condensating inside flexible ducts for central a/c. I live in Putnam Valley NY and the weather has not been all that cold this year, however, I have water condensating inside the central a/c flex ducts in my attic. The system is three years old and I've had the same problem every winter. The HVAC company that installed the system does not have an answer other than this is a very rare problem. The a/c registered are closed and I've closed off the return with a piece of duct board rapped in plastic, still water is condensating inside the system. Please help if you can, I cannot go on draining the water out of the flexible ducts every winter!