Thank you all for your help and plain talk. I will, shall we say, extract the pertinent thoughts on the problem, and hope it helps this guy do the right thing. I did call another company (the same company the builder used in the first place) to get a ball-park on getting them to fix the problem. Guess I am learning my lesson on low bidders! Not that this guy was inexpensive. The orginal contractor did seem to indicate that (or at least I interpreted his explanation to say)there is some common point at the heating and blower unit in the attic where debris could clog the system, which they would check in addition to the recovery and recharge. I think he mentioned the drier as well, but not certain if that was what he was referring to?
What a headache!
Thank you all once again.