Well the filter ends up looking like the dryer screen. And I'm not
particularly confident about the dryer vent. But the utility room and the
bedroom are some distance apart. I'll look into this though. Thanks.

Joe


"John Grabowski" wrote in message
...
Just a thought; Is it possible that your clothes dryer exhaust is near the
return for this unit? Maybe the ducts are in the same wall cavity?


"Joe" wrote in message
...
I have a dusty house, like Charlie, with a different twist. This house
(in
N. Texas) has three AC systems, two of which show no unusual build-up of
dust on the filters after a month or two. The third, which serves the
master bedroom and bath, collects a considerable amount of gray
dust--enough
to obscure the surface of the filter--in a month. The filters are the
standard 1-inch filters in the return vents, and I'm using Filtrete
electrostatics. This seems to me to point to an open duct, but I
haven't
been able to find one. I understand that simply taping everything with
duct-tape isn't considered adequate. I'm not opposed to hiring someone
to
fix it if I could be convinced that it is a duct problem. Any more
ideas?
Thanks, Joe