On Saturday, August 30, 2014 4:49:56 PM UTC-4, Terry Coombs wrote:

I'd say his BS meter is accurately calibrated. The mold thing sounds
bogus and like you say that it could be that bad and the unit working
fine, but uncleanable, doesn't computer.

On the other hand, I have to wonder about the calibration of his
AC system. 5 1/2 tons on a 2000 sq ft house?