This week was really fun to have Tim Quigley on the show.  He's a wealth of knowledge and has helped me a ton when I came to Air Treatment.  He's helped me learn many of the "rules of thumbs" that are needed in sizing/placing pumps, cooling towers, chillers, air separators, buffer tanks, expansion tanks, strainers and piping/plumbing design "rules of Thumb".  I quizzed Tim for an hour and I think everyone will learn something from this episode.  My intention here was to discuss the items that can cause for contractor change order and RFI's.