I found this site a couple of days ago and really enjoy this site. I am in the HVAC field. mainly commercial. I work for APC (formaly know as Airflow Company )(one of the big L's competition) Servicing the computer room units that we build. Just wanted to say hi to all of you and wanted to let you know that if any of you come across any of my equipment and need some help or tricks I'm more than willing to help out in any way that I can.