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  1. General HVAC Discussion
    Hi, I'm a newbie here, but not to the trade, after 25 years in HVAC in different places around the world I find myself now managing a high rise in Houston TX. now those with there fingers on the pursestrings, in an attempt to save on power wish to control building pressure using VFD's on the...
  2. General HVAC Discussion
    Sorry moderator, clean up in isle 1.
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