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  • Users: goodwrench1
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  1. goodwrench1

    Direct Fired Heating cETL vs usETL rating

    Hello, I am continuing to do research on Direct Fired Heating Units such as http://www.rapidengineering.com/hvac/direct_fired/4000/hvac_direct_fired_4000_overview.html and http://www.trane.com/CPS/uploads/userfiles/productpdfs/mua-prc007-en_12042009.pdf I have found so far that these units...
  2. goodwrench1

    Direct Fired Make Up Air without Exhaust Fans

    Hello, I would like to ask the opinion of some experts in HVAC of an issue I am trying to get resolved at work involving air quality and safety, and would like to know what some of your thoughts are on the following. I am an automotive mechanic for a delivery company and the building I work in...

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