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  1. #27
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    16,996
    Quote Originally Posted by Tech Rob View Post
    I saw a website not that long ago for an air balancing and commissioning company that worked strictly in the retail sector. Air balancing is a very important service for people that see value in having a performance-verified system that is balanced for the best efficiency. Don't mean to sound like a commercial, but I was pleasantly surprised to see that there was a company out there doing that. Most T&B companies do flat-rate per ton or per drop pricing for smaller stuff, so it can be a lot more economical than people think.
    In my experience, particularly in this economic environment, if the balancing cost $50, they would say it's $50 they don't want to spend.

    That's the attitude I find.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

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  2. #28
    Join Date
    Oct 2009
    Location
    Mukwonago, WI
    Posts
    234
    Quote Originally Posted by timebuilder View Post
    In my experience, particularly in this economic environment, if the balancing cost $50, they would say it's $50 they don't want to spend.

    That's the attitude I find.
    Here every commercial place that gets occupancy has to be tested and balanced. As a designer and a balancer, I would personally leave the OA setting alone. 10% may be a good rule of thumb, but I've done places that need 25%, and I've done stores that need 2% (co2 sensor setup). If 10% is to high, your causing excess energy usage, if you set it too low, you not allowing enough ventilation.

    Our inspections consist of cleaning coils, checking amps on all motors, checking pressures on refrigeration circuits, change filters, check economizer. visually check everything. bearings on all motors.clean trap, check pan, check stat. everything is documented, and quoted.

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