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HVAC Testing, Adjusting and Balancing are the three major steps used to achieve proper operation of HVAC systems. TAB usually refers to commercial building construction and the specialized contractors who employ personnel that perform this service. In general, the TAB specialist performs air and hydronic measurements on the HVAC systems and adjusts the flows as required to achieve optimum performance of the building environmental equipment. The balancing is usually based upon the design flow val
If your project is complex, or your customer includes a certified air balance in the bid specs, be sure to include the following cost allowances on the front end: A mechanical engineer A system with products capable of a certified balance The cost for a balancing company An HVAC contractor on site during balance.his understanding may help you avoid the temptation to put only $50 in your bid when you see your customer specifications requiring an AABC Certified Air Balance. The $50 only covers the cost of the waving the hand comfort balance.