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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
While this should keep the system balanced, the system can be thrown out of balance by such things as dirty filters, the occupants changing the register setting, office remodeling, and reconfiguring registers and ducting. The cost to do an AABC Certified Air Balance ranges from $75-150 per opening.You're paying for time, labor, expertise, equipment, and a Certified Balance Report. A building with five supply openings, five return openings, one exhaust fan, and one OSA intake has 12 openings to verify.Depending on the complexity and location of the openings, you can expect to pay $900-$2,000 for an AABC Certified 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.