Precision Air Balance is an HVAC Testing, Adjusting and Balancing (TAB) company that was established in 2001 with the purpose of assisting Engineers, Architects, Owners, and Contractors in the (TAB) work of Commercial Heating, Ventilation and Air Conditioning Systems.What is balancing? Balancing is the methodical regulation of system fluid flows (air or water) through the use of acceptable procedures to achieve the desired or specified flow of air or water.Our (TAB) specialists obtain test measurements of air and hydronic flows, adjust as required to achieve a balanced Commercial HVAC System.