unperson. n. 1. a person whose existence is officially denied or ignored. (ËÊnËpÉr sÉn). n.nperson. n. 1. a person whose existence is officially denied or ignored. (ËÊnËpÉr sÉn). n.
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
rahul gopinath. An air handler, or air handling unit (often abbreviated to AHU), is a device used to condition and circulate air as part of a heating, ventilating, and air-conditioning (HVAC) system. Usually, an air handler is a large metal box containing a blower, heating and/or cooling elements, filter racks or chambers, sound attenuators, and dampers.