Historical
ANSI/ASHRAE Standard 193-2010
Method of Test for Determining the Air tightness of HVAC Equipment
Applies to the following: (a) Equipment intended for installation in ducted systems, including furnaces, heat pumps, air conditioners, coil boxes, filter boxes, and associated components. (b) Equipment that moves less than 3000 cfm (1400 L/s) of air.
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ashrae]