Proposed new Standard 193 specifies a laboratory test for the airtightness of individual components in an HVAC system. Although ASHRAE Standards 62.2 and 152 address air leakage in HVAC systems as a whole, they do not provide a way to determine the airtightness of specific components in an HVAC system. Targeted at systems that move less than 3000 cfm (1400 L/s), Standard 193 will provide laboratory results that may be used by cognizant authorities who wish to regulate the air leakage of HVAC equipment and by contractors and installers that wish to specify and install equipment with known leakage characteristics.