2016 ASHRAE Residential IAQ Standards Covers All Multifamily Units


The American Society of Heating, Refrigerating, and Air-Conditioning Engineers or more commonly known as ASHRAE, announced that multifamily units in all types of establishments are now covered in the scope of its residential IAQ standards, and this has been considered one of the major changes to the 2016 version.

ANSI/ASHRAE Standard 62.2-2016, Ventilation and Acceptable Indoor Air Quality in Residential Buildings, determines the roles of minimum demands for mechanical and natural ventilation systems and the building envelope intended to yield acceptable indoor air quality in residential buildings.

Before this new edition, multifamily residential buildings that are four stories or above fell under the scope of ANSI/ASHRAE Standard 62.1, Ventilation for Acceptable Indoor Air Quality.

Paul Francisco, the Chairman of the Standard 62.2 committee said that presently, the residential units themselves are covered by 62.2 disregarding building height while some common areas of those buildings stay in the scope of 62.1.

Francisco also said that the change gives the consistency of ventilation requirements for dwelling units regardless of building height. For new construction, this will result in a change of requisites for residential units that are in a four-story or above establishments. For the retrofit market, this change will result in coverage by ASHRAE ventilation standards for the first time in residential units in establishments with four or above floors. The new standard also has a method of claiming an infiltration credit for horizontally-attached units.

Another notable change in the standard has a means of identifying equivalency for a variety of ventilation scheduling strategies. This specific change also introduces a maximum short-term exposure to make sure that meeting annual equivalence does not unduly compromise short-term IAQ.

The price of standard 62.2-2016, Ventilation and Acceptable Indoor Air Quality in Residential Buildings is $54 for ASHRAE members while non-members can have it at $64.

ASHRAE was founded in 1894 and is a global society that advances human well-being through sustainable technology for the built environment. The organization’s mission is to advance the arts and sciences of heating, ventilation, air conditioning, and refrigeration to serve humanity and promote a sustainable world.