ATLANTA - The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) announced that a proposed guideline, currently out for public comment, would provide guidance on achieving good indoor environments by considering the interactions of air quality and thermal conditions as well as lighting and acoustics.

ASHRAE Guideline 10P, Interactions Affecting the Achievement of Acceptable Indoor Environments, calls attention to interactions that designers might not have previously recognized or understood. The guideline is open for public comment until May 24.

“The guideline summarizes what research and experience have taught us about the complex interplay of the wide range of factors that determine occupants’ reactions to the buildings they inhabit,” said Hal Levin, chair of the committee that prepared the guideline.

Levin explained that the guideline is intended to help users understand and use existing documents that deal with indoor environments, including the ASHRAE standards related to ventilation and indoor air quality and thermal conditions with a more complete understanding of the impacts of the indoor environment on occupants.

“It can provide assistance to building design professionals and building operators by making them aware of the major interactions that have the potential to impact the indoor environment,” he said. “We believe the guideline will help draw attention to the narrowly-defined scopes of the widely-used standards and the significance of interactive effects in determining the acceptability of an indoor environment.”

The draft of Guideline 10P is available for comment only during its public review period. To read the guideline or to comment, visit

Publication date:04/26/2010