Industry Stands Strong, Tells ASHRAE: Do Not Limit WWR; But ASHRAE Delays Action

The American Society of Heating, Refrigerating and Air-Conditioning Engineers Inc. (ASHRAE) 189.1 workgroup 7 on Energy Efficiency met today to discuss the 72 comments in opposition of a proposed change to Addendum “am” to ASHRAE 189.1, “Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings.” The proposal seeks to limit the window-to-wall (WWR) ratio to 30 percent in small and medium-sized buildings “for the purpose of reducing energy use.” According to code consultant Tom Culp, representing the Glass Association of North America, the Aluminum Extruders Council, and the Glazing Industry Code Committee, all of the comments asked for the withdrawal of the addendum.

Culp told USGNN™ that the 72 public comments came from 57 different commenters on addendum “am,” all negative and asking for withdrawal of the proposal. He says this is significant in that typically there would only be about five to 15 comments on proposed addenda.

The workgroup took no formal action today other than to form a task group to discuss the proposal and comments at a later time. Culp also noted that PNNL plans to document its technical study, which is included in the foreword of the proposal, and will make it available to the public. According to Culp, opponents of the proposal had criticized the referenced study due to it not being made public as part of the public review, and also because it reportedly contained technical flaws, such as poor assumptions in more detail.

“It is disappointing that the ASHRAE 189.1 workgroup is dragging this out rather than just voting to withdraw this flawed proposal, but I am heartened by the huge response,” says Culp. “Our industry made a strong statement in our comments, and there were also negative comments from architects, university professors, lighting designers, daylighting researchers, and even one of the co-authors of the study supposedly being used to justify the proposal. This delivers a clear message about the seriousness of this issue, and it would be illogical for the committee to pursue this further.”

Stay tuned to for more news as it’s made available.

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1 Response to Industry Stands Strong, Tells ASHRAE: Do Not Limit WWR; But ASHRAE Delays Action

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