AERC Member Company, Larson Manufacturing Moderates Session on Commercial ‎Secondary Window Products at AESP’s Annual Conference


AERC Member Company, Larson Manufacturing, Moderates Session on Commercial Secondary Window Products at AESP’s Annual Conference

New York (27 January 2021) — The Attachments Energy Rating Council (AERC) member and fenestration expert David Bailey will lead an innovative panel session on commercial secondary windows at AESP’s Annual Conference on January 27 at 11:30 ET. Titled “Pushing the (Building) Envelope with Commercial Secondary Window Field Tests,” the session will give attendees a practical roadmap to enhance energy savings of building envelopes with commercial secondary window systems. Other participants in the panel discussion include Shannon Christie, Program Manager, D + R International, Natalie Hatheway, Program Manager, NEEA, Moshfiq Islam, Senior Specialist, Energy Efficiency and Demand Management, Con Edison.

“Larson’s collaboration with and participation in AERC and their rating and certification program has created a deep resource of knowledge and data on commercial secondary windows and their applications,” said Bailey, who is Division Manager at Larson Manufacturing Company, a leader in window systems and longtime AERC member.

Launched in mid-2020, AERC’s Commercial Secondary Window Program demonstrates the potential of secondary windows and provides the industry with valuable data on the energy performance of these products, including U-factor, Solar Heat Gain Coefficient (SHGC), Visual Transmittance (VT), and Air Leakage.

In collaboration with utilities, a consortium of manufacturers, researchers, and governmental leaders, AERC created a program to assess and certify secondary window systems and to support utilities in creating programs and measure adoption. For example, the Northwest Energy Efficiency Alliance (NEEA) is running a field study 2020-2022 to validate energy savings in the Northwest region (OR, WA, ID, and MT) and is leveraging AERC’s third-party certified commercial secondary window ratings to inform that study. Additionally, Consolidated Edison (NY) ran a pilot in the New York City area in 2020, which required AERC’s commercial secondary windows program and leveraged the ratings information to inform their product choices and evaluations.

“AERC is pleased to support this engaging session during AESP’s Annual Conference,” said Ralph Vasami, Executive Director of AERC. “Whether through participation in conferences like AESP’s or in utility pilot program, AERC will always make it a goal to facilitate collaboration among research, utility, and industry partners.”

To find more information about the AESP Annual Conference visit their website. For questions about AERC and the certified commercial secondary window program, contact [email protected].

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About the Attachments Energy Rating Council (AERC)

The AERC is an independent, public interest, non-profit organization whose mission is to rate, label and certify the energy performance of window attachments such as blinds, shades, shutters, and storm windows. AERC is made up of a diverse set of stakeholders, which include product and component manufacturers, non-profit organizations, government bodies, testing labs and utility companies. Partially funded by the U.S. Department of Energy (DOE), AERC provides accurate and credible information about the energy performance of window attachments, which helps the public–including homeowners, architects and builders—make informed decisions when it comes to buying window attachment products. To learn more about AERC certification or the AERC Energy Improvement Program, visit

January 27, 2021