Commercial Window Attachments
Creating a window into future savings
This new program encourages the installation of high-performance commercial window attachments (secondary glazing systems) as a standard practice for competitive advantage in Northwest buildings.
Designed for use in existing commercial office, historic, educational, and government buildings with low-performance windows, window attachments are approximately half the cost of replacement and may be installed as a stand-alone energy efficiency measure or as part of a deeper energy retrofit.
The program will work to identify which building types are most cost-effective for window attachments, raise awareness of the product in the market, and partner with the Attachments Energy Rating Council (AERC), in coordination leading commercial window manufacturers, to influence national standards.