Built in 1975, Hurley Development’s 915 Broadway office building in downtown Vancouver, Wash., features floor-to-ceiling windows in every perimeter office—6,000 sq. ft. of windows in total. While all of these single-pane windows let in a vast amount of natural light, they also brought in far too much heat in summer, and too much cold air in winter. This thermal leakage not only led to tenant comfort complaints, it also inflated energy costs by forcing the aging HVAC equipment to strain to maintain indoor temperatures.
With tenant comfort a top priority, Hurley Development committed to finding a solution to solve the thermal leakage caused by so many thin, single-pane windows. When a full window replacement was quoted at $2–3 million dollars (almost as much as the building is worth), Hurley Development pivoted to a much more affordable and feasible option to solve their comfort and energy-cost issues: Secondary windows.
“I’d definitely recommend secondary windows. The installation was painless and they’re performing exactly the way we expected them to. I don’t know why you wouldn’t want to consider this for your commercial building.”
—David Berg, Vice President of Property Management, Hurley Development
When Portland law firm SBH Legal purchased their 1925 office building, they immediately noticed the road noise. While a full window replacement would be disruptive and cost-prohibitive for SBH Legal, they discovered a cost-effective, easy-to-install alternative called secondary windows.
Crane Aerospace and Electronics is an aerospace components manufacturer in Lynnwood, Wash. After receiving thermal comfort complaints in the summer and winter from occupants of a second-story office building, Crane committed to replacing the inoperable single-pane windows throughout the building with energy-efficient secondary windows.
In an effort to maintain the aesthetically pleasing and historically important appearance of the building’s façade, Montana State University turned to secondary windows to easily and more cost-effectively increase the building's energy efficiency and occupant comfort.
400 Market Street is a 12-story, 200,000-square-foot office building owned by Kaiserman Company. The building, built in 1972, had already undergone several building energy performance upgrades, but its poor performing single-pane windows were a weak point. The property manager wanted to improve tenant comfort, reduce operating expenses, and improve the building’s ENERGY STAR® rating, while avoiding the costly and lengthy process of full window replacements.
Built in 1909, Newcomer Hall at the Maryland School for the Blind in Baltimore, Md., is a private, nonprofit, state-supported institution attended by 73 percent of Maryland’s 1,800 blind or visually impaired students, age 3 to 20. The brick building provides space for early learning and elementary, middle, and high school programs. Due to its age, the building required a major restoration project that completely renovated the interior...