Superior Energy efficiency allowing for the maximum amount of glass in the design. The extreme energy efficiency (highest full frame R values of any window company) and design of SeriousWindows fiberglass products allows for more direct natural lighting in the overall building design which leads to less energy used to provide the required indoor lighting.

Superior air infiltration values. Extremely low air infiltration is required for passive homes. And Serious Windows have some of the lowest air infiltration values available anywhere.

Selectable solar heat gain. SeriousWindows offer both low and high solar heat gain for correct high gain required in passive homes in northern climates.

High Visual Transmission. Even with very high R values and high solar heat gains, SeriousWindows offer superior light transmission required for passive homes.

Operable windows for natural ventilation. Operable windows take full advantage of natural ventilation to help maintain comfortable temperature year-round, depending on the local climate.

99.5% UV protection. Harmful UV light can significantly fade furniture, drapes and carpeting and cause interior damage. SeriousWindows - using our SCF glass technology - creates windows with high UV protection allowing for natural light, not the sun’s damaging rays, to come in.

Fiberglass or vinyl choices. While fiberglass is a superior window for infiltration and strength, Serious offers many high R value vinyl options as well for passive house on a budget.

Learn More

Find out more about SeriousWindows and Passive House and performance specification by visiting our Project Gallery or by downloading the Passive House brochure:

Download SeriousWindows for Passive House