Energy Ratings + passive house thermal data

Low conductivity fiberglass frames with low-e glass provide superior energy performance.

Below you will find comprehensive thermal performance data for NFRC ratings of all Cascadia classic window products. 

There is also useful ISO modelling data for our most popular series Classic Series products.

All of our standard products have earned the Canadian ENERGY STAR label. 

Passive House clients and consultants often require thermal performance data for windows and doors that is produced according to the EN ISO 10077-2 and EN673 standards (European thermal modelling methods).

    • *Note: The CR results obtained from the testing procedures are for controlled laboratory conditions and do not include the effects of air movement through the specimen, solar radiation, and the thermal bridging that may occur due to the specific design and construction of the fenestration system opening.

    • Nearly all of our standard products are ENERGY STAR qualified for Canadian zone 1. Many Cascadia products also meet ENERGY STAR requirements for Canada zones 2 and 3.

      Please note that the Energy Star zones in the tables above are only for Canada, not for the United States.