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Energy-efficient houses in cold climates often feature triple-glazed windows with a U-value between 0.19 and 0.26. In moderate and hot climates, quality double-glazed windows with a U-value of about 0.30 are generally a more cost-competitive and effective choice. [8]
Insulating glass is an evolution from older technologies known as double-hung windows and storm windows. Traditional double-hung windows used a single pane of glass to separate the interior and exterior spaces. In the summer, a window screen would be installed on the exterior over the double-hung window to keep out animals and insects.
In 1992, Pella entered the national retail market with windows and patio doors, adding select lumberyard distribution in 1994. In 2001, Pella introduced Pella Design Centers to mainstream market customers, as a “store-within-a-store inside Lowe's stores and staffed by Lowe's employees.
Andersen Corporation and its affiliates make up the largest window and door manufacturer in North America. [5] Andersen Corporation and its subsidiaries manufacture and market window and door products under the names Andersen, Renewal by Andersen, MQ, and Heritage. Andersen has manufacturing facilities in the United States, Canada, and Italy.
Large glass panels, French doors, or sliding glass doors between the building and attached sunspace will maintain an open feeling without the heat loss associated with an open space. A sunspace with a masonry thermal wall will need approximately 0.3 ft 2 of thermal mass wall surface per ft 2 of floor area being heated (0.3 m 2 per m 2 of floor ...
In cold conditions, the main aim is to reduce heat flow out of the building. The components of the building envelope—windows, doors, roofs, floors/foundations, walls, and air infiltration barriers—are all important sources of heat loss; [35] [36] in an otherwise well insulated home, windows will then become an important source of heat ...