Is there one brand of vinyl windows that is more energy efficient and reliable?

As a green architect, I usually do not spec vinyl. This is highly debatable in the green world -- on the one hand, vinyl windows save trees and paint and are lower maintenance than wood. When compared to aluminum-clad wood windows, the vinyl at least saves on wood, if not the other two.

BUT vinyl is horrible for the planet. Its production has been shown to cause cancer as it pumps carcinogens into the environment during production as well as during a house fire.

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