The best windows made in the USA are generally considered to be Marvin, Andersen, Pella, and Okna, all manufactured in US with strong quality and energy efficiency. Marvin windows are made in Warroad, Minnesota and Grafton, North Dakota, and are considered best for premium custom homes with Ultrex fiberglass exterior that is extremely durable, beautiful wood interiors, extensive customization, and U-factors as low as 0.20, ranking top in contractor surveys. Andersen windows are made in Bayport, Minnesota and other US plants, and are considered best overall for balance of wood interior beauty and Fibrex low maintenance, with 400 Series and A-Series offering excellent energy efficiency and strong warranty, plus wide availability. Pella windows are made in Pella, Iowa and other US plants, and are considered best for historic replication and wide material choices including wood, fiberglass, and vinyl. Okna windows are made in Bristol, Indiana, and are considered best vinyl windows made in USA for value and energy efficiency, with U-factors as low as 0.20 and air infiltration below 0.02. Soft-Lite and Sunrise are also top US-made vinyl brands. For premium wood, Kolbe and Loewen are also US-made but more niche. All these brands are made in USA with American manufacturing, family ownership, and meet Energy Star 7.0, making them best windows made in USA.
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