Andersen vs Renewal by Andersen: What the Published Specs Say

Andersen and Renewal by Andersen are related but distinct. Andersen sells product lines through dealers and builders, while Renewal by Andersen is a full-service replacement division. This page reports what each states on its own site about the materials it builds with.

How to read this comparison

The facts below come from each company's own website. That makes them a primary source for what each builds, but the pages are also marketing, so treat material claims as positioning rather than independent test results. For the energy numbers that matter, U-Factor, SHGC, and Air Leakage, read the NFRC label on the exact product and glass package you are quoted. We do not name a winner; the two operate on different sales and installation models.

What Andersen publishes

Andersen sells a range of series and materials. On its windows overview the company identifies as an ENERGY STAR Partner of the Year and organizes its residential windows into series including the 100 Series, 200 Series, and 400 Series.

Its 400 Series flagship is wood-based; Andersen states 400 Series products are primarily made from wood with a Perma-Shield exterior cladding, come standard with dual-pane glass, and carry a limited warranty listed as 20 years on glass and 10 years on non-glass parts.

What Renewal by Andersen publishes

Renewal by Andersen builds its windows from a single proprietary composite. The company states its windows are made from the Andersen-exclusive Fibrex composite material, and frames the product around efficiency, strength and durability, maintenance, and beauty.

Renewal offers that material across the common styles, listing awning, bay and bow, casement, double-hung, picture, sliding, and specialty windows, and backs them with a limited warranty.

Where they differ on paper

The documented difference is material and model. Andersen's flagship 400 Series is a wood window with a Perma-Shield exterior sold through its dealer and builder channels, while Renewal by Andersen builds exclusively from the Fibrex composite and sells through a full-service replacement model.

Both carry the Andersen name and both back their products with limited warranties, but the product you receive and the way you buy it differ. Because both sell certified products, the decisive energy numbers come from the NFRC label on the exact model and glass package you are quoted.