Top 10 Window Manufacturers in the U.S. (2026 Rankings)

The U.S. window and door market is worth over $30 billion annually. Despite that scale, the industry is concentrated around a relatively small number of large manufacturers. Andersen, Pella, JELD-WEN, MI Windows and Doors, and a handful of others account for the majority of residential window production in the country. Hundreds of regional and specialty manufacturers fill out the rest of the market, but if you are buying replacement windows, you will almost certainly encounter the major names first.

Understanding who manufactures your windows has practical consequences. Warranty claims go through the manufacturer, not the installer. Replacement parts — sash balances, hardware, glass units — need to come from the original manufacturer or an approved supplier. A company that is acquired, shut down, or exits a product category can leave you without support for windows expected to last 20 to 40 years. The consolidation that has reshaped this industry over the past decade makes that a real consideration.

This page covers the ten largest window manufacturers operating in the U.S. market as of 2026 — who they are, what they make, who they serve, and where they sell. If you are trying to decide which brand to buy, see our best replacement windows ranking for the consumer-focused guide. Use our window replacement cost calculator to estimate project costs once you have a brand in mind.

The 10 Largest U.S. Window Manufacturers

Ranked by estimated U.S. market presence, distribution scale, and production volume. Revenue figures for most of these companies are not publicly reported at the product-line level, but market position can be inferred from distribution reach, dealer networks, and available industry data.

1. Andersen Corporation

Andersen is the largest window manufacturer in the United States. Founded in 1903 and headquartered in Bayport, Minnesota, the company has operated continuously for over 120 years and maintains manufacturing facilities across the country. Its product range covers virtually every price point, from the entry-level 100 Series built on Fibrex composite to the premium A-Series and E-Series wood-clad lines. The 400 Series is among the most installed residential replacement windows in the country.

Andersen operates two largely separate businesses under the same corporate umbrella. The standard Andersen line sells through Home Depot (its exclusive mass-market retail partner) and independent dealers, installed by third-party contractors. Renewal by Andersen is a separate full-service division that sells, supplies, and installs windows directly to homeowners — and carries a significant price premium for that turnkey service. Both carry the Andersen name and warranty but serve different parts of the market. See our best replacement windows guide for a detailed breakdown of Andersen's product lines.

2. Pella Corporation

Pella is the second-largest U.S. window manufacturer. Founded in 1925 in Pella, Iowa, where it remains headquartered today, the company has built a broader material range than most competitors — offering vinyl, fiberglass, wood, and wood-clad products from a single manufacturer. That breadth, combined with a national network of Pella showrooms where buyers can compare products in person, gives Pella a sales model that is more retail-experience-oriented than most window brands.

Pella is also notable for its fiberglass offering. The Lifestyle Series is one of the stronger fiberglass products available from a national brand and makes triple-pane glass a standard option — an advantage for buyers in colder climates. The Architect Series is Pella's premium wood-clad product line and competes directly with Andersen's A-Series. Pella's limited lifetime warranty on most lines includes two years of labor coverage, a feature not offered by all competitors. See our Andersen vs Pella comparison for a detailed side-by-side.

3. JELD-WEN

JELD-WEN is a publicly traded global window and door manufacturer headquartered in Charlotte, North Carolina. Founded in 1960, it is the most widely distributed window brand in the U.S. — products are stocked simultaneously at Home Depot, Lowe's, and Menards, making it available in virtually any market. JELD-WEN also manufactures under multiple sub-brands and private labels across different regions, meaning buyers may receive JELD-WEN-produced products without seeing the JELD-WEN name on the box.

JELD-WEN's product range runs from builder-grade vinyl at the low end through mid-range vinyl and into wood products. The builder-grade lines (often specified by volume homebuilders and price-sensitive contractors) represent the bulk of the brand's volume. At the middle and upper tiers, JELD-WEN competes with Andersen, Pella, and Simonton, though its reputation for quality consistency at those tiers is more mixed than those competitors.

4. MI Windows and Doors

MI Windows and Doors is a private manufacturer headquartered in Gratz, Pennsylvania, founded in 1947. It is one of the larger window companies in the U.S. by production volume and operates manufacturing facilities across multiple states. MI primarily serves the professional channel — contractors, dealers, and distributors — and has limited direct consumer brand recognition compared to Andersen or Pella.

The most significant development in MI's recent history is its 2020 acquisition of Milgard Windows and Doors, the dominant window brand on the West Coast. The acquisition brought Milgard's manufacturing infrastructure, dealer network, and brand equity under the MI umbrella. Milgard continues to operate as a distinct brand with its own product lines and warranty terms, but MI Windows is the parent company behind it.

5. PGT Innovations

PGT Innovations is a publicly traded manufacturer headquartered in Venice, Florida, founded in 1980. PGT built its business on impact-resistant windows and doors designed for hurricane-prone coastal markets. In Florida, the Carolinas, the Gulf Coast, and other hurricane-exposure zones, PGT is a dominant brand — its products are engineered to meet Florida Building Code requirements for impact resistance and are specified heavily by builders and contractors in those markets.

PGT operates several brands across the impact-resistant segment, including PGT, CGI, WinGuard, and others acquired through its growth strategy. Outside the Southeast and Gulf Coast, PGT has limited market presence — the company's expertise and product line are tailored to a specific regional requirement that does not apply in most of the country.

6. Marvin

Marvin is a privately held premium window manufacturer founded in 1912 and headquartered in Warroad, Minnesota, where it remains the largest employer. Marvin does not compete on price — it competes on craftsmanship, customization depth, and wood window quality. The company manufactures wood, clad-wood, and fiberglass products across three lines: the Essential Series (entry point for the brand), the Elevate Series (fiberglass-clad wood), and the Ultimate Series (fully customizable wood and clad-wood in virtually any configuration).

Marvin windows are distributed exclusively through certified Marvin dealers. The company does not sell through mass-market retailers and has a smaller dealer footprint than Andersen or Pella. For homeowners working on high-end renovation projects, historic homes, or builds where architectural quality matters, Marvin sets the standard. For standard replacement projects where the goal is performance and energy efficiency at a reasonable cost, mid-range options from Andersen or Pella deliver comparable functional results at significantly lower prices. See our best replacement windows guide for a full comparison.

7. Ply Gem (Cornerstone Building Brands)

Ply Gem is a window brand owned by Cornerstone Building Brands, a large private-equity-backed building products conglomerate headquartered in Cary, North Carolina. Cornerstone also owns Simonton Windows and Great Lakes Window, making it one of the larger holding companies in the residential window industry even if the Cornerstone name is not widely recognized by consumers.

Ply Gem windows are sold through contractor and dealer channels nationally, primarily in the mid-range vinyl segment. The brand has a broad product portfolio built for the professional installer market rather than the retail consumer. Great Lakes Window, another Cornerstone brand, is a regional player in the Midwest. Simonton (covered separately below) operates as the most recognized consumer-facing brand in the Cornerstone portfolio.

8. Milgard Windows and Doors

Milgard is the dominant window brand for homeowners on the West Coast. Founded in 1958 in Tacoma, Washington and acquired by MI Windows and Doors in 2020, Milgard built its reputation on manufacturing quality, regional service infrastructure, and one of the strongest warranties in the industry — a full lifetime warranty for the original owner covering parts, labor, and glass.

Milgard's product range includes vinyl (Style Line and Trinsic Series) and fiberglass (Ultra Series) options, with strong ENERGY STAR compliance and California Title 24 certified products for West Coast buyers navigating state energy codes. The Ultra Series is a direct competitor to Pella's Lifestyle Series on fiberglass quality. Milgard's geographic distribution remains concentrated west of the Rockies — the lifetime warranty's practical value depends on the regional service network that backs it, which is largely absent outside the Western states.

9. Simonton Windows

Simonton is a vinyl-only window manufacturer founded in 1946 and headquartered in Columbus, Ohio. It is part of Cornerstone Building Brands and operates as the most consumer-recognizable brand in that portfolio. Simonton focuses entirely on the vinyl segment and has built a solid reputation at the entry and mid-range price points.

The Reflections 5500 is Simonton's entry-level product — ENERGY STAR certified, competitively priced, and available through a national contractor and dealer network. The Impressions 9800 and Inovo lines step up in hardware quality and glass options. Simonton offers no wood, fiberglass, or wood-clad products, which limits its appeal for buyers who want material options. But for straightforward vinyl replacement projects where budget is the primary constraint, Simonton is a credible choice. See our best replacement windows guide for how Simonton compares to other brands.

10. Harvey Building Products

Harvey Building Products is a Northeast regional manufacturer founded in 1961 and headquartered in Waltham, Massachusetts. It is the dominant regional brand in New England and the Mid-Atlantic, with a product line engineered specifically for the demands of Northeast climates — cold winters, humid summers, freeze-thaw cycles, and coastal salt air exposure.

Harvey's product range runs from the Classic Series (entry-level vinyl) through the Tribute Series (mid-range vinyl) to the Majesty Series (composite frames with higher-end glass packages). Harvey's regional focus means its dealer network, installation expertise, and warranty service infrastructure are concentrated in the Northeast. For homeowners in that region, Harvey competes well against national brands on price and service. Outside the Northeast, Harvey is largely unavailable and the regional service advantage disappears.

Industry Trends Shaping the Market

The U.S. window manufacturing industry has changed significantly over the past decade. Four trends are shaping the competitive landscape as of 2026.

Consolidation. The industry has been consolidating steadily through acquisition. MI Windows acquired Milgard in 2020, bringing the West Coast's largest brand under a regional manufacturer's corporate umbrella. Cornerstone Building Brands — itself a private-equity vehicle — merged the Ply Gem and Simonton brands under a single holding company. The practical consequence for consumers is that fewer independent manufacturers exist than the brand count suggests. When evaluating warranty durability, the financial stability of the parent company matters as much as the brand name on the window.

Material shift. Vinyl dominates U.S. residential window production, accounting for over 55% of the market by unit volume. Vinyl's dominance reflects its cost advantages, low maintenance requirements, and consistent energy performance. Fiberglass is the fastest-growing material segment — stronger than vinyl, dimensionally stable across temperature extremes, and capable of being painted. Pella's Lifestyle Series and Milgard's Ultra Series are the most widely distributed national fiberglass products. Wood and wood-clad windows have declined in share as maintenance costs and price premiums have pushed most buyers toward lower-maintenance alternatives.

Energy standards. ENERGY STAR 7.0 updated minimum performance thresholds for certified windows, pushing manufacturers toward improved glass packages — lower U-factors, better Solar Heat Gain Coefficients calibrated by climate zone, and more consistent triple-pane availability. Most major manufacturers now offer ENERGY STAR certified products across their lines. The differentiator has shifted from whether a window is ENERGY STAR certified to how well it performs relative to the certification floor.

Supply chain normalization. The pandemic-era disruptions that pushed lead times for custom and specialty windows out to 12-20 weeks have largely resolved. As of 2026, most major manufacturers have returned to standard lead times for in-stock and made-to-order products. Lead times for fully custom orders — unusual sizes, non-standard configurations, premium wood lines — remain longer than commodity vinyl products but have stabilized from the disruption peaks.

How to Choose Between National and Regional Brands

National brands — Andersen, Pella, JELD-WEN — offer broader availability, more consistent warranty support, and easier access to replacement parts over the long life of the window. A large manufacturer is more likely to be operating in 20 years than a small regional one, and parts availability for a national brand's product line is generally better than for a regional brand with limited distribution.

Regional brands — Milgard on the West Coast, Harvey in the Northeast, PGT in hurricane zones — can offer better pricing and more attentive service within their territory. A regional manufacturer whose installers and service technicians are concentrated in your market may provide faster warranty response and more competitive installation pricing than a national brand whose nearest service infrastructure is several states away. The trade-off is geographic: the advantages of a regional brand only apply within that region.

For a detailed consumer guide on which specific products to consider based on budget, region, and performance requirements, see our best replacement windows ranking.

Frequently Asked Questions

Estimate Your Window Replacement Cost

Use our window replacement cost calculator to get a project estimate based on window count, styles, and your location. Once you have a sense of budget, the best replacement windows guide can help you match that budget to the right manufacturer and product line.