303 Windows

Service Provider in Denver, Colorado

303 Windows also known as Centennial Home Improvements Inc. is a Denver Window company serving Denver Metro Area by installing Amerimax Vinyl Windows. We have an A+ rating and gold star award from Denver Better Business Bureau yearly.

We have been at the same location, with the same ownership since 1995. Our installers have worked together since 1988 and joined our company in 1996. They have collectively installed over 25,000 vinyl windows in Denver.

We have been proudly serving the Denver Metro Area with thousands of Amerimax Vinyl Windows installed in Arvada, Aurora, Boulder, Broomfield, Castle Rock, Centennial, Englewood, Highlands Ranch, Lakewood, Littleton, Louisville, Northglenn, Parker, Thornton, and Westminster.

With an A+ rating and a GOLD STAR Award from the Denver Better Business Bureau every year since it’s inception in 2003 we believe we are your Denver Window experts.

As Denver Window experts, we believe that Amerimax is the only window for Colorado. Amerimax Windows are Colorado built Vinyl Windows specifically engineered for Colorado’s climate.

As you may have heard there is a new tax credit for energy efficient windows and doors contained in the new stimulus plan. Tax Credit Info. This tax credit is available for the installation of new products which meet the requirements of the plan.


Certifications, Standards and Eco-Labels

303 Windows has obtained the following Certifications, Standards and Eco-Labels

Listing Categories



2375 South Downing Street
Denver, Colorado
USA 80210
(303) 946-3697

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