303 Windows, also known as Centennial Home Improvements Inc., is a Denver-based company specializing in the installation of Amerimax Vinyl Windows across the Denver Metro Area. They are recognized for their high-quality service and competitive pricing, earning an A+ rating and a gold star award from the Denver Better Business Bureau. Customers appreciate the professionalism of the installation crew, including Jake, Chuy, and Max, who are noted for their strong work ethic and cleanliness. Reviews highlight the company's quick and efficient communication, as well as the double lifetime warranty on their windows. Clients commend the team's attention to detail, punctuality, and willingness to go above and beyond, such as cleaning up after the job. Customers have reported a marked difference in energy efficiency after installation. Overall, 303 Windows is highly recommended for their outstanding service, integrity, and commitment to customer satisfaction, making them a better choice than larger companies.
We had 303 Windows replace our sliding glass door with a French door with a doggie door installed in the glass. It turned out fantastic! My wife price shopped three or four companies and one said the job was too small, another said the door was too specialized and 303 and another company actually quoted us. These guys were less than half the competitor’s quote. Max and his crew showed up on time, put down floor protection, were super polite and professional. I asked him to get me a quote on windows for the entire house because I was so impressed with the price, quality and installation.
Sep 2026
5.0★★★★★
303 Windows is a local family owned business. I liked everything about their process from the very beginning. Jay was helpful to explain the process from our first meeting and even gave me some tips on what to ask other companies about their process. He was very patient while we slowly made our decision, no high-pressure sales tactics here. Their price was very competitive and we decided to get vinyl casement windows installed to replace our builder-grade sliders that were put in when our house was flipped in 2009. We also replaced our dining room window with a slider so we could walk out into our backyard instead of going through the garage.
We spoke with several window installation companies before we met Jay at 303-Windows. He won us over with the right balance of affordability and the high quality of Anlin brand vinyl replacement windows. His two sons, Max and Jake, head up the installation crew and payed attention to details that made the whole process go smoothly and timely. I highly recommend this local, family run, window installation company and won’t hesitate to call them again when I need to replace my front door in the near future.
