Certified Window Co., a family-owned business since 1984, is a leading provider of vinyl window replacement and installation services in Maryland, DC, and Virginia. Customers appreciate their fast, friendly, and efficient service, with many highlighting the company's fair prices and high-quality work. The team is known for being courteous, clean, and thorough, often completing multiple windows in a single day. The company works closely with clients to ensure all needs are met, including navigating complex HOA approval processes. Customers report that their new windows and patio doors improve their home's look, feel, and energy efficiency, making homes warmer in winter. The owner is praised for being non-pushy and honest, providing accurate estimates and delivering on promises. Compared to other companies, Certified Window Co. offers better prices and higher-grade windows, making them a trusted choice for window replacement and installation needs.
Jim Ragusa and his crew were very friendly and efficient. Everything was installed carefully and they cleaned up after the job was done. Definitely recommend this company for anyone needing new windows!
March 2026
I was very happy with the helpful service and advice the team provided when I needed to replace portions of my windows in a condo I newly acquired. They were easy to work with and very helpful. Thanks!!!
March 2026
Fantastic experience from start to finish. The team was professional, knowledgable and easy to work with. Installation was smooth and we noticed such a difference in our home.
We couldn't be happier with the outcome and would highly recommend!!
