The Highland Window Company, LLC, founded by Marc Cowan in 2002, has built a strong reputation in Connecticut for providing high-quality exterior renovations, including window replacements, siding, and entry doors. Their work is known for excellent workmanship, competitive pricing, and the use of top-notch materials. The company offers a full lifetime transferrable warranty for their installations. What sets Highland Window Company apart is their personal attention to customers. One satisfied customer shared that Marc didn't use high-pressure sales tactics, which they appreciated. The installation process was smooth, and the installed windows significantly improved the home's temperature during summer. Another customer praised Marc and his team for their professionalism, thoroughness, and responsiveness during the installation of over 20 new windows. They were very happy with the results. Customers have also highlighted the great value offered by Highland Window Company, noting that the entire process from start to finish was seamless with excellent communication. The installation team arrived on time and worked efficiently, completing projects in a timely manner. A third customer emphasized Marc's fair pricing, high-quality windows, and punctual, budget-conscious work. They highly recommended the company. Overall, Highland Window Company has established itself as a premier home improvement company with a long list of satisfied clients. Customers frequently mention the top-notch professionalism and the amazing transformation brought by the company's work, especially when replacing casement windows and sliding glass doors.
Great price, fast installation, high quality, friendly and professional service. They have continued to support our needs 9 years after the installation. Truly top notch!!
July 2025
I had the pleasure of using Marc and his team to replace my vinyl windows. They were on-time, attentive to detail, clean, efficient, and affordable. It was a no-stress experience. Highly recommend!
May 2025
Marc and his team were great. They installed windows and doors for us. He even re ordered a window that was delivered cracked and came right back.
