Business Details
24 Years
experience
Emergency
services
Trusted Window & Siding Replacement Experts in Connecticut
Founded in 2002, Highland Window has built its reputation on delivering premium exterior renovation services across Connecticut. Our commitment to using top-tier materials, paired with expert craftsmanship, ensures every project meets the highest standards of quality and durability. Specializing in window, door, and vinyl siding replacements, we prioritize personalized service, tailoring solutions to match each homeowner's unique needs and architectural style. Backed by a lifetime transferrable warranty, our team guarantees precision in every installation, from energy-efficient windows to weather-resistant siding.As a BBB-accredited business, we emphasize transparency, offering no-pressure consultations and competitive pricing without hidden fees. Our owner, Marc Cowan, oversees every project personally, ensuring seamless communication and meticulous attention to detail from estimate to completion. With financing options available and discounts for seniors and first-time buyers, we make premium home improvements accessible while maintaining unwavering dedication to customer satisfaction.
Services
Windows
Doors
Siding
Roofing
Patio Doors
Entry Doors
Vinyl Siding
Window Replacement
Door Replacement
Siding Replacement
Details
- Year established: 2002
Highlights and features
- We offer personalized consultations with our experienced owner, Marc Cowan.
- Our team provides lifetime transferrable warranties on all installations.
- Serving all of Connecticut with no-obligation estimates.
- Accredited by the Better Business Bureau for trusted service.
- Available 24/7 for emergency service needs.
Associations and certifications
- Better Business Bureau
What people say
Fantastic job
Professional and courteous
No pressure
Excellent service
Highly recommend
Services
Window Replacement
Our window replacements enhance energy efficiency, curb appeal, and home comfort. Using fusion-welded vinyl frames, we deliver durable solutions with customizable styles like double-hung, casement, and sliding options. Each installation includes a lifetime transferrable warranty for lasting peace of mind.
Vinyl Siding
Premium vinyl siding options provide weather resistance, low maintenance, and aesthetic versatility. Available in shakes, clapboards, and scallop styles, our siding improves insulation and adds architectural character while offering 20% potential energy savings.
Entry Doors
Custom entry door installations combine security, energy efficiency, and style. We offer fiberglass, steel, and wood options with sidelights, transoms, or fanlights to complement your home's architecture and enhance curb appeal.
Patio Doors
Modern patio doors create seamless indoor-outdoor transitions. Our energy-efficient sliding and French door systems feature durable hardware, easy-gliding screens, and enhanced security features to boost both functionality and home value.
Roofing Services
We provide durable roofing solutions designed to withstand Northeast weather. Our systems combine high-quality materials with expert installation to ensure long-term protection, improved energy efficiency, and enhanced property aesthetics.
People
Marc Cowan
Owner
With over 20 years in exterior renovations, Marc Cowan founded Highland Window in 2002. He personally oversees projects, ensuring quality craftsmanship and customer satisfaction through transparent communication and expert recommendations.
Questions
What areas do you serve?
We provide services throughout Connecticut, including West Hartford, Bloomfield, Tolland, and surrounding communities.
Do you offer financing options?
Yes, we offer flexible financing plans to make home improvements accessible while maintaining competitive pricing.
What warranties do you provide?
All installations come with a lifetime transferrable warranty covering materials and workmanship for long-term protection.
How long does installation take?
Most window or siding projects complete within 1-2 days, with larger renovations typically finished in 6 weeks from order to completion.
Are estimates free?
Yes, we provide no-pressure, written estimates within 30 minutes at no cost for all Connecticut homeowners.
What sets you apart from competitors?
We combine personalized owner oversight, premium materials, and transparent communication with 24/7 emergency service availability.
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Reviews (6)
Alexandra Duchesne
May 15, 2022
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Marc was an excellent and very responsive communicator throughout the entire process! His pricing is fair and competitive and, as promised, there were no surprises from his end. His crew was thorough, professional and meticulous. We had all of the windows in our 1948 home (and 1960s addition) replaced at once. I get pretty anxious about having work done in our home, but Marc listened well, allayed my concerns and followed through on all of his commitments to us.
Our house had some surprises and complications that arose during our window install and Marc's crew was very balanced and thorough in their response and in finding solutions. His team does beautiful work, which impressed me throughout the project. We did have a couple of issues arise and Marc addressed everything right away, even personally coming by each time to make sure everything was done to our satisfaction. We give Highland Window Co. our highest recommendation!
Our house had some surprises and complications that arose during our window install and Marc's crew was very balanced and thorough in their response and in finding solutions. His team does beautiful work, which impressed me throughout the project. We did have a couple of issues arise and Marc addressed everything right away, even personally coming by each time to make sure everything was done to our satisfaction. We give Highland Window Co. our highest recommendation!
Carol Flanagan
Jan 24, 2022
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We were 100% satisfied with the professional installation of windows and doors done by Highland Window Company in our 100 year old home. Because it was such a large project, we carefully examined their work along with other companies in the area and collected competitive quotes. We were impressed with the number of positive reviews on Google and Angie's list and found that their personal attention, knowledge and pricing beat the other companies we evaluated.
We are happy to report they came to do the job in the specified time frame, their installers were top notch, they did everything they said they would do and more and making sure their client is happy with the work is a priority for them. They also contracted with us to install gutters and that was a success as well. We highly recommend this company.
We are happy to report they came to do the job in the specified time frame, their installers were top notch, they did everything they said they would do and more and making sure their client is happy with the work is a priority for them. They also contracted with us to install gutters and that was a success as well. We highly recommend this company.
Johnny Adamovich
Dec 10, 2021
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Marc has been very responsive and timely from start to finish. Really appreciate Marc's help with getting the requisite info ready to submit for the Energize CT rebate program. He and his installation team are true professionals. Very happy with our replacement windows and have already been recommending Highland to friends. Update: Just had our old basement windows replaced. Same level of service and craftsmanship as before. What a difference in the comfort level of the room. Should've done these with the first go around!
Alexander Jackson
Apr 25, 2021
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We couldn't be happier with the job that Marc Cowan and his team did with our windows. We had all 16 windows in our West Hartford home replaced by Highland, and they did outstanding work - quick, efficient and clean installation of high quality windows at a very reasonable price. Marc was a pleasure to work with - friendly, professional, responsive and trustworthy. Highly recommend Marc and his team!
Sarah Fite
Apr 14, 2021
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We've had a great experience with Highland, and have used them on three occasions now. Marc was very helpful and informative, and once we decided to go through with window replacement, he walked us through the timeline and maintained a professional and courteous relationship with us all the way through installation. We love our new windows! Easy to use and easy to clean. Thanks, Marc!
Jesse Samuels
Mar 23, 2021
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Last year, after they had previously replaced some of our windows, Highland came back to replace our siding. They did a beautiful job. Our house looks so much better and we think will have a higher resale value. Our heating costs were lower last winter with the insulation they added. The crew was fast, careful, pleasant, well-organized and neat and the owner, Marc Cowan, was a pleasure to deal with. We highly recommend them.
