Business Details
27 Years
experience
Your Trusted Partner for Window, Door & Siding Replacement in Maryland
Kelemer Brothers, established in 1999, is a family-owned business specializing in exterior home remodeling with a focus on replacement windows, doors, and siding. With over 50,000 installations, we prioritize quality, transparency, and customer satisfaction. Our team, led by owners Joe and Gabriel Kelemer, offers lifetime warranties, energy-efficient solutions, and personalized service without high-pressure sales tactics.We serve Maryland, Virginia, and Washington D.C., emphasizing community investment and trust through 100+ verifiable references and a 97% customer satisfaction rate. Our commitment to excellence is reflected in our A+ BBB rating, 11-time Angies List Super Service Award recognition, and partnerships with trusted brands like Vytex Genesis Windows.
Services
Energy Efficient Windows
Front and Exterior Doors
Home Siding
Replacement Windows
Genesis Windows by Vytex
Details
- Year established: 1999
Highlights and features
- Over 20 years of experience with 50,000+ window installations.
- Lifetime Worry-Free Warranty on all window and door installations.
- No-pressure consultations with owners Joe or Gabriel Kelemer.
- 100+ verifiable customer references and 5-star reviews.
- Family-owned business reinvesting in local education and social services.
Associations and certifications
- BBB
- Angies List
- MHIC
What people say
Excellent service
Quality installations
Lifetime warranties
No pressure
Family-owned
Services
Energy Efficient Windows
Our energy-efficient vinyl windows reduce heating and cooling costs by up to 20% while enhancing home comfort and curb appeal. Featuring advanced insulation technology, these windows include options like double-hung, casement, and Genesis by Vytex models. Backed by a lifetime warranty, they combine durability, low maintenance, and aesthetic versatility for long-term value.
Front and Exterior Doors
Upgrade security and style with our steel entry doors and sliding patio doors. These energy-efficient options feature reinforced frames, weatherstripping, and lifetime installation warranties. Our team ensures precise fitting and seamless integration with your homes exterior, enhancing both functionality and resale value through durable, modern designs.
Home Siding
Transform your homes exterior with durable vinyl or fiber cement siding. Our solutions improve insulation, reduce energy costs, and resist weather damage. Paired with window and door upgrades, new siding creates a cohesive thermal barrier while boosting curb appeal and property value through long-lasting, low-maintenance materials.
Genesis Windows by Vytex
Genesis Windows by Vytex offer superior durability and energy efficiency with welded corners, insulated frames, and optional Triple Silver LoE glass. These premium vinyl windows reduce air infiltration by 5x compared to wood, lowering energy bills and improving indoor comfort. Installed with a lifetime warranty, they combine advanced technology with aesthetic customization.
Replacement Windows
We specialize in full replacement window installations, including bay, bow, casement, and double-hung styles. Our process ensures precise fitting, energy efficiency, and minimal disruption. Backed by a 110% price assurance guarantee and lifetime warranties, our windows enhance comfort, reduce noise, and increase home value through expert craftsmanship.
People
Joe Kelemer
Co-Owner
Joe Kelemer co-founded Kelemer Brothers in 1999, prioritizing customer trust and quality installations. A volunteer firefighter, he focuses on community investment and local social services while overseeing project estimates and designs.
Gabriel Kelemer
Co-Owner
Gabriel Kelemer co-owns Kelemer Brothers, bringing over 20 years of hands-on experience in window and door installation. He ensures technical excellence and customer satisfaction by personally supervising projects and maintaining rigorous quality standards.
Questions
What services does Kelemer Brothers offer?
We specialize in energy-efficient window and door replacement, siding installation, and exterior home remodeling across Maryland, Virginia, and Washington D.C.
Do you provide warranties?
Yes, we offer a Lifetime Worry-Free Warranty on installation and a Limited Lifetime Glass Breakage Warranty for added peace of mind.
Are financing options available?
Yes, we provide financing solutions and accept credit cards to make home improvements more accessible for our customers.
How long does installation take?
Most window and door installations are completed in one day, with minimal disruption to your daily routine.
Can I see examples of your work?
Yes, view our portfolio showcasing 50,000+ installations and customer testimonials from satisfied homeowners in the region.
Do you serve areas outside Maryland?
Yes, we serve Washington D.C., Virginia, and surrounding communities, ensuring consistent quality and service excellence.
Reviews (6)
Veronica Namnun Cool
Dec 03, 2021
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EXCEPTIONAL! I have been searching for a contractor for over 3 years to replace our windows. Joe responded immediately, professionally and with very fair pricing. The crew was prompt, neat, organized and finished the entire project in one day. Highly highly recommended.
Lisa Ercolano
Oct 25, 2021
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We had the Kelemer Bros. replace our back door and found them to be completely professional and wonderful to work with, from start to finish. Their installer was on time, pleasant, and meticulous about his work. He even cleaned up thoroughly afterwards. We highly recommend doing business with KB!
Nikki Martin
Oct 07, 2021
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I am so grateful for Joe and his guys. From Joe’s first phone call to to last goodbye it was complete professionalism. When the crew came in to replace the windows everyone was very nice and respectful and made… sure the house was clean when they left. Joe came back, did a final walk through to make sure everything was perfect. Thank you so much for all your hard work!
Janeen Johnally
Jul 10, 2021
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I had a wonderful experience with Kelemer Brothers. I previously met with 3 other window companies for quotes, but some of their sales tactics left me uncomfortable. I’ve hired a lot of contractors in the past… 3 years and Kelemer Brothers was by far the most personable experience of them all. No pressure and no unsolicited marketing emails/calls. I had 4 windows and a sliding glass door installed and I love how they turned out. Joe (Kelemer) even gifted me a bouquet of roses on installation day, as a token for being a new customer. THAT it is the personal touch that you just won&rsquo
Lana Batsenko
May 28, 2021
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Great experience, very professional and friendly. Did a great job. Very quick and clean. Highly recommended!
Linda McQuiston
May 12, 2021
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Just had 14 Windows installed yesterday. It was the easiest home improvement project I have done so far. From no pressure, honest sales from Gabriel Kelemer at a very fair price. To quick professional installation from a crew that was incredibly hard working and respectful.There was not a thing I was not pleased with. I would highly recommend this company.
