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Trusted Window & Door Replacement in Longmont, CO
Longmont Window Company is a trusted local provider of window and door replacement services in Colorado. With extensive experience in window installation, door replacement, and energy-efficient solutions, we prioritize precision, customer satisfaction, and competitive pricing. Our team specializes in custom window and door installations, offering a wide range of options including vinyl, wood, fiberglass, and energy-efficient models.

We serve Longmont and surrounding communities, emphasizing integrity, transparency, and a 100% satisfaction guarantee. Our commitment to quality craftsmanship and personalized service has earned us a reputation as a reliable partner for homeowners seeking durable, stylish, and cost-effective solutions.
Services
Window Replacement Door Replacement New Windows Energy Efficient Windows Sliding Doors French Doors Window Installation Fiberglass Windows Wood Windows Vinyl Windows
Highlights and features
  • We offer affordable window and door replacement options tailored to your budget.
  • Our team prioritizes effective communication and listens to customer needs.
  • Precision in installation ensures long-term functionality and durability.
  • Locally owned and serving Longmont, Berthoud, and surrounding Colorado communities.
  • 100% satisfaction guarantee on all work, with a focus on integrity and transparency.
Services
Window Replacement
Our window replacement service addresses aging, damaged, or inefficient windows with precision. We offer custom solutions, including double-hung, bow, and energy-efficient models, ensuring improved insulation and aesthetics. Our team removes old windows carefully, installs new ones with exact measurements, and seals them for durability, enhancing your home's comfort and value.
Door Replacement
We provide expert door replacement for interior and exterior needs, including sliding glass doors, French doors, and decorative options. Our process ensures precise fitting to prevent malfunctions, improve security, and enhance energy efficiency. Each installation prioritizes durability and style, tailored to your home's design and functional requirements.
Energy Efficient Windows
Energy-efficient windows reduce utility bills by minimizing heat loss and gain. We offer ENERGY STAR-rated models in vinyl, wood, or fiberglass frames, designed to improve insulation and qualify for tax incentives. Our installation ensures optimal performance, helping homeowners save money while maintaining comfort and sustainability.
Sliding Doors
Our sliding door installations combine security, functionality, and modern aesthetics. We use high-quality materials to ensure smooth operation and durability, preventing common issues like sticking or misalignment. These doors enhance natural light and provide seamless access to outdoor spaces, ideal for patios and living areas.
French Doors
French doors add sophistication and spaciousness to any home. We install durable, weather-resistant models with precise sealing to prevent energy loss. Perfect for entryways or room dividers, our French doors offer enhanced security, ease of access, and timeless design tailored to your architectural style.
Questions
What services does Longmont Window Company Company offer?
We specialize in window replacement, door replacement, new window installations, energy-efficient windows, sliding doors, French doors, and custom solutions for homeowners in Colorado.
Do you provide energy-efficient window options?
Yes, we offer energy-efficient windows that reduce heating and cooling costs while qualifying for potential tax deductions.
What areas do you serve?
We serve Longmont, Berthoud, Firestone, Fort Lupton, Frederick, Johnstown, Lafayette, Louisville, Mead, Milliken, and Platteville.
Do you offer a satisfaction guarantee?
Yes, we stand by our work with a 100% satisfaction guarantee and a comprehensive warranty on all installations.
How can I schedule a consultation?
Contact us at 720-204-7055 or through our website to schedule a free in-home consultation and estimate.