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Premium Windows and Doors
in Altadena

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Top-Quality Windows and Doors in Altadena

With Expert Installation

At Fusion Windows, we are proud to be Altadena’s trusted source for expert window and door sales and installation. With a commitment to precision, efficiency, and superior quality, we ensure every project meets the highest standards.

We offer a wide selection of premium windows and doors designed to complement Altadena’s diverse architectural styles, from classic to contemporary. Our products provide enhanced energy efficiency, durability, and aesthetic appeal.

Why Choose Fusion Windows and Doors in Altadena

  • High-Quality Products from Leading Manufacturers
    We offer superior placement windows and exterior doors from industry-leading manufacturers, ensuring your home benefits from exceptional durability, performance, and style.

  • Precision Installation by Experts
    Our experienced professionals deliver precise, detail-oriented installation, ensuring a perfect fit and seamless integration with your home’s design. Every project is customized to meet your specific needs.

  • Exceptional Value Without Compromise
    We provide high-quality products at competitive prices, giving you the perfect balance of superior craftsmanship and affordability, making your investment in new windows and doors truly worthwhile.

  • Personalized Service from Start to Finish
    Known for our customer-focused approach, we prioritize your needs from the initial consultation to final installation, ensuring a smooth, hassle-free experience that exceeds expectations.

What to Consider When Choosing Windows and Doors in Altadena

Altadena’s foothill location brings unique challenges, including temperature swings, occasional strong winds, and wildfire risks. Choosing durable, energy-efficient, and fire-resistant windows and doors helps protect homes while complementing the area’s mix of historic and modern architecture.

Wildfire-Resistant Materials

Since Altadena is near wildfire-prone areas, fire-rated windows with tempered glass and non-combustible door materials like steel or fire-treated wood are essential.

Classic and Custom Design Options

Many homes in Altadena feature Craftsman, Mid-Century, and Spanish Revival styles, so choosing windows and doors that align with architectural details maintains curb appeal.

Wind-Resistant Framing

Santa Ana winds can be strong and unpredictable in Altadena, making reinforced fiberglass or aluminum-clad window frames a smart choice for durability and stability.

Insulated Glass for Temperature Swings

With warm days and cool nights, double-pane or Low-E coated glass helps maintain indoor comfort, prevent heat loss, block UV rays, and reduce energy costs year-round.

Privacy and Noise Reduction

Some areas of Altadena have larger lots, but if you’re near busy streets, laminated glass and well-sealed frames can help block sound and enhance privacy.

We Installed

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Windows and Doors

 

Enhance your Altadena home with expertly installed windows tailored to your needs. Whether you prefer classic double-hung windows or modern options in fiberglass, wood-clad, or aluminum, our premium products are designed to complement your space. Enjoy protection from seasonal temperature swings, enhanced security, and stunning views that showcase the natural beauty of Altadena’s foothills.

Discover Brands at Fusion Windows

Milgard Windows and Doors

Milgard Aluminum Windows and and Doors

Milgard is a trusted brand renowned for its long-lasting, energy-efficient windows and doors. With a broad range of styles, materials, and finishes, Milgard products are designed to enhance both the appearance and functionality of homes. Whether you’re looking for vinyl, fiberglass, or aluminum options, Milgard offers exceptional durability and customizable solutions to suit your unique preferences.

Fleetwood Windows and Doors

FW-3200-T

Fleetwood specializes in high-end aluminum windows and doors that cater to modern and contemporary designs. Known for their minimalist aesthetics and superior performance, Fleetwood products are perfect for luxury homes and commercial spaces. The brand emphasizes innovation, durability, and precision craftsmanship, delivering products that merge style with practicality.

Andersen Windows and Doors

Andersen Sliding Patio Doors

Andersen is a leading brand in windows and doors, recognized for its commitment to quality, innovation, and sustainability. With a variety of materials, including wood, composite, and vinyl, Andersen offers versatile solutions that cater to traditional, modern, and custom home designs. Their products combine timeless aesthetics with advanced energy efficiency to meet diverse homeowner needs.

Marvin Windows and Doors

sliding french door

Marvin is synonymous with elegance and customization, offering premium windows and doors tailored to match any architectural style. Using high-quality materials like wood, fiberglass, and aluminum, Marvin focuses on delivering exceptional beauty, performance, and durability. The brand stands out for its attention to detail, innovative designs, and commitment to creating spaces filled with light and comfort.

Installations Before/After

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Reviews

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Carrie P.

Fusion Windows and Doors was the best decision I made for my West Hollywood condo! They guided me through every step, ensuring I had the perfect Andersen windows for my space. Their attention to detail and customer service went above and beyond. I shopped around at other companies, but none made me feel as valued as Fusion did. Highly recommend them for quality and professionalism!

Thomas C.

We chose Fusion Windows for our new construction project and couldn’t be happier. The showroom offered a variety of Andersen products, and they were incredibly knowledgeable. Even months after installation, when we needed touch-ups, the customer service was impeccable. The quality of Andersen windows and the professional service at Fusion makes them our top choice for future projects!

Jamie Y.

After researching several companies for our Andersen window replacement, I’m so glad we chose Fusion! From the initial consultation to the final installation, the team was friendly and professional. They helped me select the perfect windows that fit both my budget and style. The installation was quick, and they left my home spotless. I couldn’t be happier with how everything turned out!

Frequently Asked Questions

Altadena experiences warm summers and cooler winters, making energy-efficient windows a great choice. Double-pane, Low-E glass, and vinyl or fiberglass frames help improve insulation and reduce energy costs.

Yes, window replacements typically require a permit, especially if you’re changing the size or style. Homes in historic districts may also have additional requirements.

Windows with Low-E coatings, argon gas fills, and high-performance frames (vinyl, fiberglass, or wood-clad) offer excellent insulation to keep homes comfortable year-round.

Fiberglass and solid wood doors are popular for their durability, insulation, and classic appearance. Steel doors offer added security and weather resistance.

Standard installations take about 1–2 days, but custom or large-scale projects may take longer, depending on complexity and permit approvals.

Absolutely. We provide custom window and door solutions tailored to Altadena’s unique home styles, from Craftsman bungalows to modern builds.

Yes, some areas in Altadena require fire-rated doors due to proximity to the foothills. We offer options that meet local fire safety regulations.

Contact Us

Unlock the world of exceptional craftsmanship with Fusion Windows and Doors, an authorized dealer of industry-leading manufacturers.

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Locations We Serve

California Contractors License #956355

Leading dealer for Milgard, Andersen, Fleetwood, Marvin, LaCantina, Velux & Windsor.

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