What makes Infinity® from Marvin® windows and patio doors energy efficient?

Infinity® from Marvin® windows and patio doors are built with Ultrex® fiberglass frames and high-performance glass packages that reduce heat transfer, eliminate drafts, and help maintain consistent indoor temperatures. These features make them ideal for the San Francisco Bay Area’s variable climate.

Are energy-efficient windows worth it in the East Bay?

Yes. East Bay homes experience warm summers, cool winter nights, and microclimate changes throughout the region. Energy-efficient Infinity® windows help lower HVAC usage, reduce energy bills, and improve comfort year-round, especially in areas like Pleasanton, Walnut Creek, Livermore, and Oakland.

How do Low-E coatings improve window performance?

Low-E coatings reflect heat back into your home during winter and block heat from entering during summer. They also filter harmful UV rays, protecting flooring and furnishings from fading while improving overall energy efficiency.

Do Infinity® from Marvin® windows help reduce noise?

Yes. Dual- and triple-pane insulated glass, along with tightly sealed Ultrex® frames, helps reduce exterior noise—ideal for homes near busy streets, schools, or urban areas in the San Francisco Bay Area.

How long do Infinity® from Marvin® fiberglass windows last?

Infinity® from Marvin® windows are built from Ultrex® fiberglass, a material that is eight times stronger than vinyl and designed to resist warping, swelling, and fading. This ensures long-term performance and efficiency, even in coastal or sunny microclimates throughout the Bay Area.

Does Custom Exteriors install Infinity® windows and patio doors?

Yes. Custom Exteriors is a trusted Infinity® from Marvin® dealer and installer serving the East Bay and greater San Francisco Bay Area. Our AAMA Certified Master Installers ensure every window and patio door is properly fitted for maximum energy efficiency and long-lasting performance.

Will upgrading to Infinity® from Marvin® windows lower my energy bills?

Most homeowners notice lower heating and cooling bills after replacing older windows with Infinity® from Marvin® products. Improved insulation, advanced weatherstripping, and high-performance glass help reduce energy loss and reduce HVAC usage.

Energy Efficient Windows & Doors

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Experience Superior Energy Efficiency with Infinity® from Marvin®

If you live in the San Francisco Bay Area or East Bay, you know how quickly the weather can shift from cool coastal mornings to warm inland afternoons. That’s why choosing highly energy-efficient windows and patio doors is essential. At Custom Exteriors, we proudly install Infinity® from Marvin®, the industry’s leading fiberglass window and patio door brand engineered to maximize comfort, reduce energy loss, and deliver lasting performance.

Infinity® from Marvin® products are built with advanced insulating technology and durable materials specifically designed to handle the climate demands of Northern California homes. The result? Lower energy bills, improved indoor comfort, and a home that feels better year-round.

Why Energy Efficiency Matters for Bay Area Homeowners

Homes throughout the East Bay and San Francisco Bay Area face unique climate challenges including; sun exposure, coastal moisture, warm summers, and chilly winter nights. Poorly insulated windows and patio doors are a major source of energy loss, driving up heating and cooling costs.

Upgrading to Infinity® from Marvin® replacement windows and patio doors can dramatically improve your home’s overall performance. These quality products reduce heat transfer, eliminate drafts and air leakage, stabilize indoor temperatures, and lower energy consumption. Best of all, they enhance natural light throughout your home without compromising efficiency.

Upgrading to Infinity® from Marvin® means enjoying lower heating and cooling bills, fewer drafts and hot spots, and a quieter, more comfortable home. You’ll benefit from increased sunlight with better temperature control, improved indoor air quality, and the long-term durability and low maintenance that come with high-performance fiberglass construction.

When installed by Custom Exteriors, your new Infinity products become a long-term investment in your comfort and energy savings.
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Ultrex® Fiberglass: The Secret to Long-Lasting Efficiency

At the heart of every Infinity® from Marvin® product is Ultrex® fiberglass, one of the strongest, most thermally stable materials available for residential windows and patio doors. This stability ensures your windows and patio doors perform flawlessly for decades, delivering the energy savings you expect.

SUPERIOR INSULATION

Ultrex’s low thermal conductivity minimizes heat transfer, making it ideal for both warm East Bay summers and chilly Bay Area evenings.

EXTREME DURABILITY

Unlike wood or vinyl, Ultrex® won’t warp, swell, or degrade, even with the Bay Area’s mix of fog, sun, and temperature swings.

LONG TERM PERFORMANCE

Infinity products retain their shape and seal integrity, which is critical for maintaining energy efficiency over time.

Know Your Glass Options

High-Performance Glass Options for California Homes

Infinity® from Marvin® offers several energy-efficient glass packages designed to meet California’s strict energy standards and the needs of Bay Area homeowners.

Low-E glass coatings are microscopically thin layers applied to the glass that significantly improve energy efficiency. These coatings help reflect heat back into your home during the winter, block unwanted heat from entering during the summer, and filter harmful UV rays that can fade flooring, furniture, and décor. The result is enhanced natural light without sacrificing comfort or performance.

Dual- and triple-pane insulated glass units use argon-filled chambers between the panes to improve thermal performance. These advanced glass systems help maintain consistent indoor temperatures, reducing the strain on your HVAC system and ultimately lowering your monthly energy bills.

Warm edge spacers are engineered to minimize heat loss at the edges of the glass—an area where energy efficiency is often most vulnerable. By reducing thermal transfer around the perimeter, these spacers help improve overall window performance and enhance indoor comfort.

Ready to choose your new French door?Contact us or visit our showroom in Pleasanton today.

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Precision Engineering for A Tight Seal

Weatherstripping

One of the biggest contributors to energy loss is air leakage. Infinity® from Marvin® windows and patio doors are built with advanced weatherstripping systems and precision-engineered frames that seal tightly against the elements. This means fewer drafts throughout your home, better control over indoor humidity levels, reduced outside noise, and an overall more comfortable and consistent living environment.

Perfect for the windy hills of Castro Valley, fog-prone neighborhoods in Oakland, and the hot summer climates of Pleasanton, Danville, and San Ramon.
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Professional Installation Makes All the Difference

AAMA Certified Master Installers

Energy-efficient products are only as good as their installation. At Custom Exteriors, our AAMA Certified Master Installers ensure every Infinity® window and patio door is expertly fitted, sealed, and balanced for maximum efficiency.

Our experience includes more than 28 years and 26,000+ completed projects across the San Francisco Bay Area. When you choose Custom Exteriors, you’re choosing craftsmanship you can trust. Perfect for the windy hills of Castro Valley, fog-prone neighborhoods in Oakland, and the hot summer climates of Pleasanton, Danville, and San Ramon.

Whether you're looking to upgrade your entire home or replace just a few windows or patio doors, Custom Exteriors is the trusted choice for Bay Area homeowners seeking the highest level of energy efficiency and craftsmanship. Let us help you create a more comfortable, beautiful, and efficient home with Infinity® from Marvin®.
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Convenient Financing Options

Make your project more affordable with easy financing options. On approved credit.

Financing

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Five-Star Reviews

Read Our Testimonials

"Loved working with Custom Exteriors. Very responsive to inquiries. Precise in their measurements, estimate and timeframe for completion. Highly recommend them."

Brian I.

Tampa, FL

"Custom Exteriors provided a great product and good service in replacing 2 sliding glass doors and 2 other windows in my townhouse. One was a custom window that required extra work in refitting the plantation shutters to the new window. Although there were some bumps along the way, Jeff and his foreman Ryan excelled at follow up. I would recommend Custom Exteriors."

Carole N.

Tampa, FL

"Custom Exteriors did a wonderful job. The installation crew were neat and thorough. My salesman Mark kept me informed about delivery and the windows are beautiful, quiet and warm house. I’m very pleased."

Susan G.

Tampa, FL

"Kevin one of the owners of Custom Exteriors contacted me the following day and immediately tried to make things right. The first thing, I was impressed about was he took my call without hesitation. Many medium sized business will bounce me around to different people before finally being able to talk to the owner. He was an attentive listener and took to the time understand my needs and wants in an exterior entry door.His communication was top notch, sending me estimates the same day or the following day. He gave me choices in fiberglass doors: ProVia and Therma-Tru, hardware: Trilennium vs Emtek, and single point vs multiple point locks. I just ordered a ProVia doors through Kevin. This surprised both to my husband and me. Before contacting Custom Exteriors, we thought we were going to get a Therma-Tru door, but that totally changed once we the information we needed from Kevin. I get the sense that he truly wants to give customers options and information, but respects the customer's final decision. There is not high pressure sale pitch. Kevin wants customers to be informed and happy with the end product."

Hellen K.

Tampa, FL

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