Built for Life®
Replacing your windows and doors is something you should only have to do once. That’s why Infinity harnesses the strength of Ultrex® fiberglass to create beautiful windows and patio doors made just for your home.
Installed by local experts and backed by an incredible product warranty1. Let's get started on the home of your dreams today.
Receive a 10% Costco Shop Card* on Qualifying Infinity from Marvin Purchases
Strength, Durability, and Beauty – The Infinity Difference
-
Strength
Our Ultrex® fiberglass is 8x stronger than vinyl and expands 87% less. That means your windows and doors resist the leaks and stress cracks that limit performance and durability.
-
Style
Infinity offers timeless style with beautiful shapes, quality hardware, and a variety of color options. Our EverWood® finish looks and stains like wood, without the maintenance, and the strength of Ultrex means slimmer frames, more glass, and bigger views.
-
Value
Because replacing your windows and doors is something you should only have to do once, we offer an incredible Limited Lifetime Warranty1 to ensure your investment is a good one. As a Costco member, the home of your dreams has never been more affordable.
Getting Started is Easy
Our local experts are ready to answer your questions and find the right windows and doors for your home.
-
1. Schedule your complimentary in-home consultation. Call 1-888-462-2969 or submit your information by selecting the button below.
-
2. An authorized Infinity consultant will meet with you to help choose the right replacement windows and doors for your home.
-
3. An authorized Infinity consultant will take measurements and provide a detailed quote for your project.
-
4. An authorized Infinity consultant will fulfill your order and install your new windows and doors.
Receive a 10% Costco Shop Card* on qualifying Infinity from Marvin purchases
Windows and Patio Doors to Bring New Life to Your Home
Replacing your windows and patio doors is an investment in the comfort, safety, and look of your home. That's why everything we make is built just for your space. And Built for Life.
Windows in Every Shape and Size
Strength, durability, and big views are just the beginning. Complement or refresh your home’s character and architecture with Infinity’s wide variety of design and finish options.
Patio Doors That Fold, Swing, and Slide
Discover where form meets function and enhance the style of your home with a new Infinity patio door. Find your ideal look with our wide selection of design options across color, glass, and hardware.
See the Possibilities
From light and dark finishes that match your style to the look of wood without the maintenance, Infinity has something special for every home in every climate.
Explore Our Selection of Windows and Doors
Shapes, finishes, and features to fit your home. All built with the incredible strength and beauty of Ultrex® fiberglass.
Do I Need New Windows or Doors?
The life expectancy of your windows and doors depends on several factors: what they're made of, how they were installed, your climate, and more. But how will you know when to replace them?
Water damage?
If you’ve seen water between the glass panes, leaking, water stains, or evidence of wood rot, you may need new windows. Moisture in and around your windows and doors can lead to mold, mildew, and warping.
Hard to open and close?
Older windows and doors can be difficult to open and close – that’s frustrating. But doors and windows that don’t work properly can become a safety issue, as well.
Too cold or hot?
If you need to wrap up in a blanket to sit by your windows, it may be time to upgrade to something more energy efficient.
Not your style?
Older, damaged windows probably aren’t the look you’re going for. Infinity’s timeless style brings new life to your home.
Experience the Difference
Upgrade your existing windows and patio doors with something similar, or transform your space with something completely different. With so many shapes, colors, and sizes to choose from, your only limit is your imagination.
Why Fiberglass?
Infinity’s proprietary Ultrex® fiberglass is an unmatched combination of strength, beauty, durability, and stability in all climates.
Ultrex vs Vinyl
Vinyl can warp and shift under everyday conditions making vinyl windows difficult to open and close and affecting their all-around performance. Ultrex resists sticking, swelling, and warping so your windows and doors will continue to easily open and close.
Ultrex vs Wood
Wood windows offer a classic look that, depending on the environment, can require more maintenance and care. Infinity’s EverWood® option captures the beautiful details and profiles of wood - without the maintenance.
Ultrex vs Other Composites
The Ultrex fiberglass frame is stable, expanding at virtually the same rate as the glass. Vinyl and wood/vinyl composites expand more than twice as much as glass, which can compromise energy efficiency and performance.
Trust The Local Door and Window Experts
Infinity windows and doors are installed by local independent experts. They know the homes and building codes in your community because they’re your neighbors. You’ll receive a complimentary in-home consultation, get all your questions answered, and receive an easy-to-understand project quote for your home.
A Legacy of Quality, Service, and Innovation
Infinity is part of the Marvin family of brands. For more than 100 years, Marvin has been a family-owned window and door manufacturer helping people live happier and healthier in their homes. Marvin’s products have won countless awards and are used around the world, offering homeowners a greater connection to their surroundings.
Not Yet An Executive Member?
Upgrade before you make your purchase to earn an annual 2% Reward (up to $1,000).** Visit the membership counter at your nearest location or Costco.com to upgrade today.
**Terms, conditions and exclusions apply. See Costco.com for details.
Maximize Your Membership
Get all the Costco benefits you already love, plus earn cash back rewards everywhere you shop with the Costco Anywhere Visa® Card by Citi.
Learn More
on eligible gas and EV
for the First $7000 per Year and then 1% thereafter
on all restaurants and eligible travel
on all other purchases from Costco and Costco.com
on all other purchases
Remember Services
This home improvement product and service may not be available in all locations. Please call Costco at 1-888-462-2969 for availability in your area.
In some locations, Costco only sells the product and Costco does not offer or perform installation services. For installation in those locations, Costco will recommend a dealer and you will need to pay the dealer separately.
This Costco program is for residential replacement applications only. *Costco Shop Cards are not redeemable for cash, except as required by law. The Costco Shop Card amount is based on the pretax price of installed purchases through the Costco Home Improvement Installed Products program, and some exceptions apply, such as preparation work or additional products purchased. Please see your dealer representative for details. Digital delivery of the Costco Shop Card(s) is the standard method and may take up to 7 days after Costco’s receipt of your signature on the project completion paperwork. The email will be sent from costco@digitalshopcard.costco.com. You may also opt out of digital delivery; however, processing plastic Costco Shop Cards may take up to 4 weeks to arrive at the mailing address you provided.
For Shop Card FAQs, please visit the Costco Customer Service or click here. Returns:
Special order merchandise, custom merchandise, and installed merchandise, cannot be returned or refunded after the expiration of your right to cancel period. This is an exception to Costco's standard return policy.
Full Terms and Conditions provided at consultation. See your Infinity dealer representative for details. 1For manufacturer's product warranty information, including maintenance and care guidelines, please contact Infinity at 1-800-533-6898 or visit www.infinitywindows.com/warranty. Costco Contractor License/Registration List