Infinity From Marvin Replacement Windows For Your Long Island Home
A Comprehensive Product Review
0% financing
No income check
Up to 15 years
Monthly payments as low as $149
Infinity is Marvin’s dedicated line of replacement windows and doors. Marvin designed the Infinity line for homeowners who want to upgrade their old windows but not sacrifice quality or design.
Infinity windows use Marvin’s proprietary Ultrex® fiberglass for a durable, attractive frame that resists warping, fading, and cracking. And they back their products with a limited lifetime warranty.
Old windows and doors are less energy-efficient than modern products. Marvin designs its Infinity windows to reduce energy consumption in varying temperatures. Your house stays cool in summer and warm in winter. This is especially important given the sometimes challenging weather conditions in Long Island.
County Roofing Systems has been installing replacement windows on Long Island for over 35 years, so we know what we’re talking about.
Below, we’ll break down everything there is to know about Marvin’s Infinity line of windows, including the key features and whether the line is a good fit for your home.
Your new Infinity from Marvin installation starts with an in-home consultation with a local Infinity expert. (That’s us!) We assess your current windows and home structure to determine what types of replacement are necessary. We also discuss the different window styles and customization options available.
After you make your final decision, we take precise measurements to ensure your new windows fit properly. Marvin then custom-builds your new Infinity windows according to your specifications and delivers them to your home.
On installation day, CRS carefully removes your new windows and installs your new ones. We make sure there is a tight seal between the window frame and your walls to avoid drafts and leaks. We also add exterior and interior trims to enhance the visual appeal and ensure weather resistance.
When we finish, we do a broom clean up of the work area to get all debris off your property. Then we conduct a final inspection to ensure the installation is up to code and everything meets your expectations.
Infinity from Marvin Windows and Doors: Style Options
INFINITY FROM MARVIN WINDOWS
You can get Infinity from Marvin windows in the following styles:
- Double-Hung Windows: Two operable vertical sashes.
- Casement Windows: Hinged on the side and open outward with a crank.
- Awning Windows: Hinged at the top and open outward.
- Sliding Windows: One stationary pane and another that slides horizontally.
- Bay and Bow Windows: These styles project outward from the home.
- Picture Windows: Large, fixed-pane windows.
- Round Top: Add light and style above any window.
- Specialty Shapes: Infinity from Marvin also offers custom-shaped windows to match your home’s architectural style.
INFINITY FROM MARVIN DOORS
Infinity from Marvin Doors are a great alternative to your leaky, drafty old doors.
- Bifold Doors: Panels that fold open and close.
- Sliding Patio Doors: Elegant design for scenic views and abundant light.
- Sliding French Doors: The elegance of French doors with space-saving sliders.
- Swinging French Doors: Traditional, sophisticated French swinging doors.
What Makes Infinity from Marvin Windows Special?
Infinity by Marvin windows stand out for their exceptional combination of durability, energy efficiency, and customization options. Long Island homeowners looking for a quality window replacement should talk to us today about an Infinity replacement.
Ultrex® Durability
Infinity from Marvin replacement windows use Ultrex® fiberglass, a material renowned for its exceptional durability and strength. Ultrex makes Infinity windows eight times stronger than vinyl replacement windows.
Ultrex fiberglass has a very low expansion rate, even in extreme temperatures. This means your windows maintain their tight seal and integrity even through Long Island’s seasonal temperature changes. Ultrex is also highly resistant to warping, cracking, and fading over time.
Energy Efficiency
Marvin’s Infinity windows feature multiple layers of gas with insulating gas between the panes. This significantly reduces heat transfer. Windows also use Low-E glass coatings that reflect heat during the summer and retain warmth during the winter.
Customization Options
Infinity from Marvin offers a variety of window styles, such as casement, double-hung, and bay windows. Select from a wide range of interior and exterior finishes, as well as hardware, grille patterns, and screen options. And if you like the look of wood but not the maintenance, Infinity windows offer an EverWood® interior finish.
We know financing a home improvement project is stressful. That’s why we help our customers find financing at the best possible rates. Drop us a line to find out more about available home improvement financing offers.
How Marvin Infinity Compares to Andersen Windows: A Complete Breakdown
When shopping for premium replacement windows, most Long Island homeowners compare Marvin Infinity to Andersen—specifically the Andersen 400 Series and Andersen A-Series.
Both manufacturers produce quality windows. Both offer fiberglass options. Both deliver solid energy efficiency and durability.
So, what’s the difference?
Fiberglass Construction
Marvin Infinity uses Ultrex® fiberglass throughout the entire frame and sash. This pultruded fiberglass is exceptionally strong and dimensionally stable—it won’t warp, crack, or rot even in extreme temperature swings.
Andersen 400 Series combines a Fibrex® composite exterior with a wood interior. Fibrex is a wood fiber-polymer composite that performs well but isn’t pure fiberglass.
Andersen A-Series uses Fibrex composite throughout—no wood interior. This is Andersen’s closest competitor to Infinity.
What this means: Marvin Infinity’s Ultrex fiberglass is 8x stronger than vinyl and more dimensionally stable than wood-polymer composites. If you live near the coast (salt air) or experience extreme temperature fluctuations, pure fiberglass handles those conditions better over decades.
Glass Performance
Marvin Infinity offers triple-pane glass options with excellent U-factors (heat loss resistance) and SHGC (solar heat gain) ratings. Their glass packages are specifically engineered for energy efficiency.
Andersen also offers excellent glass performance, with Low-E4® and SmartSun™ glass options. Energy efficiency is comparable between the two brands at similar price points.
What this means: Both manufacturers deliver quality glass. Your choice depends more on specific glass package options and how they match your home’s solar exposure.
Customization & Design Flexibility
Marvin Infinity offers extensive customization—virtually any shape, size, or configuration. Custom arches, radius tops, specialty shapes—Infinity handles these well. You also get a wide range of interior wood species and exterior color options.
Andersen offers good customization but is somewhat more limited on custom shapes and sizes compared to Marvin. Their product lines are more standardized, which can mean faster delivery but less flexibility for unique architectural requirements.
What this means: If you have specialty windows (curved tops, unusual sizes, historical home matching), Marvin Infinity’s customization capabilities give you more options.
Warranty Coverage
Marvin Infinity provides a 20-year warranty on glass insulating units and a 10-year warranty on fiberglass and finish.
Andersen offers a 20-year warranty on glass and varying warranties depending on the series (10-20 years on Fibrex components).
What this means: Warranty coverage is comparable. Both manufacturers stand behind their products. The key difference is the material being warranted—pure fiberglass (Marvin) vs. wood-polymer composite (Andersen).
Price Comparison
Both Marvin Infinity and Andersen premium lines sit in the upper-mid to high-end price range.
Marvin Infinity: $800-$1,500+ per window installed (depending on size, glass, customization)
Andersen 400 Series: $700-$1,300+ per window installed
Andersen A-Series: $900-$1,600+ per window installed
What this means: Pricing is similar at comparable specifications. Neither is a “budget” option. You’re paying for premium materials, energy efficiency, and long-term durability with both brands.
Which Should You Choose?
Marvin Infinity makes sense if:
- You want pure fiberglass construction throughout (no wood or composite)
- You need custom shapes or specialty window configurations
- You’re in a harsh coastal environment (salt air, extreme weather)
- You value maximum design flexibility and customization
- You want a Long Island contractor experienced with Marvin installations
Andersen might be better if:
- You prefer the look of a wood interior (400 Series)
- You want a well-established brand with wide contractor availability
- You’re working with standard window sizes and shapes
- You’ve had good experiences with Andersen in the past
The truth? Both are excellent choices. Marvin Infinity edges ahead for pure fiberglass durability, customization options, and coastal performance. Andersen offers comparable energy efficiency with a more standardized product line.
Ultimately, the decision comes down to your specific needs, architectural requirements, and which contractor you trust to install them properly. But you can’t go wrong with Marvin Infinity’s proven fiberglass performance and superior design flexibility—especially if you’re investing in windows that need to last 30+ years in Long Island’s challenging climate.
Frequently Asked Questions about Infinity by Marvin
What kind of warranty does Infinity from Marvin offer?
Infinity from Marvin offers a Limited Lifetime Warranty on their windows as long as you own your home. This warranty covers both the window frames and any operating parts.
What's the difference between a full frame and insert replacement?
Full-frame replacements involve removing the entire window, including the frame, down to the studs. We do a full-frame replacement when customers want to change their window size or style. Full frame replacements may also be necessary if your home has structural issues that we must address before installation.
Are your window frames are in good shape and are you installing windows of the same size and style? Then we can do an insert replacement. An insert replacement is faster than a full frame replacement, as it requires less tear-down and rebuilding.
Can I install Infinity from Marvin windows myself?
Infinity from Marvin windows are not available for DIY installation. They require professional installation by certified local experts who are skilled in fitting windows correctly.
How do I get replacement windows installed?
Home improvement companies start with an in-home consultation to assess your needs. They then work with Marvin to create and install your custom-built window design.
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