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Window Contractor White Plains NY - Installation & Replacement

AT GIANT, we are proud to provide White Plains NY homeowners looking to upgrade or modify their home’s windows; access to our comprehensive window installation and window replacement services.

We install quality, modern windows that effortlessly add style, comfort, and ecological cost-savings to the homes they adorn. My father taught me great construction starts with great products and that is why I am proud to call Marvin windows and doors GIANT’s window of choice.

Marvin Window Contractor White Plains NY, we pride ourselves on providing local homeowners exactly what they are looking for in a window – an energy-efficient window with an unmatched combination of beauty and toughness.

Window Contractor White Plains NY

Window Contractor White Plains NYMarvin Windows and Doors were born from The Marvin Companies’ century-long heritage of service, craftsmanship, and quality with a focus on all-out performance.

Marvin, a family-owned company just like our own, is proud to manufacture the most innovative fiberglass windows and doors on the market, backed by top-notch customer support and incomparable value.

Marvin’s windows and doors are inspired by how people live and that goes for homeowners right here in White Plains, I have Marvin windows on my own White Plain’s home and they perform great through every season! My family and I love them and I think you will too!

Marvin Windows - Westchester NY

Beautiful design

Every detail is thoughtfully considered in stunning designs with the highest levels of architectural correctness.

window replacement westchester ny

Innovative touches

Signature windows and doors make your life easier with considered, inventive features.

window replacement westchester

Wide range of options

The Marvin Signature Collection offers our most flexible range of product types, sizes, configurations, and design options.

Window Contractor White Plains NY


Window Contractor White Plains NY
Window Contractor White Plains NY

Whether you’re unsure if you need to replace your current windows or are wondering what your best next steps are, the GIANT team is here to help. Feel free to contact us at any time.

Marvin offers a nice,  five-step approach, complete with helpful tools that make the window replacement process clear, organized and streamlined.

Our team will be with you every step of the way! Today, we bring three generations of experience in our local market to the table. We are a local family business with our thumb on the pulse of the industry. We understand the White Plains NY windows market better than most. We know what the windows need to deliver and what homeowners are looking for.

GIANT guarantees 100% warranty compliance on all of our Window installs, giving homeowners peace of mind that their investment is a safe and smart one.



  1. Giant was the first Authorized replacement contractor in our market.
  2. Marvin has trained our window replacement teams on all factory-certified installation protocols.
  3. In 2018 we were named ARC of the year the first in our market!
  4. When GIANT installs your Marvin windows, our labor comes with a lifetime warranty.

ENERGY STAR qualified window + door solutions!

westchester ny window replacement

Marvin Windows are Energy-efficient!

Marvin windows can help reduce your utility bills and make your home more comfortable.

Not to mention the peace of mind that comes with knowing you’re helping the planet by minimizing environmental impact. Marvin offers a variety of window and door options that help you achieve long-term performance and energy cost savings, through each of our four seasons!

Frequently Asked Questions about Windows Energy Efficiency

What do I need to know about window energy efficiency?

Well, to start replacing your Westchester County home’s windows with energy-efficient ones can help reduce your utility bills, but the benefits go much further.

Choosing energy-efficient windows makes your home more comfortable, as it is your windows or doors performance that determines how much heat comes in and how much cold air escapes out through the windows; in the summer and winter months.

How do I know if a window or a door is energy efficient?

Certification programs such as those administered by the National Fenestration Rating Council (NFRC) and ENERGY STAR provide ratings designed to indicate a window or door’s efficiency.

Various performance ratings – like U-factor and Solar Heat Gain Coefficient – measure a product’s effectiveness in insulating and blocking heat from the sun, among other things.

Are tax credits still available for energy-saving window and door replacements here in Westchester County?

Tax credit programs change often. To stay up-to-date with the latest, visit

Marvin Window Performance


Simply put, U-factor measures how well a window keeps heat inside your home. It’s a measure of total heat flow through a window or door from room air to outside air. Lower numbers indicate greater insulating capabilities.


If U-factor denotes how much heat leaves your home, the Solar Heat Gain Coefficient (SHGC) measures how much radiant heat enters your home.

All you really need to remember is– The lower the number, the less heat a window lets in.


The amount of visible light transferred through a window.

Low E coatings can reject solar heat gain without significant reduction to visible light passing through the glass.


Marvin windows and doors are inspired by how people live.

Explore Marvin’s three product collections organized by degree of design detail, flexibility, and customization possibilities.