Window Replacement Services
A+ Rated Window Company Serving Westchester, Rockland, Suffolk, Nassau & Fairfield Counties
Thermo-Seal has been providing high quality window replacement services to customers throughout the Tri-State area since 1985. The excellent craftsmanship and value of our windows are hard to beat. We’ll help you select the windows that are the right fit for your home, and then install them professionally for the peace of mind and energy savings you deserve.
Custom Windows to Suit Your Home
Our custom line of windows manufactured exclusively for Thermo-Seal by Harvey Building Products are available in a variety of beautiful styles to satisfy any need. In addition to the custom line we provide for your home, we are an Anderson Certified Contractor. This allows us to offer a wide variety of styles and materials, all with an energy efficient design and backed by our lifetime warranty. Material options include:
- Custom Wood
- Custom Vinyl
- Custom Composite (Fibrex®)
- Custom Aluminum
Save up to 50% on your windows project
Contact Information
Why Choose Thermo-Seal for your Windows?
Rely on Thermo-Seal to provide a window that’s maintenance free, durable, airtight, and energy efficient. Contact us today for a custom window plan that will bring comfort, beauty, and satisfaction to your family year after year.
Professional Installation - When you hire us for your replacement windows you will be working with a professionally trained and well experienced company. Our installers are fully trained and insured.
Customer Care - Our client’s satisfaction is our #1 priority. We make sure to get the job done correctly, and to the highest standards. You will never be disappointed with our work! We are highly rated across home improvement review websites, and love all of our positive feedback!
Andersen Certified Contractor - We have been vetted, trained, and backed by Andersen Windows & Doors, the industry's #1 most trusted and recommended brand of window and doors.
Exclusive Custom Line - We've partnered with Harvey Building Products to offer you an exclusive line of windows manufactured just for Thermo-Seal.
Lifetime Warranty - Thermo-Seal windows come with a limited lifetime warranty on all vinyl and mechanical parts. This warranty covers any mechanical defects or seal failures.
Benefits of Replacement Windows
Not only will you enjoy the beauty of your new windows, you will also:
- Cut monthly heating & cooling bills by up to one-third
- Stay warmer all winter, cooler all summer
- Reduce exterior noise infiltration
- Eliminate window maintenance
- Enhance the “curb appeal” of your home
Window Styles
Windows from Thermo-Seal can be designed to fit virtually any opening and are available in vinyl, wood, or composite. Choose from our most popular window styles, or let us know if you're looking for something custom.
Bay & Bow Windows
Beautifully designed & energy efficient, these windows are the perfect addition to any living room.
Casement Windows
Achieve maximum ventilation & clear views with the simple turn of a handle.
Double Hung Windows
These classic windows look great in any home, offering upper and lower sashes they are one of our most versatile models.
Garden Windows
A garden window is perfect for any kitchen & a perfect way to keep plants healthy.
Picture Windows
These windows fill any room with sunlight & offer unobstructed views of the beautiful outdoors.
Sliding Windows
Allow plenty of natural light in with these easy to open contemporary windows.
