INSIST ON A
CERTIFIED
CONTRACTOR

Andersen does.

Contact Us

Custom Windows

For any style, function and budget, find the perfect window that works for you. Proper installation is critical to the performance of every custom window. Andersen Certified Contractors are trained by Andersen to install Andersen® windows and patio doors.
Custom Windows | American Thermal Window | Andersen Windows Certified Contractor
Energy Efficient
Andersen Corporation was awarded the U.S. Environmental Protection Agency's ENERGY STAR Partner of the Year–Sustained Excellence Award in 2024.
Environmentally Friendly
Green Builder Readers' Choice 2018, Awarded Most Environmentally Friendly 7 Years Running 2011-2018
Peace of Mind
Our longstanding practice of making products that perform year after year allows us to offer some of the best warranties in the industry.
Designed with Your Needs In Mind
With a variety of collections and customization options, we've got reliable products that create the style you're trying to achieve.
No-Obligation
An Andersen Certified Contractor will provide you with a no-obligation quote.

Where you can find us

American Thermal Window

Location 1

Address: 5043 N Milwaukee Ave , Chicago, IL, 60630
Phone: (773) 774-3131
Email: [email protected]
Business Hours:

Monday to Friday: 9:00am-5:00pm

Saturday: 9:00am-4:00pm

Sunday: CLOSED

Location 2

Address: 6619 W Jarvis Ave , Niles, IL, 60714
Phone: 8472599099
Email: [email protected]
Business Hours:

Monday to Friday: 9am-5pm

Saturday: Closed

Sunday: Closed