a week ago
Had a fantastic experience with American Thermal and Iver. Bought a house earlier this year and we had signs of leaking after the first heavy rainfall. Iver quickly came out to assess the situation and provided a very reasonable quote compared to others. The team scheduled our roofing and were prompt on the day of the repair. The work they did was fantastic! Really appreciated their high quality work and great customer service. Highly recommend!
- Rebecca G
3 months ago
Stanley and Jerry door installers did an awesome job. Even the City inspector said he has never seen such a detailed job like this. I love these doors. Very professional. Also all the customer service (Dee & Ruby) were so helpful and get things done.
- M C
5 months ago
I recently had all new windows in my house installed, and I am extremely pleased with the outcome. I had explored other window vendors, but American Thermal came out on top for service, quality, and price. From the initial site visit to the day of installation, everything went smoothly. Bruno and Victor were incredibly hard-working, efficient, experienced, respectful, and friendly and were able to complete the job sooner than expected. I feel like I have a brand new house! I highly recommend American Thermal Windows!
- Maureen V

About us

American Thermal Window Products, Inc. is a family-owned and family-run business. Established in 1981, we began as a part-time operation by Iver Johnson Sr., a retired police officer of 31 years with the Chicago Police Department. 

With our showroom conveniently located at the intersection of Milwaukee and Central Ave. in the heart of the northwest side, American Thermal has served the entire Chicagoland area since its beginnings. This location offers displays of many different types of windows and doors, which include bay windows, bow windows, double hung windows, casements, garden windows, storm doors, replacement doors, etc. We also offer many services, which include full window and door installation and replacement, vinyl siding, gutters, soffits, and fascias as well as glass block windows. 

At American Thermal, we believe in giving each of our customers the personal attention he or she deserves. As a member of the Professional Remodelers Association, we strive to give you “top-notch” service with our own experienced carpenters and also the highest quality products from nationally recognized companies such as: Pella; Marvin Windows & Doors; SilverLine Windows & Doors, an Andersen Company; Great Lakes Window; Albany Door Systems; Larson Manufacturing; James Hardie; and Alside. We are also proud members of the Better Business Bureau.

Contact Us


Call now
  • (773) 774-3131


Get directions
5304 N Milwaukee Ave, Chicago, Il 60630
Chicago, IL 60630
United States

Business Hours

Mon:9:00 AM – 5:00 PM
Tue:9:00 AM – 5:00 PM
Wed:9:00 AM – 5:00 PM
Thu:9:00 AM – 5:00 PM
Fri:9:00 AM – 5:00 PM
Sat:9:00 AM – 4:00 PM
Get quote
Message sent. We'll get back to you soon.