Frequently Asked Questions

Do you have a specific question? Ask us here.

Why choose Thermal Windows, Inc.?

Answer: Thermal is one of the top window manufacturers in America. Our products are made in Tulsa and shipped throughout the United States. As a local customer, you benefit from our nearby location, our impeccable quality and factory warranty backed by our own trained technicians. When you do business with Thermal Windows, your money stays in Oklahoma.



How long has Thermal Windows, Inc. been in business?

Answer: Thermal Windows, Inc. is in its fourth decade of quality window design and production. Founded by the late Bob G. Pool in 1979, the company has grown steadily over the years. Annual sales now exceed $30 million. Showroom, headquarters and manufacturing operations in Tulsa, Oklahoma occupy 235,000 sq.ft. We have 200 employees, and ship our products throughout the United States. There are company showrooms in Tulsa and Oklahoma City, as well as dealers in nearly every state.



How do I check your reputation?

Answer: Talk to your family, friends, and neighbors. We have thousands of satisfied customers throughout Oklahoma. "Word-of-mouth" and referrals are very important sources of business for us. Click here to see our Better Business Bureau record. You can also check us out on Houzz.com.



What brands do you carry?

Answer: We manufacture our own brand: Thermal Windows. We also manufacture our own sliding glass doors and terrace/balcony doors. In addition, we are dealers for Larson brand storm doors and ThermaTru entry doors, french doors and patio doors.



Do you have a showroom open to the public?

Answer: Yes. Our showroom is at 12805 E 31st Street in Tulsa, Oklahoma. Visiting our showroom is one of the best ways to experience the quality of our products and to see the many styles and options we offer.



What are your showroom hours?

Answer: Our Tulsa showroom is open from 8am-6pm Monday thru Friday, and 9am-1pm Saturdays. We are closed on Sundays.



Do you offer free estimates?

Answer: Yes. Our salespeople are courteous and punctual. They are our employees, and we train them to listen to your concerns and design goals. We do not perform lengthy, rehearsed presentations or high-pressure sales pitches. They will give you an exact price quote with no "if you sign today" gimmicks. You will have plenty of time to decide if Thermal is the right company for you.



Do you offer payment options?

Answer: We accept checks, cash, debit cards, Visa, MasterCard, Discover and American Express credit cards. Financing is available, subject to credit approval.



Do you have a size chart or a list of standard sizes?

Answer: Every window we make at Thermal Windows, Inc. is custom-manufactured to order. Therefore, we do not have standard sizes. This also applies to our sliding glass doors and terrace doors.



Which is better: Vinyl or Thermal-barrier Aluminum?

Answer: Thermal Windows, Inc. manufactures both types of windows. Vinyl windows insulate very well, and they are economical to manufacture. Therefore, they are usually the least-expensive windows. Our aluminum windows are manufactured from close-tolerance aluminum extrusions. They have lower air leakage than most vinyl windows, and the metal extrusions are much stronger than vinyl. In addition, they have a higher resistance to heat. Click here to learn more about thermal barriers.



Do windows cause condensation?

Answer: Condensation usually appears in cold weather on the glass and/or frames of windows and sliding glass doors. While you might be tempted to blame the windows, you shouldn't. The condensation is the result of excess humidity in your home. The glass only provides a visible cold surface on which humidity can condense. The important thing is to reduce indoor humidity before it causes hidden, costly problems elsewhere in your home. Click here for much more information on the causes of condensation and ways to eliminate it.



Are pet doors or doggie doors available in your products?

Answer: Some of our sliding glass doors and Therma-Tru doors can accommodate dog doors. The best way to find out what we can do in your situation is to call us toll-free at (800) 259-7580 between 8am and 6pm Central time and ask one of our friendly sales representatives.
Or, click here to submit your question online and we will try our best to give you an answer promptly.




If you have any questions about commercial and architectural products, please contact Seth Patterson, Commercial Sales Manager, at spatterson@thermalwindows.com.

If you live in Oklahoma and have any questions about residential products for your own home, please contact Ben Castagna, our Residential Sales Manager, at ben@thermalwindows.com.


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This page on the EnergyStar.gov website is a good source of additional information.