Thermal Industries Windows Reviews

thermal industries windows reviews

Thermal Industries has an interesting history in the replacement window business.  They were the first company to introduce custom made replacement windows in the 1960’s and they were one of the first companies to offer windows with tilt-in sashes for easy cleaning.  Thermal Industries windows have a long history of innovation.

Today Thermal Industries is owned by Atrium Windows and they are  based in Pittsburg, PA.  Although Thermal Industries was part of the Atrium Windows bankruptcy in 2010 they continue to operate and they have honored their warranties which is something that many other window companies did not do after filing bankruptcy.  We know any company can fall on hard times, it’s important to us that they stood by their customers.

We’ll be reviewing the full line of Thermal Industries windows including the following models:

  • 9000 Series
  • 7000 Series
  • 5000 Series
  • 3000 Series
  • SilentGuard by Thermal

As you’re considering new Thermal Industries windows keep in mind that the great story about being a pioneer in the replacement window business is interesting, but it’s not all that relevant to todays market.

What if I have more questions about Thermal Industries windows?

We can help!  Find our Thermal Industries windows FAQ page here.  If you don’t see the answer to your question post a comment and we’ll answer your question for everyone to see.

What should you do if you think I’m wrong about something?

Post a comment below and let us know. It’s always our goal to post accurate info along with our opinions and I’m interested in your opinion as well.

How can you find a great window company?

When shopping for windows I do always suggest finding a great installation company before you fall in love with any particular window model. There are plenty of great window options out there but not as many local companies that are great to work with.

To know which companies to avoid you can find common window sales tactics here. That’s become one of the most popular sections on the site.

Remember, for more great window company info you can find our suggestions for the best local companies in 2022 right here. Wherever  you are around the country we can probably help with a recommendation.

There’s no need to work with a company that gives you the run-around or makes the process difficult. There are plenty of fish in the sea as they say. The best way to get started is to check out our list of great window companies here.

Watch out for some of the high pressure sales tactics often found in the window business and be sure to read through the best replacement windows reviews online here.  Enjoy!

Update: We now have more recommend LOCAL window companies than ever before.   Click here to see who we recommend in your town.  It's 100% free.  You'll thank me.  There is no better resource; you're going to love it.  See for yourself right here.  

46 thoughts on “Thermal Industries Windows Reviews”

    1. S. Shroyer, Columbus , Ohio. Installed $10,000 in casement windows. 11/2007. Bronze exterior. The sun heat melts the frames and the weight of the glass bears down warping the sash. We have battled to several sashes replaced over the years. Now glass is losing seals and Thermal says ” will send glass in no sash ??” What good is no frame, Lifetime warranty and 30 years on the glass a lie. We are going to have to replace all the windows AGAIN! Acomplete rip – off!

  1. Which is the better replacement window out of the following two manufacturers?

    Thermal Industries 5000 series or Simonton 5500 series?

    Thank you!

  2. We are trying to find the company – we believe it is you that Expo2000 from Glenview, Il. dealt with when we replaced 4 of our home windows. The windows are still great!!! We have a problem with the crank shaft that opens one of the windows – it no longer works properly.

    Please advise!

  3. We bought a house that has thermal industries on hand levers. We are having problems with a few of them not staying up. Also we have another window that has fog between layers. Ate these still under warranty. Thank you

    1. I don’t know. Thermal Industries has been around a long time so I expect they’ll take care of you. Give them a ring and let us know what they say. Someone else might be wondering the same thing.

      1. I have just found out that Thermal Industries is no longer in business and your warranty are now worthless.

        1. There are two different companies and we do need to make that a little more clear. Unfortunately the smaller window manufacturers do come and go sometimes and that leaves people out of luck. I do recommend working with larger manufacturers to try to avoid that issue. Let us know if there is anything else we can do to help out.

    2. I too have Thermal Industries windows in my home and overall love them. One large window however has a bad seal, but TI wants me to produce a copy of the warranty (which I don’t have as the installer didn’t provide it and went out of business less than a year after installation). So TI wants me to pay a few hundred dollars for a large one-piece window with a bad seal even though their warranty for years now has stated seal coverage for at least 20 or more years. No, I’m not impressed with the after-sale support at this point in time.

      1. Where did you get the number or address to contact them, Seals in my windows are leaking and moister is in between the glass, Waiting for the person who sold them to me to respond(Renew Windows)

        1. Google is your friend:

          Thermal Windows & Doors
          3700 Haney Court
          Murrysville, PA 15668
          (800) 245-1540 (Toll Free)
          (724) 325-6100

          1. I purchased and had installed windows in my house outside Omaha in 2019. The company that sold and installed was Energy Armor in Lincoln NE. The manufacturer that was Thermal Industries. Both companies seem to have good out of business. The company in Lincoln did when the owner died and his wife closed it down. Its seems that Thermal Industries in PA also closed or sold its asset. I assume someone bought the assets and continues to manufacture their windows. I had a warranty issue back in 2017 when weather stripping was not installed in one window and it leaks cold air and the company never made it out to repair that window. I would like to get it fixed and don’t expect to have it done for nothing

    3. I also have a broken seam with a large window from Atrium. It was bought through Lowes and although they said they would give me new glass, I have to install it myself, (they say labor is not covered under warranty after 2 years)
      I will fight this as I believe they should take responsibility if they are going to remain in business.

      1. Many warranties out there don’t cover labor for an issue like this. It’s probably not too expensive to pay them to install it. Might be worth saving your time and frustration as it’s not the easiest thing to do. Once you’ve done 100 of them it is pretty simple, but the first one might be a little tricky.

  4. I am going to be replacing windows at my home with the 9000 series sliders. Saw them in the showroom and they seem like good windows at a good price.

  5. I purchased the etched diamond shaped glass windows for my home in 1999. They were beautiful, now I have at least 8 with the seals broken. Now, there is no one in Columbus, Oh that does these repairs and from what I am told they will be several hundred dollars for each window. That seems ridiculous to me to be that expensive and I have only had them 17 years? I need help in getting these replaced. I am very disappointed that they only lasted this length of time… especially for the quality of window that I thought I purchased.

    1. Have you checked with Thermal Industries? They’re still around. Maybe go straight to the source. Let us know what they say.

  6. Location: Chicago area. Forget about the quality of the windows and sliders that Thermal Industries make. Let’s discuss the warranty. Bought windows for the complete home and 3 sliding doors. Bought: 2009. Come to find out that all three sliders – on their secondary lever locking mechanism on the moving door frame is out of locking adjustment – the bolt was not engaging so the lock is useless. Their office in Wood Dale, IL is out of business so dealt with the home office in PA. After phone calls that are useless as well, I sent a letter. Returned the call to me…Dec. 29, 2016. They do not or will not send someone out to adjust or replace the 3 locking bolt mechanisms. Even though it’s cover by the warranty. She said that they would send 3 new bolts for free but there is a $50 handling fee, and UPS charge of $75! So for $150 you get new bolts that you have to do yourself or get a handy man.
    I just finished adjusting them myself, all working properly within 20 minutes. I see a defect in their design as the locking nut doesn’t lock firmly so the bolt can thread it’s way loose over time. And the two screws that hold the whole unit in the frame are way too short or way too long and not engaging as they have been stripped out by the installation contractor. (Contractor is out of business as well).
    I would buy from other local companies as they all look the same. TI has a nice product but customer service and trying to work with them are pretty poor. I would stay away from this company if your going to spend over $5 with them.

  7. looking to replace windows in my home. I read good and bad reviews of Thermal Industries, Inc. windows. What brand is in the upper crest of windows as far as quality and standing behind their warranties

  8. thewindowdog, Thanks for your great site and teaching us to be wiser consumers when dealing with contractors on replacement windows. There are MANY tricks they can play on the unwary!

    Can you recommend a replacement brand and model for the West Coast that also has an excellent warranty and no containing no clause for Tidal effects? Thanks in advance.


    1. Hi John, glad you’ve enjoyed the site. I don’t know too many companies to recommend on the west coast yet, but I’m hearing from new folks every day. What’s your zip code? Maybe I can point you in the right direction.

  9. Thanks for the informative site! I’m currently shopping for replacement windows and 2 places are selling Thermal Industries. I’m a little reluctant to buy due to their previous bankruptcy and concern about not being around years from now to support the warranty but I guess that is a concern with any business.

    The other thing I’m concerned about is I can’t find any reviews for the windows they’re selling. One is branded “5th Avenue” and the other is “Park Avenue”. Could these be the 3000/5000/7000/9000, just marketed under a different name?

    Thanks in advance for any info!

    1. Yes, they probably are just different names for the same products. Most manufactures will offer the same or very similar windows under several brand names. I can’t tell you which one corresponds to which model off the top of my head. If you ask them they should be able to tell you.

  10. I know you haven’t gotten to review Thermal yet, but is there any off the top head thoughts on the thermal windows series 7000? Decent or stay away?

  11. I am a 2nd generation replacement window contractor and we have installed Thermal Industries windows since 1978. In my opinion the 7000 series is the best bang for your buck. I sell it with the foam frame and sash upgrade and the Duralite spacer upgrade. Both of those upgrades only adds $36 to the window price. This window comes standard with their Peak Performance Eco glass package which is Cardinal 366 glass with a 97% argon filled space. You end up with a U-factor of .27 and a SHGC of .19 which is quite impressive in a window I can sell installed for an average price of $450-$500.
    I used to sell this window with the triple pane krypton filled upgrade a lot but not as much anymore. The reason is the cost gap got much wider as the performance gap narrowed. 15 years ago a double pane low E argon window had a U-value of .37 and the triple pane upgrade had a U-value of .20. The cost difference then was $80-$90 per window. Today the U-values are .27 and .18 respectively and the cost difference is $180 per window.

    On another topic Thermal Industries is now a private business again (Thank Goodness) and not owned by Atrium. Atrium sold them a couple years ago. They still honor all old warranties even dating back to before Atrium. The following might help some of the issues in the other comments:
    1. warranty from mid 1990’s through 2012 covered all vinyl and moving parts lifetime and glass seal for 30 years. (10 years 100% & 20 years prorated)
    2. 2012 to now warranty covers glass seal lifetime as well as glass breakage on the 7000 & 9000.
    3. Atrium windows from Lowe’s have nothing to do with T. I.
    4. Park Avenue is the 9000 series with a few frills and those dealers are given protected territories.
    5. @Doug I have also installed several of those Simontons over the years and I prefer the T. I. 7000 hands down over them.
    6. @Erick if you have opening windows you can find stickers on the edge of the sashes when you open window. This should have sash size as well as invoice number that Thermal can pull up in their system.

    1. Walter,

      Not sure where you got the warranty info, but my thermal industries slider was purchased in 1998 and the warranty was 10 years and that’s it. I am looking at the physical warranty that came with the window.

    2. Hi Walter,

      I know it’s been over year since you post comment. Based on your comments, you seem to be very knowledgeable on the Thermal windows. I am in the process of deciding between the Thermal Signature (9500 series) and the Soft-Lite Imperial LS. Both are comparable in price. The Thermal Signature has the E3 Krypton gas. What is your assessment between these two windows? One of my main concern with Thermal is the constant ownership changes and now that it is owned by a small private company, I don’t know how long that will last. Thanks for your time.

    3. Hello, can you give me new contact information to Thermal Industries as I have not been about to find them. Everything I find, says they no longer exist. I need some repairs and can’t find the hardware.

  12. Does anyone know anything about thermal industries wru 1000 dh all welded product? It’s through windows r us. A fast response is appreciated!

  13. I have a #41 thermal industries slider that as a broken seal on one of the sashes. I contacted Thermal and they said we have to have it fixed locally as they don’t make the window anymore. So, we took it to a local window repair place. They tell me the window is built in such a way that it’s nearly impossible to replace the glass. I looked at it and also see no way to take the frame apart. Any suggestions?

    1. Unfortunately, if the glass company can’t get it apart it probably won’t come apart. Do you have a copy of the warranty from Thermal?

      1. I do and the warranty was only for 10 years. 1998 + 10 years and we are out of luck. Well, I called thermal today and they said it can be done albeit not easily. We will end up breaking the glass to do this as I don’t want to replace entire window and cap it again.
        After seeing this, I would stay away from Thermal Industries windows. I know you reviewed them as pretty good, but……

  14. Thanks for this site. I am about to make the final decision between windows. Have a local installer here in Northern Virginia that I have been very impressed with…they originally recommended Vytex Potomac windows but due to an issue at that plant, the lead time to order and deliver windows is about 10 weeks. So they’re recommending Thermal Park Avenue Signature windows (we’re going with double pane.) Of course, I try to get 1 or two other quotes any time I do a project, and another installer was recommended and came by and recommended RJT Gold Earthwise. RJT is a local company here in Virginia.

    The Thermal Park Ave windows seem like nicer windows in the showroom. More solid and sturdy, and a nice tilt mechanism in the latch vs. tabs. Also seems like good U-Factor and CFM Air Performance numbers…BUT, after reading this site and a few others, I’m concerned about the longevity of the windows and Thermal’s ability/willingness to honor warranty. One post here talked about issues with the latch and company not honoring the warranty. Another site talked about their Thermal’s leaking a lot of air over time. No idea if all reviews are legit or not…trying to find objective professional opinions.

    Can you give any insight about Thermal Park Ave Signature vs. RJT Gold Earthwise? Which will last longer, and which company has there better warranty/customer service? Appreciate anyone’s professional insight here. Thanks.

    1. They’re both pretty small manufacturers with RJT being tiny. My company has been in Alexandria for a very long time covering the whole DC metro area. You can even get a quote online with no in-home salesperson. If you’d like a free quote check this section.

  15. We’re trying to decide between the TI Park Avenue 9500 series and Earthwise Group (Sprouse being the local manufacturer) Series 143 for 25+ DH windows in our house. The TI is about $11k and the EWG is $8k, so I assumed the EWG windows would be lesser quality but I’ve found more negative reviews about TI than EWG. Can anyone provide any thoughts between the two? The NFRC label seems to be similar and the air leakage rates are similar from what I’ve found.

  16. We have 12 year old windows with a lifetime warranty which thermal will not honor. Stay away. Currently looking for lawyer. Anyone interested in a class action suit?

  17. Kind of confused. I see Thermal Industries with a Thermal Window and doors Logo. I think they are two different companies aren’t they? Thermal Windows and Doors out of Murrysville Pa and Thermal Industries out of Pittsburg Pa?

  18. I called Thermal Industries, now Thermal Windows & Doors to replace my windows because the springs and locking mechanisms are failing in June of 2019. They seemed to be working with me on a solution to replace them. Now here I am on March 20, 2020 with no windows & them telling me that they were bought out & will not honor my warranty. I have at least 17 windows that I purchased from them. Needless to say, I would not recommend that you buy windows from them since they do not honor their warranty. I will not pursue legal help in trying to get this matter handled.

  19. Thermal Industries did go out of business, but there is no Atrium Windows in Pittsburg, PA. Now I am left with either trying to get parts from a window that I can’t find or get new windows. Any help?

    1. Hi Donna, you’re in a tricky spot. I’d be pretty confident that Atrium windows are available in Pittsburgh so they may be able to ship you warranty parts to a dealer in PA. I’d start by contacting Atrium to see if they can help. Let us know either way as I’m sure other people will be interested as more and more people have problems with their Thermal Industries windows.

Leave a Reply

Your email address will not be published. Required fields are marked *

best replacement windows of 2015