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Thermal Industries Windows Reviews

Read 8 Thermal Industries windows reviews from homeowners and contractors who have worked with or owned their products in the past. Find additional pricing with our window replacement estimator.

Have a question on window quotes, prices, or reviews? Send our site editor Dane your questions, and get personalized answers that can save you thousands of dollars on your project!


Thermal Industry Window Bid

Dane, we are replacing windows on our home built in 2000. We have 23 larger than standard windows. We will have oak interior. The Thermal window has triple pane with low e and argon has. The Okana is double pane also with low e and argon. Thermal windows with pocket replacement is $18562 with Okana at $18380. This is a major investment and would appreciate your advice. We live near Cleveland Ohio. Also, what are your thoughts on pocket replacement versus full frame replacement?

Jane - Homeowner - from 2019

[Site Editor's Answer]

Jane, Thermal Industries makes a solid vinyl window. Okna makes a great vinyl window. I would rather have the Okna double pane over the Thermal Industries triple pane. Now, you didn't say what series or model you had the bids on and this makes a big difference. I'm going to assume that we are talking about the mid range Okna (500 Series) -- their lower end series (the 400 or 600 EcoPro) might change this opinion for me. But if its their 500, 700 or 800 series, then the Okna is the clear winner in this head-to-head match up.

Tim - Site Editor - from 2019

[Jane's reply]



Hi Dane, Thanks for the quick reply. The Okna product is Envirostar 800 series deluxe. The Thermal window is 9000 series. Why do you believe the Okna is a better window? I thought triple pane was better than double pane. Also is full frame better than pocket installation. I have a tight budget and the full frame will add $5-10k. Is this worth it? Thanks, Jane

Jane - Homeowner - from 2019

[Site Editor's Answer]

Jane, the Okna 800 DX is one of the best vinyl windows on the market. It's the better window in terms of construction, fit, finish, tolerance, features, and hardware. All of this is born out in the performance data. Full frame and pocket installation is a tricky question — if I was worried about the quality of my frames and sills (wood damage, wood rot) I'd certainly consider full frame replacement. Otherwise you can get away with pocket installation. Pocket will cost you some glass area, but save you quite a bit of money. I'd also consider how long I was staying in the house when I considered these two options.

Tim - Site Editor - from 2019


Thermal Industries Windows Prices

Hi - my builder - who I completely trust and over all the years working with contractors on many houses I've owned he is one of the most thorough and detailed I've found. He takes care of all my siding and wood replacement and installed new roof and has built new porch and deck and many things. When any wood rots on the house he replaces with non rot pvc. (Like the Masonite siding to hardie plank)

The house was built in 1991 and I have replaced nearly everything on the house now. The last big thing I have now is all the windows. Due to money I will have do the windows in stages doing 6 or 7 at a time. The existing windows are double hung wood windows with 1 inch old style pull out grills and exterior wood trim. Scott said the best route is to replace all exterior trim to pvc and use ply gym vinyl sash replacement kits. (They can do 1 inch contoured grills) that way I won't get any glass loss compared to using pocket replacement windows. Cost per window for all that is around $600.

I don't like the idea of pocket replacement windows and have had many estimates from contractors for those. My favorite of those is a guy who will replace all exterior trim to pvc and use thermal industries 5000 series 1 inch grills. Cost is around $450 per window all in.

The best window guy I've found though is a window cobtractor who refuses to do pocket replacements...he will only price for full frame and believes that pocket replacements are bad news. He replaces all exterior wood trim to pvc and also does all new interior wood trim. This looks like a great thorough job but it will be more mess on the inside of the house than using my builders method. He proposes to use okna 500 series windows and for all exterior and interior trim with window it's $660 per window. Many thanks .

Rowland - Homeowner - from 2016

[Site Editor's Answer]

Rowland, sash replacements can be a mess, unless the installer really knows what they are doing and has some experience putting in sash replacement. If it were me, I would go with the full frame and the best window in the bunch -- the Okna 500. At $660 per window, that's a pretty great price for all that that entails.

I did take a look at the performance numbers of the Thermal Industries and I was impressed with those, but again I think it's worth the extra money to go with the more thorough approach, especially considering it sounds like you will be living here for a long long time. Although I have to say that $450 per window is a pretty good price :)

Ply Gem makes a pretty good window -- they make a number of models so I'm not sure which is offered in the bid. I think I'd put the Ply Gem below the other two options you have though.

Dane - Site Editor - from 2016


Thermal Industries Vinyl Windows

Feldco actually relabels the Thermal Industries window that uses a pocket sill design, which is a less desirable design feature than the true sloped sill that does not let the water drain through the window frame itself. The Thermal Industries window is not a bad window at all, but its nowhere near the top rated replacement window options out there. The bottom line may be to get several bids from Feldco and then a few others to compare and contrast how the cost and quality compare.

Holland - Contractor - from 2012


Thermal Industries Windows Reviews

I'm considering either Thermal Industries or Okna windows. Is one of them better than the other, or should I be looking at something else? I'm either renting or selling the home soon, so I don't want to spend too much, but I don't want to have to replace them in just a few years if I do keep it as a rental.

Tina - Homeowner - from 2010

[Contractor Response]

Okna makes a very good product. They are well designed and engineered and have great customer service. Sometimes they can be priced a little high, and the Thermal Industries is probably going to be a lot cheaper. They aren't exciting but it's a solid window for a good price.

Ned - Contractor - from 2010

[2nd Response 2]

Okna has a good reputation, but I'm not a fan of the TI Excalibur. Thermal Industries is a mid to low grade window, too. I would look into Sunrise, HiMark, and Softlite for better performance at a decent price.

Holland - Contractor - from 2010

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TI vs Vytex

I've been looking at replacement windows and thus far I have the following quotes for 15 windows - they range in price from 9K to $14K.

Thermal Industries Park Avenue Series with triple pane for $14,000.
Revere Berkshire Series with triple pane for $9,000.
Vytex Fortis Series for $10,000.
Vytex Potomac-HP Series for $9,000.

John - Consumer - from 2010

[Installer Response]

Of the four you mentioned, my pick would be the Vytex Fortis, a nice unit and towards the lower end of the price spectrum you have so far. You may want to get some more bids though as the "contenders" leave something to be desired - Try to get a bid anyone selling Okna and or Soft-Lite, if available.

Steve - Installer - from 2010




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