Polaris ThermalWeld Windows Reviews

The Polaris ThermalWeld window is their mid range vinyl window that is considered a very nice mid range option, although not in the same league as the Polaris UltraWeld. Consumers can expect better numbers out of the ThermalWeld, including a .29 U-value and .28 SHGC. The ThermalWeld has a bit beefier frame than some windows, but most homeowners won't notice it once installed. The ThermalWeld carries an upgraded warranty compared to the ValuSmart window.

The Polaris ThermalWeld includes a true position balancing system, sash limit locks, reinforced meeting rails, a true sloped sill, cam style locks, extruded pull rails and the energySMART glass. The ThermalWeld is a solid mid range vinyl window that I would recommend if the price point is right.

Review By Jim R. - Site Editor

Have a question about your upcoming project? Shoot our editor John an email and get the answers you are looking for.

Polaris ThermalWeld Prices

The ThermalWeld should run $450 to $600 fully installed. Where your price bid falls on this spectrum will be based on the size of your windows, the upgrades you select, and the type of installation your project requires. Compare to Milgard Tuscany prices and Harvey Classic window costs.

-- Window Itself: $250 to $350 --

-- Installation: $75 to $250 per opening --

-- Window & Installation: $450 to $600 --

» More On Polaris ThermalWeld Cost





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Polaris ThermalWeld Ratings

Consumers can expect slightly better numbers out of the ThermalWeld compared with the ValuSmart model, including a .29 U-value, .28 SHGC and .46 VT. Upgrades to a premium glass and krypton fills can bring the U-factor as low as .22.

All in all, some decent performance out of a mid range vinyl window. These numbers come from the nfrc.org website, which lists hundreds of window models and series, along with their U-factor, SHGC and VT numbers.

Polaris ThermalWeld Warranty

The Polaris ThermalWeld offers a lifetime warranty that applies to the mainframe and sash. The insulated glass unit carries a 30 year warranty period. The warranty doesn't cover either screen damage or accidental glass breakage. Any exterior paint carries a 20 year warranty on fading and peeling.

The warranty should be transferrable to a subsequent owner and then the warranty is good for 30 years from when the windows were purchased. As with all warranties, you should read them in their entirety prior to your purchase.

Polaris ThermalWeld Reviews

Submit your Polaris ThermalWeld windows reviews and help consumers to make the best decision they can on whether this is the right vinyl replacement window for their home.

Do you need answers about the Polaris ThermalWeld window? Our website editors, Jim and John, can answer many of your questions regarding this premium vinyl window. Please include an email for us to get in touch with you - we never use your email for any other purpose than to answer your question.

Polaris Thermaweld Plus vs. WN Georgetown

Hey Jim! I received two quotes for 15 double hung grid windows. One from WN for the Georgetown is $11000 (after a somewhat comical 58% discount) and the other is for the Polaris Thermaweld Plus for $9800 from a local company. Some of the windows are a bit bigger at 32x65. What are your thoughts between the two or should I try to get the Polaris ultra weld or the vytex potamac and pay the extra or would you recommend keep shopping around? Thanks so much for the advice!

Marc - Homeowner - May, 2022

Website Editor's Answer

Hey there Marc. I happen to really like the Polaris Thermaweld Plus. I think its easily the window that the Georgetown is -- I'd go with the Polaris window. Yes, you could always upgrade to the UltraWeld, but I don't think it's necessary. Maybe ask about an upgraded glass package -- that would probably get you close to the UltraWeld.

Editor Jim R. - May, 2022

Polaris Thermalweld Plus Reviews

Hi, In the process of replacing my 31 year old windows (Soft Lite) that came with the house. I'm also having the house vinyl sided. First time I have ever done either.

I have spoken with 3 companies so far and here is what I've gotten to replace 14 Double Hung windows and 2 50"x50" picture windows. Al quotes are base models and add ons vary.

Window World 4000 $11,500

Okna 600 $9966 Adding triple pain is $95 a window. Going to the 800 was an extra $50 a window.

Polaris Thermal Weld Plus $7844 Same folks that would do the vinyl siding. Adding triple pane is $80 per window

Questions for the forum,

The top of my house only has one HVAC vent so it gets cold in the winter and warm in the summer Is it worth while to go triple pane on the second floor? It's 4 windows. I 'd also like to gain some sound proofing from my neighbors driveway that is right by the bedroom window.

Is there a big added value in having the siding guy do the windows? For the record I have felt more comfortable with them doing the windows then anyone I have met so far.

Is The Okna window that much better then the Polaris?

I have enjoyed reading posts on your website.Thank you very much!

Rick - Homeowner - June, 2020

Website Editor's Answer

Rick, the Polaris Thermal Weld Plus is a good window. The Okna 600 is a great window. How much greater? Probably by about the price you are looking at. I wish I could press my thumb on the scale one way or the other, but those price difference is just about what I'd expect.

I think it makes sense to add the triple pane to the 4 top of the house windows.

If the siding guy knows windows, then yes. I just always have an issue with someone who says they know how to do something, but they don't spend much time actually doing it. There is something to be said about people who just install windows. However, I really don't know his expertise, so I can't give you a firm answer here.

Polaris makes a nice window. Assuming good installation, I think you could definitely go this route. The Okna 600 is a great window and if you can afford to go this route, this would be my option if I was staying in this house long term.

Editor Jim R. - December, 2020

Polaris ThermalWeld Window Costs

Replaced 17 windows with Polaris ThermalWeld. who holds the warranty me or contractor? All double hungs, paid $750 per window because we needed grid wood color inside, white on outside. MY HOME IS MUCH MORE QUIET.

Dianne - Homeowner - October 18, 2016

Website Editor's Answer

Dianne, you as the homeowner should have the limited lifetime warranty with you when the job was completed. Call up whomever did the install and make sure you get the warranty from the company. I'm glad to hear that you like the windows and that your home is quieter -- Polaris makes a good vinyl window.

Editor Jim R. - October 21, 2016