Okna 600 Windows Reviews

The Okna 600 Eco Pro series is the company's newest window option and one of their best. The Okna Eco Pro uses a more robust vinyl extrusion from the 500 Okna series. In additiona, the 600 also comes standard with a sill reinforcement and sill interlock that the 500 models does not include. Lookwise, it's pretty similar to the 500 model, but number wise closer to their top-of-the-line 800 series.

The Okna 600 Eco Pro comes with some similar features to the 500 model, including double weatherstripping, the foam inserts, the same low-e glass and a similar locking mechanism. Overall, a step above the 500 Series. One of the very best vinyl windows on the market.

Review By John M.-- Site Editor

Okna 600 Windows Prices

Consumers can expect the Okna 600 window to run $550 to $700 fully installed for a medium sized window and standard installation. A few factors to consider in project pricing include the upgrades such as the DX package, low-e window options, and installation requirements. Assume 30% of the total project cost is for the installation itself. The Okna 600 series is similar in cost to the Sunrise window and the Vytex Fortis series.

-- Window Itself: $325 to $450 --

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

-- Window & Installation: $550 to $700 --

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Okna 600 Windows Ratings

The standard Okna 600 awning will deliver a U-factor of .27, .02 AI and an SHGC of .29 and a visible transmittance of .49. Upgrading to the Deluxe package, which includes foam-filled insulation and an upgraded low-e glass, will lower the U-factor of .21, and a SHGC of .24. These are very solid performance numbers.

All of these numbers are from the nfrc.org website, which publishes performance data on thousands of window models and series from hundreds of manufacturers.

Okna 600 Windows Warranty

The Okna 600 warranty is identical to Okna 700 window, a limited lifetime warranty that covers the sash, mainframe, insulated glass unit, componenets and all hardware. Hardware is covered for 10 years on coastal homes that are subject to corrosive salt air .

The 600 Series warranty is fully transferable. The warranty does not cover the cost of labor to remove or reinstall any defective window. Some limitations and exclusions apply.

Okna 600 Windows Reviews

Do you have Okna 600 windows reviews to post? Help others make the right decisions by helping them learn from your experience.

Questions about the Okna 600 Eco Pro vinyl window? Jim and John are our site editors and they can answer any of your questions on this new construction or replacement window.

Okna 600 DX Windows Cost

Good afternoon, I have a quote from a very reputable company to install 19 OKNA 600DX windows (17 double-hung 36x60 and 2 ellipse windows) for $16,900. Is this a solid quote?

Scott - Homeowner - October, 2021

Website Editor's Answer

Scott, $900 a window is not cheap...but there are some factors here that lead me to believe this is a decent price (not necessarily a smoking deal, but fair). One, prices are pretty crazy lately. Two, the Okna 600DX is a fantastic vinyl window, one of the very best out there. And three, you received the bid from a reputable company, which is important if something should go wrong with the install.

I don't think it would hurt to get some additional bids if you want to get some comparison prices. One thing I like about multiple bids is you can go back to the Okna dealer and see if he will price match a lower bid. Might save you some money...

Editor Jim R. - October, 2021

Okna 600 vs. 500 Pricing

I finally got pricing on the Okna 600 vs. 500. The same dealer said $6900 for the Okna 500 vs $7300 for the Okna 600. So no big difference there.

The Majestics were basically the same price as the Okna 600. Looks like I’ll be going with the 600s. The quote is with half-screens...so you know how much extra full screens should be per window?

Thanks for your help.

Elias - Homeowner - May, 2021

Website Editor's Answer

Elias, the Okna 600 cost upgrade is totally worth it here. Both excellent windows, but the 600 is the better of the two. The extra full screen should cost $50 to $75 per window, somewhere in that range.

Editor Jim R. - May, 2021

Okna 600 Deluxe ECO Windows

Hi Jim, Aluminum Company of NC came out today.

It's an Okna 600 series window.

Replacing Anderson roll out in casement windows which i understand will take a little more labor and finishing inside

8 - 48 x 58 inch windows. 4 much smaller. 12 total.

I can't decide about grids. 1986 brick ranch. will be using a double hung vinyl which will be two large windows. just can't decide about grids. have thought about single prairie since not so busy.

I appreciate your thoughts and honesty

Are you a contractor or just someone who researches companies to help consumers?

I wait to hear from you.

Cindy - Homeowner - January, 2021

Website Editor's Answer

Cindy, I've worked in the window industry for over 20 years. Grids are primarily for aesthetic reasons. They do add a touch of energy efficiency to a window, but not much. $50 per window is about what I would expect to pay for the grids. I would add them if you like the look. The Okna 600 is a truly excellent window. Not the cheapest bid I've ever seen, but you are talking a great window and apparently very well regarded company. As long as you plan to be in the home long term, I think this is a solid investment. If not, I would continue to collect bids until I found one that was lower.

Editor Jim R. - January, 2021

Okna Eco-Pro 600 vs. Apex Insignia

Hi, I love your website and have found it very helpful! I'm in the Atlanta area looking to replace my windows. I've narrowed it down to the Apex Insignia or the Okta Eco-Pro 600 series (Pinnacle Window & Siding). Based on costs, it has come down to these two window companies. Renewal by Andersen and Infinity by Marvin were also out here but their prices are extremely high.

What is your professional opinion on Insignia vs. Eco-Pro 600? The Apex representative confirmed the Insignia is the Alside 8000 with upgraded features.

Also, what are the key metrics to use when comparing windows? I've learned that SHGC, U-Value, and R-Value are important. Is there something else I should be looking at? The Apex representative sent me some Insignia window specs. I have a few specs on Okna. But I'm afraid it's not the same metrics so it's hard to compare. For example, Okna lists just one U-value (0.26) and the Insignia specs have two that they list (Center of Glass and NFRC). Both of these are fractions. 0.15 (TG2) / 0.10 (TK2) and 0.23 (TG2) / 0.19 (TK2). I don't know what to make of it. Even SHGC has TG2 and TK2 so it's difficult for me to compare.

I would love your advice on this.


Cindy - Homeowner - November, 2020

Website Editor's Answer

Cindy, hi, thanks for the question. So the numbers are difficult to compare sometimes because there are so many measures that might include grids, a certain type of spacer, a certain type of glass. For instance, the center of glass is a way to make your U-value look lower.

The main number for me is air infiltration. The Insignia or Alside 8000 double hung has an air infiltration I believe in the .10 to .12 range. Not great, but not bad either.

The Okna 600 is going to be .02 to .03 in the double hung. Great.

The Okna 600 is going to beat the Alside 8000 in all energy efficiency categories. More importantly, the Okna is just a better built window so those numbers are going to widen over time. You have a much better chance that less issues arise with the Okna as well for this very reason.

If this were my project, I would choose the Okna 600, which is a VERY GOOD window. Better than the Renewal and the Marvin. (Although I really do like Marvin windows.)

Editor John M. - November, 2020

Okna 600 Price Quote

We have several quotes for 9 double hung and one picture. Townhouse is central NC.

Softlite Barrington for $5,405.00

Wincore 7700 for $6,200

Okna 600 for $8,250

Derek - Homeowner - May, 2020

Website Editor's Answer

Derek, I really like the Okna 600, but that's a lot to pay for that window. The Soft-Lite Barrington is not a bad window for an entry level window, but I'm not sure it's your best deal. Could you get pricing on the Soft-Lite Pr or the Soft-Lite Classic? These are both good windows and I'm wondering if you could get one or the other for the same price as the Wincore 7700. If so, this would be my pick.

If that Soft-Lite dealer has no other options, I think I would rate the Wincore 7700 as the best of the three in terms of long term value and pricing.

Editor Jim R. - May, 2019

Derek's Reply

Thank you sir, I have two more questions I was wondering if there is any data on the actual air infiltration rate number for the double hung 7700? Also any upgrades you think are worth exploring with the 7700? I have included a photo of window sticker if that help for AI rate.

Editor Jim R. - May, 2020

Website Editor's Answer

Derek, I believe the double hung delviers an air infiltration of .08. Confirm this with the dealer though who should have these numbers on lock. If I am off, please let me know!

Upgrades that are worth asking about include a sash reinforcement and/or a glass package upgrade.

Derek - Homeowner - May, 2020

Okna Eco-Pro 600 vs. Polaris 7400 Series

Hello John, I’m interested to know what you think of the new Polaris 7400 Series. (The sales person said it’s an upgrade of their ThermalWeld Series.)

I’m replacing three windows: Double Hung (30x45), Double Hung (36 x45), Slider (38x39). Three panes will have privacy glass and each window will have a full screen.

I received the following quotes:

1) Polaris 7800 (foam filled with supreme2 glass): $1,600

2) Okna Eco-Pro 600 (HeatSeal glass deluxe package): $2,150

In your opinion, are the Okna windows work the extra $550 or $183/window?

If I was to get a third quote from a Soft-Lite installer, what would be the most similar level/series to quote?

Matt - Homeowner - May, 2018

Website Editor's Answer

Matt, I haven't yet seen the Polaris 7000 series. I searched for information online, but wasn't able to find anything. If it's an upgrade on their ThermalWeld Series, that's great. I'd ask for some performance data, but I'm assuming it's in between the ThermalWeld and UltraWeld. If that's the case, I'd have say that this window would be as good if not a bit better than the Okna Eco-Pro 600 (although the deluxe package is quite nice). I would probably say the Polaris 7800 with the foam fill and upgraded glass package would be a great option. As long as the installation is solid, you can probably save yourself the $550.

Editor John M. - May, 2018

OKNA 600 Eco Pro vs. Renewal By Andersen

John, I received another quote and would like to get your opinion on it. A summary for 14 replacement windows in Central VA:

Renewal by Anderson: $20,000

Home Depot (Simonton 6500 Series): $10,400

Lowes (Reliabilt 3500 Series): $5,200

Skyline Windows (OKNA 600): $7,000

Okna seems to be the better window at a reasonable price. They also install windows with their own (W2)employees rather than subcontractors which I think is good.

I am looking for trouble free windows that hopefully will last 20+ years and am willing to pay more to achieve that. Not sure if any of these would accomplish that. Your thoughts would be appreciated.

Scott - Homeowner - February, 2018

Website Editor's Answer

Scott, this is a no brainer -- the Renewal! No, I'm totally kidding. $20K for 14 windows, that is a whole boat load of cash. Honestly, the Okna 600 is the clear winner; the 600 series is a way better window than the Simonton 6500 and the Reliabilt 3500, and probably just as well made as the Renewal. You should probably get a quote from the Okna dealer on their 500 or 800 series, both of which are slightly better windows -- certainly this is true of the 800 series. The 600 series is still a good vinyl window that should absolutely last 20 years with good installation.

Editor John M. - February, 2018

Okna 600 DX Windows

I have recieved a quote for the Okna 600 DX series. I have not been able to find reviews. 4 drop in replacement windows, 30" wide x 58" height $540 a window. If adding triple pane $596 a window. Have you any knowledge of the Okna 600 series? I live in north jersey. The 600 series is a blend of the 500 and 800 series.

Pete - Homeowner - February 20, 2017

Website Editor's Answer

Pete, the Okna 600 window is the newest window from this top tier vinyl window manufacturer. The 600 series or EcoPro has many of the same features of their top-of-the-line 800 series, except for the sill magnet, which I don't find to be a big deal. The 600 also uses a narrower frame, which allows for a bit more glass. It has a different handle at the bottom sash that many customers like more than the 800. It's an excellent window and at $540 a window, it's well priced. No reason not to jump on this bid, assuming that the installer has a good reputation.

Editor Jim R. - February 20, 2017

Pete's Response

Thank you John for your reply. Since then I also have received a quote for Softlite Imperial LS Windows. The price was $650 per window. Both installers are rated very well on Angie's list and Home Advisor. Is there that much of difference between the Windows? Is there talk that Okna is going out of buisness?

Pete - Homeowner - February 25, 2017

Website Editor's Answer

Pete, the Soft-Lite Imperial LS is an excellent window as well. Honestly though, it's not better than the Okna 600 Series. Okna is a very strong company in the window business and weathered the economic recession of 2011 to 2013 quite well. I would have no reservations about them in that regard.

Save yourself the $110 per window and go with the Okna. Congratulations on finding a great window at a great price. Many homeowners I deal with on the site aren't as lucky!

Editor Jim R. - February 25, 2017