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 addition, 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 - Updated In October, 2023

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Okna 600 Windows Prices

Consumers can expect the Okna 600 window to run $800 to $1100 fully installed for a medium sized window and standard installation. (Please note: this is ballpark pricing only. The only way to truly know the fair market price of your replacement window project is to collect local bids.) 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.

-- Installation: $100 to $300 per opening --

-- Fully Installed: $800 to $1100 -- *

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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 vs 800

Thanks again for all your help. I really like the Ideal Platinum 3000 windows and was going to have them installed since the price can't be beat for the quality. However, there is one issue that is making me hesitant to have them installed since the frame from the top sash is ticker/Wider from the bottom sash by about 1/2 inch on the left and right side. I understand all replacement windows reduce the amount of visible glass in each sash compared to construction windows.

Normally, I would not care about this but the issue is that the window does not look symmetrical when looking at the sides of the sash since the top is smaller than the bottom (I was told that the Ideal Platinum 3000 bottom sash actually is thinner on purpose since they manufacturer did not want to make the bottom bigger just to match the top frame/sash but not sure what to believe). I understand the Okna 600 Series has a narrow frame/sash which allows for more visible glass in the same 36"x64" double hungs.

Is the Okna 600 series or 800 series a better option than the Ideal Platinum 3000 if I want to have the largest visible glass? Are there any other windows that you could recommend? Is the difference between the top and bottom sash on the Ideal windows actually providing more visible glass area than the Oakna window?

PS: I'm located in Rockville, Maryland.

Fernando - Homeowner - October, 2023

Website Editor's Answer

Fernando, I'm not sure if I've ever looked at the Okna 600 and an Ideal Platinum 3000 side by side -- I want to say that the two windows are pretty equal to one another in terms of how thick the frames are -- the one window that I like and uses a thinner frame is the Sunrise Restorations -- maybe check this one out from a local dealer...

Editor John M. - October, 2023

Okna Eco-Pro 600 Cost Quote

I have a quote for 9 windows for $9720.00 How much extra should the Woodgrain interior cost per window? Is this a fair quote for Okna 600?

I have a quote for:

$595 per window

$195 ea. woodgrain

$48 ea grids

$135 ea window install inc ext trim

Thank you so much, I'm in Akron Ohio

Charlene - Homeowner - December, 2022

Website Editor's Answer

Charlene, all of those prices look really good — that wood grain interior cost per window is steep but fair and it’s like getting a wood clad window that will last you 40 to 50 years — so it’s worth the price in spades. That install cost is REALLY good — I’ve been seeing about 2x this price from most consumers…

Editor John - December, 2022

OKNA Eco Pro 600 Deluxe vs. Sunrise windows

Hi John, my name is Catherine, and I live in Cary, NC. My husband and I are torn between two companies, offering OKNA Eco Pro 600 Deluxe and Sunrise windows, respectively. See details below, and please let me know if it would be helpful to see the attachments provided by Kelly Windows.

I like the less bulky look and more light, as well as the cheaper offset noise reduction glass option from Sunrise at Kelly Windows. However, as you will notice, the base cost for the same project (setting noise reduction aside) is roughly $6k more expensive if we go with the Kelly Windows quote. Both companies offer lifetime, transferable warranties.

Noise reduction is important to us, but so is cost. We were hoping to schedule sooner rather than later, given what we have planned in the fall, but can be flexible.

Is it worth the cost for noise reduction?

What is your opinion about using laminate vs offset?

Do you feel both companies are offering fair quotes?

Or do you think we could go back to Kelly Windows and see if they would price match their competitor for the base cost? We have been in touch with these companies since Feb/Mar, so I don't want to ruffle feathers, but this is also a huge investment...

OKNA Eco Pro 600 Deluxe

Total project cost, including tax, w/o laminate: $32,807.78

Total project cost with noise reduction laminate ($8,160 upcharge): $41,559.38

"Quoted price for the 34 windows was $31,950. Windows Prices

We can include the pictures at no additional charge.

Without grids is $40 per window and save $1360

Laminated glass for noise reduction would add $240 per window add $8160

The other changes are minor and we will include at no additional charge.

Grand total $41,559.38


Total project cost, including tax, with offset noise reduction glass (~$2k upcharge): $40,235.91

Booking 6-8 weeks out

The total list price with all options, including, the Noise Reduction Glass for all the windows is $35,892. With our 30% discount ($10,768), your price is now reduced to $25,124.

Our labor/installation cost to is $365 per existing window opening [ 35 ] = $12,775. However, we will extend to you an additional 3% discount ($383) for a reduced labor price of $12,392.

The total project price covering labor, material and installation with a lifetime transferable warranty on both material and labor, is $37,516 + tax.

If you choose to move forward, the initial deposit is $8,000 (20%), with balance on completion."

Jim - Homeowner - July, 2022

Website Editor's Answer

Jim, prices are crazy these days. My advise is to either wait a year (recession coming up????) or collect a bunch of bids until you find a solid installer who gives you a fair price.

The Pella 250 is really not that great a window in my opinion. The Sunrise is a fantastic window so that would be my pick hands down. But consider getting some bids just to see if anything else might be a better value.

Here is my list of good and great windows in case you want to continue your search:

Editor Jim R. - July, 2022

Okna 600 Price List

All of the bids below come from contractors with very good reviews and reputations. I have 31 windows, most of them double hungs and one 45 degree bay window. Thanks in advance for any help you can provide me with.

Provia Endure Price: $24,585

Okna 600 Price: $27,285

Sunrise Restoration Price: $40,660

Soft-Lite Imperial Elite: $30,395

Annie - Homeowner - May, 2022

Website Editor's Answer

Annie, if all of these contractors have great reviews, I would probably opt for the Okna 600 bid. Either that or the ProVia Endure. Both excellent windows, although I would say that the Okna 600 is the better window. Probably worth the extra $3K in price.

Editor Jim R. - June, 2022

Okna 600 vs. ProVia Endure

Hi Jim, first of all I want to thank you for your excellent site - been on there a lot and learning some good info. I'm stuck with a comparison - I'm replacing 8 windows and a sliding glass door, and I have narrowed my choices down to the following:

ProVia Endure - $15K

Soft-Lite Pro - $12K

Okna 600 - $17K

All installers have good reviews and 20+ years in business. For installation warranties, the SL installer offers a 6-months, the Okna installer offers lifetime, and the ProVia installer offers 10 years. The only other difference is that the SL & Okna prices are cash with the ProVia having available financing (12 mos, 0/0/0). I'm in Southern PA, so we don't get super-extreme weather, but the mercury will hit 100 and -10 on occasion, with slightly above-average rainfall.

Any thoughts on my options?

Matt - Homeowner - May, 2022

Website Editor's Answer

Matt, all good options to be honest and the price differences look to be about what I would expect. The Okna 600 is the best window, followed by the ProVia Endure, and then the Soft-Lite Pro. So, it's a tricky answer to give. If this were my forever home, I would probably do the Okna option. If I was unsure whether I was going to be in the home in 12 years, I would go with the Soft-Lite Pro.

Editor Jim R. - May, 2022

Okna 600 vs ProVia Aspect

Dane, we have quotes from 5 installers for replacement windows in the Atlanta suburbs. 29 windows, mostly double hung, some picture

Prices reflect cash/check discount

1) Pro-Via Aspect $668 average per window
lifetime window and lifetime labor warranty

2) Great Lakes Comfort Smart $677 average per window
10 year warranty

3) Okna 600 $683 average per window
(the glass package on this quote does not qualify as Energy Star in the Atlanta area due to SHGC 0.29 where it needs to be <=0.25)
lifetime window and 10 year labor warranty

4) Soft-Lite Barrington $693 average per window
Soft-Lite Pro $797 average per window
lifetime window and lifetime labor warranty

5) Zen Nirvana (Soft-Lite Classic) $800 average per window
this is a different installer than the one who quoted the Soft-Lite Barrington and Pro
lifetime window and lifetime labor warranty

Additional quotes that we are not considering include Pella Lifestyle aluminum clad, Precision Millworks, and Interstate Composite as all were too expensive for us.

All the installers were researched and have excellent reputations.

Any recommendations?

Mitchell - Homeowner - January, 2022

Website Editor's Answer

Mitchell, the Okna 600 bid is BY FAR the best bid you have there. The 600 series is a fabulous window and so much better than anything else on your list. As long as the Okna rep has a good reputation, which it sounds like they do, this is where I would unequivocally go with.

Editor Jim R. - January, 2022

Mitchell's Reply

Thank you for the assessment. Just to close the loop with you, we wanted to let you know we were able to negotiate the Okna 600 price down a bit so it came in around $660 per window, and this is the bid we are going with.

While we liked the Zen Nirvana as well, we would have likely gone with the Pro-Via Aspect as our second choice due to price.

Thanks again!

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 Ideal Majestic series 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

600 Eco Pro Series for $8,250

Derek - Homeowner - May, 2020

Website Editor's Answer

Derek, I really like the 600 Eco Pro, 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) 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 (600 Eco Pro): $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. If you are in New Jersey, you might want to take a look at the Ideal Platinum 3000 series. 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