Marvin Infinity Reviews

marvin windows

As we get started on our Marvin Infinity reviews it’s important to keep in mind that this is a fiberglass replacement window.  It’s a bit of a different animal than either vinyl replacement windows or wood windows.  Fiberglass windows are designed to replicate the look of a wood window with increased durability.

While we’ll be writing another post soon on the advantages and disadvantages of different types of window construction it’s important to note that many wood replacement windows offer warranties as good or better than what you’ll get with a fiberglass product.  With fiberglass replacement windows you’re paying a premium over the cost of a vinyl window to get the look of wood.  It would be worthwhile to compare the cost difference between fiberglass and real wood.   The price difference is often very small.

Back to the Marvin Infinity review.  First of all this a great looking window.  It looks very solid, comes in a wide range of colors and offers a substantial amount of style options.

 

marvin infinity window
Here is a very nice looking Marvin Infinity replacement window

As you can see in the above picture the Marvin Infinity window does a great job of looking like a traditional wood window.

Marvin Infinity windows are often ordered with simulated divided lites or SDL grids.  This means the grids are on the outside of the glass which is consistent with the look of a wood window.

Marvin infinity windows cost
SDL grids on a Marvin Infinity window.

You can see the joint between the grid and the sash frame is pretty tight and very clean looking.  If you get up this close to it, you can tell that it is a separate piece, but nobody is going to go around you house inspecting things like this.  If they are you probably don’t want to invite them over anyway!

Notice the hardware in the picture below.  There are MANY options and they have a very nice classic look.

marvin infinity window hardware
Marvin Infinity window hardware provides a classic look.

One last design element to point out is the lack of typical tilt-latches.  As you can see in this picture, the Marvin Infinity window skips the typical told latches for a very clean and elegant look.

Marvin Infinity window cost and price and pricing
Marvin Infinity windows without the typical tilt latch on the sash.

 

How about efficiency?

The NFRC ratings for the Marvin Infinity window are pretty solid, but not particularly spectacular.  This makes sense as the product was clearly designed to be pretty rather than the most efficient window on the block.

marvin infinity windows u-factor ratings
martin infinity u-factor and nfrc ratings

You can see in this NFRC sticker showing the Marvin Infinity U-Factor that the ratings for this window are solid, but not remarkable.  You’re paying a premium to get this fiberglass window vs a vinyl window, but you’re not getting any real improvement in efficiency.

There are MANY options that affect the ratings so this certainly isn’t the only option, but the Marvin Infinity window will only ever be average in terms of efficiency ratings.  It will never be a top performer no matter how you order it.

In addition you do get a pretty high air infiltration rating with this window.  That means it does not provide a particularly great seal in windy conditions.  This is more of a concern for some folks than others, but if you’re in a relatively high wind area or if you’re particularly concerned about a tight seal, the Marvin Infinity window might not be for you.

Marvin Infinity Warranty?

Unfortunately the Marvin Infinity warranty leaves much to be desired.  They say it has a “lifetime” warranty, but it sure does have a lot of limitations and exclusions.

Breakdown of the Marvin Infinity warranty:

  • Insulated glass seal – 20 years NOT lifetime
  • Accidental glass breakage – NOT COVERED
  • Ultrex fiberglass – Lifetime until transferred, then 10 years
  • Ultrex fiberglass finish – 10 years NOT lifetime
  • Non-glass components (screens, hardware etc)- 10 years NOT lifetime

See the Marvin Infinity warranty on Marvin’s website or download the Marvin Infinity warranty here.

As you can see the Marvin Infinity warranty isn’t nearly as thorough as you might expect for a window sold at this price point.

 How about the Marvin Infinity window cost?

The cost for Marvin Infinity windows can vary dramatically.  There are MANY options that have a huge impact on the price so it’s difficult to even give a range.  For example a basic double hung window without installation might start at about $500 and a fancy window with several expensive options could easily top $1000.

If you’ve decided to go with the Marvin Infinity windows the easiest way to get a great price is to shop around.  Find out who are the Marvin Infinity dealers in your area and get quotes for the same products.  There will likely not be too many local dealers as Marvin limits the distribution to avoid price shopping, but you can always call someone out of town too.  A reputable company should be able to send you a quote and a little shopping can go a long way to lowering the price.

To sum up this Marvin Infinity windows review I’d say it’s important to remember that these windows are pretty, but they command a premium price and they offer a very limited warranty.

You’re paying more for this product than you would be for a vinyl window.  That doesn’t mean this product is any better, but it sure does look nice.

You may be better off with a wood window with a longer warranty than this fiberglass product.  You’re paying the premium for the looks rather than for the efficiency and the look is still that of a simulated wood window.  A real wood window would look even better and based on the warranty it should last longer as well.

Take a look through several more reviews on wood, fiberglass, composite and vinyl replacement windows here.

If you’re looking for a window company right now, the best advice we have is to join Angie’s List.  For just a couple bucks you can get a 1-month membership and it’ll be worth much more than a caramel macchiato in the long run.  You can find the best pricing for Angie’s List on the internet right here

If you’re already a member of Angie’s List or if you’re just not going to join (despite my ringing endorsement), you can find our suggestions for the best companies in your area right here.

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.  

66 thoughts on “Marvin Infinity Reviews”

  1. Installed twin Marvin Infinity double hung approx 6 weeks ago (April, 2014). Live in Wisconsin on Lake Michigan, 4th story condo facing the lake, with no buildings or trees to block wind. I have hated them right out of the gate due to enormous air infiltration. I have been awakened by wind howling/whistling through (anywhere from 8-25mph). Also, the tops of both windows slide down a small amount every time window is opened, so air and lake flies come in through that breach. That room used to be comfortable, now is the coldest room. Since installation, spring daytime temps are between 40-80 degrees. Many nights get into the 30s. I can’t imagine how bad the windows will be in the winter. I am replacing the Marvin with Soft-Lite Elements triple panes. I have more windows but will not proceed until I have found a good window for low air infiltration in a windy environment. Also irritating is the lack of urgency on the part of the installer, a large reputable construction company with great reviews. I wait weeks for parts to come in, not something I would want to deal with in sub freezing temps and higher winds.

    1. Have you found a window that has a good air infiltration rate? We are in the process of building a sunroom with 8 DH windows. Your review was very helpful.

      1. There are lots of windows with great air infiltration rates. Typically you’ll find the best ratings with high end vinyl windows. Of course wood and fiberglass salespeople don’t like this fact, but it’s the truth. The real trick is understanding what you want to consider to be “good”. Everything in life is a trade off and this is no different. AAMA states that anything under 0.30 is in their top tier, but may folks would tell you (me included) that’s not very good. I would say anything under 0.10 is a pretty tight window, but you may not find ratings like that with wood or fiberglass options. I assume you’re looking for fiberglass as you posted in the Marvin Infinity section.

        Unfortunately it’s difficult to tell how the end result will perform without feeling the windows in a house. The windows that came with my house have a rating of 0.30 and I can tell you that I feel the cold when I’m sitting on the couch in the winter. If you’re in love with the look and feel of wood or fiberglass you’re going to need to make a compromise on the efficiency. It really just depends on what’s more important to you. You might want to checkout some woodgrain laminate options on vinyl windows. Some people like the look and some don’t so your mileage may vary.

        1. Thanks for the reply. Can you give me the names of some windows that have a .1 or below air infiltration rate? The only one I have found is the Sunrise Vanguard window.

          The others show the other criteria, but skip the most important one, probably because they are .3 or above.

          1. Many vinyl windows achieve that rating these days. You’ll find options from Soft-Lite, Alside, Okna, Revere and more. Most newer designs will get to 0.1 or below. Most older designs do not.

      2. The Soft Lite Elements replacement of the Marvin Infinity double hung, triple pane was nixed. Things went south during the contract signing and I was alarmed at lack of customer service pre-windows. I have just signed a contract for Okna Insul-Tec (505 Series) single hung, double pane Deluxe windows. The Deluxe version has foam insulation in the frame channels. They also make a double hung version with very good air infiltration numbers. Okna 500 and 505 numbers are comparable to the Soft-Lites. Because of my experience with the two Soft Lite contractors in the area, I looked around for other brands.
        Depending on your situation, if you don’t absolutely need a double hung, you may want to consider a single hung. The double hung added operational and air infiltration problems over the single hung.
        Also, varying window reps concur that with large windows (mine are 36x72h) triple panes will add approx 10-12 lbs and cause maintenance issues and early wear out. I opted to go with double pane.
        The Okna Insul-Tec Single Hung (505 Series) numbers are:
        U Factor: .26, Solar Heat Gain: .30, Visible Transmittance: .54, Condensation Resistance: 62, Air Infiltration (CFM): .01

        The Okna Double Hungs (500 Series) are almost identical, the CFM is .02. Again, this is for the Deluxe version.

        The Soft-Lite Elements and Imperial LS numbers are very similar to the Okna 500 and 505s. Soft-Lite does not make a single hung. The Imperial LS is almost the same as the Elements, just without an upgraded lock and a bit less expensive. I was looking for the good air infiltration number and of the ones I could find, Soft-Lite and Okna models mentioned above were by far the best. Depending on availability and dealer reputation in your area (Angies List ratings really helped) both seem to be good products with good contractor reviews.

        I had difficulty finding an Okna dealer in my area (there was one) and had to call their HQ to find it.

        I also found that that I prefer the vinyl over the fiberglass. The Marvin Infinity is fiberglass and it conducts the cold even though many dealers deny this. As the outside temps dropped to the 20s and 30s, the frame got colder and colder to the touch. Very cold. This added to the cold radiating inward. I was also afraid with the icy fiberglass frame and the air infiltration, there would be condensation and ice forming inside during the winter.

        My new windows come in 5 weeks. I am hopeful this resolves my issues.

        1. That’s a great example of not falling in love with one brand. Many of these smaller manufacturers like Soft-Lite and Okna have very limited distribution. So, if you don’t like the local company you may not have any other option. Of course you can always find another brand of window, there are TONS of them. Hopefully things work out great for you! Okna as a company always makes me a little nervous, but the windows seem to be of fine quality. Good luck!!

    2. You have an installation problem. That is why they are allowing air infiltration. I have seen this before. I have sold/installed 100’s of Infinity windows. They need to be shimmed a little better. As far as vinyl rating being better.. they are out of the box however just wait a couple of seasons after they expand and contract the rating will never hold..

      1. This is one of the strongly emphasized selling points of the Marvin-Infinity windows, the limited contraction of fiberglass vs. vinyl. I understand your point Window Guy, and I believe it.
        I have had 1 slider, and 6 casement windows installed in my home. The windows on the upper level, some 25 feet high, have had problems with lady bugs and wasps getting in the seal between the window and the frame, since they were installed. The bugs do not get in the house, unless you OPEN the window without the screens on. We have also had problems with condensation in the fall/winter when we turn the furnace on, and I understand some of this is normal depending on humidity in the home, but we also get a frozen frost glaze in below zero weather if the windows are not continually wiped dry. I am in the process of quoted another casement, and a big picture window, with half circle on top and two casements. Infinity’s quote was quite ridiculous, so I’m slowly moving away from them. I’ll take my time now and get several quotes.

    3. I am intimately familiar with the Marvin Infinity window. I have installed thousands of them in a climate where winds can exceed 80 mph and temperatures below zero. I have never heard ONE homeowner describe wind whistling or air leakage problems like you are describing. Like any quality manufacturer, Marvin has specific installation methods for their products. You cannot install a high performance fiberglass framed window like you would a common vinyl window. My guess is poor installation which accounts for MOST window problems. Marvin windows have excellent Design Pressure ratings which measure air and water infiltration. Most companies don’t even publish DP ratings. In addition, many of the vinyl companies may have good DP ratings the day the window is made, but after several seasons of heat and cold cycles (especially on south and southwest elevations), vinyl windows can expand, contract and warp. This can destroy their ability to keep air cold infiltration out or heat in. Marvin fiberglass framed windows don’t have that issue. But you can have the best window in the world and it’s only as good as the installation.

      1. Hi Randy, I believe you’ve installed many windows and I’m familiar with the weather in Colorado Springs. My point is that the Marvin Infinity windows don’t have great air infiltration ratings. They just don’t. I’m not saying they’re bad products. I do think they’re very pretty. They just don’t provide a great seal.

        Do you have any evidence to back up your claim that many vinyl windows don’t hold up? It sounds to me like you’re ignoring the fact that Marvin Infinity windows have mediocre ratings at best and then you’re making up claims about products that you compete against. That seems like a questionable strategy.

        It’s also strange that you think companies don’t publish DP ratings for their windows. I’ve never heard of a window that didn’t have a DP rating. These are required to meet building codes so they must be available for all windows.

        We certainly agree that poor installations are the cause of most window problems. Beyond that I’m not sure where your comments are headed.

        1. What proof do you need to back up his claims about vinyl failing. It expands and contracts MORE than wood. It is extremely weak and in order to hold filtration ratings for longer than a few years they sacrifice having a thin profile. Some vinyl windows I’ve seen look like they’re fit for an ocean liner. Fiberglass is 8X stronger and expands and contracts at the same rate as the glass in your window. Would you rather have above average ratings for a lifetime or high ratings for a few years?

          1. What proof do you have that quality vinyl windows don’t last? Until you have any actual info you’re just posting propaganda. I would suggest trying to sell the Infinity windows on their good looks. By relying on propaganda it makes your case look pretty weak.

          2. Vinyl windows expand and contract twice as much as wood and seven times the rate of glass. What happens when there is such a huge difference in movement between the frame and glass? Seals fail.

            Fiberglass is glass. They expand and contract at the same rate, meaning the seals will never fail. This is not propaganda, it’s fact. Here’s another problem: when vinyl expands it actually bleeds off the petroleum and other chemicals it is made out of causing the frame of the window to literally shrink and bow over time.

            Ever notice how beefy vinyl windows are? Most have upwards of 10 chambers in their frame to try and defeat the massive amounts of expansion and contraction that occurs over its lifetime. I don’t care if the window has 20 chambers and 5 panes of glass, if the material is built to fail its going to fail. As UV rays beat down on that window and it builds heat it will eventually crack, warp, or deform. It only takes 120 degrees of absorbed heat to cause the window to deform, at 140 it becomes permanent, so good luck with a darker colored vinyl window in your home.

          3. Thanks for posting. It’s really helpful to see some of these sales pitches in a forum where we can discuss them. Someone probably told you all of this and I believe that you probably believe it’s true. Let’s take a look.

            Why do you think Marvin fiberglass windows have shorter warranties than most nice vinyl windows? A 10 year warranty on the fiberglass frames is really short.

            Do you think they would sell more windows if they had a longer warranty? Of course they would. Why then do they only offer a 10 year warranty? If the seal will never fail why is there a limit on the insulated glass warranty?

            They’re very pretty, but to say they’re better than vinyl windows is just spreading misinformation. Here’s the Marvin warranty. Here’s the Infinity warranty and here’s the Integrity warranty. You can see the Infinity warranty does go lifetime to the original purchaser if they live in the home and if they register the warranty within 60 days. If you rent the house or if you sell the house it goes back to the same 10 year warranty as the others. You pay all that money for windows and then you need to buy them again in 10 years?

            I really like Marvin windows. You can sell many of them and make a great living by being honest with your customers. Spreading propaganda is a bad life strategy.

            Thanks for posting and good luck out there!

      2. Randy / others: I installed 42 Marvin windows in my house when it was built in 1998 here in Nassau Bahamas, and I have no air infiltration whatsoever. My house is all concrete block construction, inside and outside. We’re in a hurricane zone. Hurricane Francis came by with 100 mph+ winds, and no problems.

        I also installed rather expensive aluminum hurricane shutters over the Marvin’s. Looking back, this was to protect the Marvin’s in a good storm. So far, so good!

    4. The worst Windows ever saches broke cheap can’t replace balaces Windows fall down have to take out and set on floor to clean cannot open Windows unless put piece of wood to hold up and I can’t get any service if one falls on my grandson big problem.

  2. What makes your nervous about Okna?

    I have seen the Envirostar and like it.

    Aren’t even some of the larger companies not in that great a financial shape?

    1. Many window companies are privately held so there’s no real way to tell what kind of shape they’re in. Okna has a history of misleading marketing. Their problems with Window Wizards really had nothing to do with Window Wizards. Okna made the misleading brochures and Okna produced the windows without the advertised options. Folks who aren’t familiar with that episode can find info here. They’re also not AAMA certified which seems strange. We know they say they’re certified by another group, but it seems odd that they would not be AAMA certified.

      The products do look nice, and they may be around for years. Remember the windows from Gorell, Schuco and Kensington all looked nice too. Now all of those customers are completely out of luck. The internet is still littered with glowing recommendations of these products and all of the companies have closed up shop and walked away from their warranties (although Kensington is now back).

      We don’t have any inside info about Okna, the history just makes us a little nervous. I wouldn’t recommend them to my family if that helps.

  3. What about the infinity casements??? I looked at their double seals on the frame and sash and looked pretty good to me for air and water penetration.

    1. All casements have better seals than similar double hungs or sliders. I don’t have the air infiltration numbers from Marvin on hand right not, but that would be the way to know. It’s important to remember you never need to guess, just take a look at the numbers. A rating of 0.3 is pretty high, anything around or under 0.1 is pretty solid in my book.

  4. I’m considering Marvin Infinity windows. How much does correct installation play into how much air infiltration there is? The installer (a company that’s been around for 80 years out of Ohio) assures me that I will not feel drafts like I do now with the vinyl’s I have in there.

    1. I’d avoid Marvin at all costs. My new house has issues with Marvin windows and they do not stand behind their product. The manufacturer will blame the retailer, who’ll blame the installer. In the end you will be left with a product that will provide you with years of aggravation and loss of energy efficiency.

  5. I ordered Sunrise Restorations windows. I’m very disappointed with the Marvin dealer who was going to do some warranty work on some of the wood Marvin’s I have in my home.

  6. Infinity warranty is lifetime for the original purchaser and you can get triple pane performance without the cost and weight in only dual pane glass. It gives you a .25 u-value which is very good. I install these windows all the time and you have to be very precise. They have to be perfectly square, level and shimmed properly. If they are installed correctly then they are one of the tightest windows out there and they don’t move around like vinyl. I just wanted to be truthful and correct some bad information on the review.

    1. Thanks for writing. We love having industry folk come by. As you’ll see we do post a link directly to the Marvin Infinity warranty as we’re trying to be as clear as possible.

      Regarding air infiltration, I believe that you believe that the windows seal well, but last we saw the air infiltration ratings were pretty high for Infinity windows. Has anything changed? If not then they’re not particularly tight no matter how well you install them.

      The warranty is also rather limited compared to nicer vinyl windows. We mention this in the post. I do think Marvin Infinity windows are a nice looking product. It’s the sales pitch that they’re “better” than vinyl windows that bugs us a little. They’re not better, but they are different. The only real reason to buy them is because they’re pretty.

      That’s a perfectly fine reason to buy something. Just remember that you’re paying the premium for the looks, not for anything else. Other than good looks they have moderate ratings and a warranty that isn’t as strong as some others.

      1. We are looking at Infinity for our new construction home and the dealer said on the Low E272 it had an AI reading of 0.09. We are going with all casements some with SDL and some without. What I am trying to decide is if we go with Low E 366 on the west side of the house, which happens to be the front for more sun protection We live in North Carolina. Thoughts?

      2. I have been in the home improvement business for over 25 years. Of that, 20 of them have been in the replacement window industry. Professionally, I typically visit 350+ residential homes each year, of which 20%, if not more, are families who have been blinded by the often low price of vinyl replacements, only to have them fail.

        Although I cannot speak first hand for other parts of the country, here in New England, we experience on average a 100 degree temperature swing over the course of 1 year. I have witnessed first hand the profound effects of dramatic temperature changes over short periods of time which inevitably leads to vinyl distortion (warping/sagging), cracking, discoloration, corner separation and of course seal failure.

        Vinyl is simply a covering material and is perfectly fine for certain applications, such as siding or flooring. But when it comes to supporting the often heavy weight of glass, especially in larger, operable windows such as Double Hungs, it simply doesn’t hold up structuraly like other alternative materials like wood, fiberglass or other high-end composites.

        On average, vinyl windows cost between $75 to $150 to simply manufacture and can easily end up costing consumers anywhere from $300 to $1,500 installed, depending on options. It’s because of these often huge profit margins, that keep these companies ‘pushing’ these weak vinyl extrusions. And sadly, when they do fail, the average homeowner typically blames it on the out-of-business contractor who installed it.

        Simply put, when shopping for windows, buy the frame for the strength and the glass for the warmth……..

        1. Thanks for posting Brad. I’m not sure if too many companies are seeing huge profit margins, but we appreciate your perspective.

  7. Great website! Thanks for the time you put into this. I am building a new home in Greensboro, NC. The architect has specified Jeld Wen Siteline EX using both double hungs and casement types. The builder has suggested Marvin Infinity windows. I see your not a big fan of these windows in general, but can’t find a lot of information on Jeld-Wen. Here is my problem: the cost for the Jeld-Wen windows are double what the Marvin windows are for the same size/styles/features, etc. I know one is wood/metal and the other fiberglass, but the JW are coming in at $40,000 and the Marvins at $21,000. Any suggestions?

  8. Window Dog- Something you should be aware of with Marvin’s Infinity ratings compared to competitors. Window manufacturers are allowed to submit any size window they like for testing. Most companies submit the smallest size window they have (as they naturally have the tightest seals and least amount of AI). Marvin, who has won many awards on business ethics, doesn’t believe in advertising a DP rating that not ALL sizes will achieve, because of this, Infinity submits the LARGEST window available in each class for testing. Knowing that every window will get AT LEAST that rating.

    Many of these other vinyl companies are advertising scores that small windows achieved during testing, but if you look into their larger units, they are not performing at the same level advertised.

    1. Thanks for posting Larry, but I’m not entirely sure that’s true. Do you have any specific examples of vinyl window companies advertising ratings for smaller windows than the sizes Marvin advertises? If so please let us know. If not, it’s hard to put much weight in the claim.

  9. We are building new home on NC coast (sound side not ocean front). Choosing between vinyl YKK and Marvin Integrity All Ultrex. Marvin warranty is only 20/10 (glass/window components) where the YKK is “Lifetime” and not transferable. If the average homeowner lives in the house for 10 years on average, then the YKK warranty becomes the same as the Marvin.
    My biggest concern is what I have been reading about Marvin not being able to stand up to air infiltration. Would YKK be a better choice? Marvin claims that fiberglass has the same strength as vinyl and it is implied that vinyl will warp/distort more due to thermal differences.

  10. In reading your blog it would appear that you are a strong advocate of vinyl windows. After doing my own research I can understand why. It would seem that there is no brand of wood window that does not have one problem or another. Regrettably, vinyl windows are not appropriate for my 1784 colonial house. The 200+ year old single pane wood windows work great with storm windows. Nonetheless, I must replace 20 year old Pella windows that the former owner installed in one wing of the house. First, having read all of the horror stories of failed wood windows, my first thought is not to go vinyl but rather that the agencies that regulate the quality of new window products are not doing their job. Homeowners who paid thousands to get dysfunctional windows should get their money back from the manufacturers. At present, manufacturers have no incentive to make good windows or to correct mistakes when there are no consequences.

    1. We install many projects with wood windows. We work in DC and we’ve installed beautiful windows historic homes, diplomatic buildings, ambassadors homes, etc.

      You might check out Jeld-Wen wood windows. I like them for their lifetime warranty on the wood frames. You can also get an extruded aluminum clad exterior to protect them even more.

      We’ve also seen great results with WeatherShield windows. The difference you’re seeing is the difference between cheap new construction windows and nice windows. Builders use cheap windows, then they rot, and people say “I hate these wood windows”. It’s not the wood that they hate, it’s the cheap windows.

      If you’re looking for nice wood windows that will last you can find them. I promise.

      1. Mostly just a style difference between the two. I’m not a fan of most fiberglass windows. My thinking has always been that if you want the look of a wood window you should just get a wood window. Most fiberglass window salesmen get the sales pitch all wrong. I’m sure that’s the way they were taught, but it’s a mistake if you ask me.

  11. Interesting thread. I have to replace a half-moon window and 2 double hungs below it because of water leaking. Have been looking at the Marvin Infinity by the quote for all three seems high at ~5K. Anyway, the reason for my post is just to comment on the wind leakage thing. There’s been a lot of back and forth on this but is of note that Consumer Reports only gives them a “good” on this compare with others that are VG or Excellent – only to say that this seems to give some credibility to the gripe as I’m sure consumer’s test similar sized windows under identical conditions.

  12. Sorry, my previous post was in error – consumer’s gave them an excellent rating in wind leakage – it was rain leakage that was only “good” which is hard to understand. But apologies for the errant posting.

    1. No worries, thanks for chiming in. Luckily all windows have air infiltration ratings which makes them very easy to compare.

  13. Infinity from Marvin is rated number one by the leading consumer magazine and has the highest score of any window. Marvin is over 100 years old. Check it out for yourself.

  14. Did the article about differences in window construction material ever get written? I’m in the market for replacement Windows and was thinking fiberglass Infinity would be best. Now I’m reconsidering for maybe vinyl.

  15. interesting thread. in in the market for Windows and the Marvin Infinity looked pretty nice. I’m not sure where the original sticker with the u factor etc. but the infinity window I saw was rated lower than the sticker on this post. Most companies I met with seem to have decent products. Still not sure if one is better than the other out of Thompson Creek, Infinity, and Pella. also saw a revere too. if anyone knows of any other window brands to check out, let me know (I live in MD). I’m replacing some OLD Anderson double hungs from 1979.

  16. Can you please point out where the Air Leakage rating is listed for this Marvin window ? The picture of the NFRC ratings in your review only shows U-Factor, Visible Transmission and Solar Heat Gain, I did not see the Air Leakage spec. I’ve also looked online on the NFRC site and it appears that non of the Marvin windows have an Air Leakage rating.

    1. Remember, if the rating helped them tell a great story they’d advertise it. Give them a ring and ask, the exact ratings vary with the model and the size.

  17. All this back and forth has me totally lost. Now I have zero idea what type of replacement window to install. My home is 42 years young with original double hung, wooden windows. Most are 36 x 67, and 36 x 60, quantity 17 plus two sets of sliding patio doors.

    I’m living on social security. You guys in the “know” sound like manufacturing sales represent.

  18. We have sold and installed over 300,000 replacement windows over the last 26 years. Mostly vinyl for the first 2 decades before we became an Infinity Dealer in the DC market. We also do commercial projects with aluminum, steel, composites, wood and clad windows.
    For Larry with 42 year wood windows I would recommend he looks at high performance storm/secondary windows with low-e glass. No they will not tilt in for easy cleaning but will block noise better than insulated glass plus give great over all thermal performance with out changing the character of your home. Mon-Ray secondary windows are our # 2 seller. Some times used in brand new homes just for noise reduction.
    We carried Comfort-Line fiberglass windows for many years but the Infinity from Marvin just blows them away. In looks, technology and price. Not to mention you just can’t go wrong with a Marvin product.
    Air Infiltration: Folks all the test are done at room temp and in a controlled lab environment. Been there and watched many of them! We had 3 Infinity double hungs “FIELD” tested a couple years ago by a 3rd party lab from York PA. In 40 degree weather they all tested better than Infinity’s posted [try AAMA] results of .10 That is of course based on air pressure equal to 25 MPH wind and tested for negative and positive pressure. Field testing standards allow for a 50% greater rate as in a .15 would have matched their posted results. They got .08, .08 and .06. That is in colder air in the field!! If you spent any time with Dan or Will Marvin you would understand why they post conservative numbers.
    I would love to see vinyl windows tested, even in a lab, at say 30 degrees! That would not change a thing for fiberglass cause it is so stable vs vinyl that will move more than any other window material. With that said Elements and many other vinyl windows are engineered to handle expansion and contraction. With lots of fuzzy weatherstripping and interlocks they will work, they just look crappy and have dirt dams.
    Please don’t compare any vinyl windows room temp air ratings to fiberglass or wood or even aluminum. After all who cares at 70 degrees or so?
    In regards to warranties the number one issue should be who is going to be around to stand behind them? We have seen Schuco, Reliant, Ultra and Traco fold. Yes, Marvin, Andersen and Pella have the advantage in longevity. Marvin is the only one of those that is still family run and on 4th generation. Yes, I’m biased but they are a fantastic company to work with.
    Shopping for replacement windows is difficult and the prices can run all over the place. Take your time! Think about what you really want to accomplish. Well made windows that look natural/correct on your home are not cheap! If you are not going to be there long maybe best not to replace! Very few companies in our industry sell secondary/storm windows but sometimes they may well be your best solution.

    1. Hi Tom, thanks for taking the time to write. I appreciate your reasonable tone compared to some of the other industry folks we’ve heard from lately. Feel free to chime in anytime.

    2. I am planning to be in my home at least another 8 years and my windows need to be replaced. I’ve read about wood, vinyl and fiberglass and have an estimate for Marvin Infinity windows. I live in Colorado Springs at about 6600 ft, with temperatures ranging throughout the year from below zero to 100 intense heat; with windstorms, rainstorms, snow and hail. I noted that Infinity has a High Altitude Limited Warranty Supplement. I hadn’t even thought about altitude being an issue. I would be interested in any feedback about my location/weather/altitude as an issue about which to be concerned. Secondly, it appears from reading this blog and speaking with others that proper installation is a critical component to replacement window operational success. Any feedback on how one who is not construction/remodel knowledgeable would be assured of proper installation? What do we look for? Do we just rely on the reputation, ratings, word-of-mouth regarding the installation company?

  19. Why is it that Marvin doesn’t sell Infinity windows to contractors (unlike their other products), but instead forces you to have them installed by their regional franchises? I’d like to have a single contractor do the siding and windows on my house, but this is impossible with Infinity windows (apparently).

  20. The problem I have with my Marvin Infinity windows are bugs! I get insects inside my windows even when the windows are closed and locked. The insects bring grass into the windows to build nests. The installer offered to spray insecticide to fix the problem instead of actually fixing the windows. I have $25,000 worth of windows that can’t keep bugs out. There is a small gap(1/4 inch, 5mm) in each corner of the window seal. Does anyone know why this gap is there? I’m thinking that is where the bugs are getting in.
    Cols., Oh.

    1. There’s a gap in the corner and not in the center? You can send me over a picture and I’ll take a look. Seems like an unusual situation.

    2. Mr. C……I have Marvin Infinity windows and I have had the exact same problem since they were installed. Only on the second floor, and they are casements. Exactly as you describe. They are coming out to check the rubber seals to see whats going on – FINALLY, after the sales rep told me this can be corrected. We will see.

      1. Let us know how it goes. If you two are having the same issue I bet there are plenty more people also looking for a solution.

  21. Wow! These comments are all over the board. I sold my first fiberglass window project in Gainesville Ga. in March 1994. I’ve sold 25,000 units (give or take) in Georgia, I don’t remember how many in the Caribbean and the Ga./N.C. Mtns. I’ve sold four brands, two U.S. manufacturers, two Canadian manufacturers. The products are good but NOT great. There is a reason none of these products have a comprehensive lifetime warranty and come with a mariad of disclaimers. I won’t go into that now because it’s boring. I have personally completed hundreds of case studies of projects I’ve sold and the best results come from high end vinyl products that are reinforced with fiberglass or other thermally dead material, polyurethane filled jambs, head and sill, 360 degree welded jamb to sill and dedicated extrusions. You can pitch all you want in this format, but I’ve done serious homework over the past 23 years and it’s my opinion that extreme high end vinyl out performs fiberglass in most climates every time. The cost vs. value is simply not on the side of fiberglass.

    1. Hi Kurt, thanks for taking the time to post a comment. I tend to agree with you. If half the claims made by fiberglass window salespeople could be proven they’d make a whole lot more money. When they start making claims that can’t be backed up it tells me they know they’re in a pretty weak position.

      1. We’re in Vermont near the Quebec border and will be upgrading two 20 year old wooden sliding glass door units for doors with low e glass in hopes they’ll keep our home more comfortable in both the summer and winter. Are we expecting too much from low e glass or does it really make a difference?

        1. The low-e glass makes a pretty big difference. I wouldn’t get new windows without it. Good luck with the project!

    2. You said “….The cost vs. value is simply not on the side of fiberglass…”. Could you please be specific for cases where fiberglass cost more 10%, 20%, and 30%, any case when it is on the side of fiberglass. Thank you!

      1. I know you didn’t ask me, but in my mind the value in fiberglass is in the look. They look more like wood windows and if that’s worth the cost premium then they’re a good deal for you. Fiberglass windows tend to have similar efficiency ratings as vinyl windows and they tend to have significantly worse air infiltration rates than nicer vinyl windows. The only real advantage in my mind is the look.

        1. Needing 15 windows (8 double hung, 6 gliders, and 1 casement), siding, and roofing for my 1971 built split level in the Midwest. Replacing cheap vinyl windows installed 23 years ago. I have looked at the Pella 350 vinyl (pretty window with clean mitered corners but I don’t like the pocket sill which is the type that I have now with my cheap vinyl windows), Marvin Integrity wood/Ultrex (not sure I want wood due to potential maintenance or potential rot issues), Marvin Integrity All Ultrex (don’t like the double hung tilt out release look and they feel flimsy), Marvin Infinity (I agree the prettiest looking of the group but my issue is only two dealers in my area that will also do siding but not roofing). I have also looked at Sunrise vinyl windows (one of the Marvin Infinity dealers is also a Sunrise dealer) but I did not like the mitered corner appearance. And I concerned about using a manufacturer that does not have a long history. But it does use a sloped sill for the double hungs, which I like. The prices given by the contractor that I like (he does windows, siding, and roofing) are Marvin All Ultrex and Pella 350 are close and the lowest, Marvin wood/Ultrex is more, and Marvin Ultimate substantially more . I have not gotten a quote yet for Marvin Infinity because it would mean that I would have to find a separate roofing company. The contractor that I liked also sells Simonton but the appearance of the 5500 series did not appeal to me (again, the mitered corners). I am planning on living in the house for at least the next 20 years. It seems that all my choices require some sort of compromise. My wife thinks that the Marvin wood/Ultrex would give us the best value and allow us to use the contractor we like best. Any suggestions or comments?

          1. I tend to prefer wood over fake wood so the wood/ultrex would be they way I would lean. Your post brings up a question we hear frequently about hiring one contractor to do multiple projects. That seems to be a priority for a lot of folks, but it’s not always the best solution.

            When some window companies see that you have a big project and you also want roofing or siding it’s easy for them to say, “sure, we can definitely help with your roof as well”. Unfortunately they may not be roofing or siding experts and may just call a friendly subcontractor they know to handle the roof. That may work out fine and it may not.

            There isn’t really much of an advantage in combining several projects into one. You may end up with a company that
            s great at one thing trying to do three things which could be a problem.

            Of course, it could also work out just fine.

            Have you picked one yet and how are things going?

  22. Boy am I glad you created this site! I am looking to replace 8 double hung windows in my house. The first dealer that came out sold the Marvin Infinity windows. They wanted (and I kid you not) $14,412. The windows were 40×54 each w/ Low E2. They did recommend new construction windows rather than inserts but that was it. No other bells or whistles.

    The next dealer who came by recommended the Alside Sheffield and came in at $4,000 for all 8. I have a soft-lite and okna dealers coming later in the week so hopefully they’ll bid are closer to the 4k!

    Thanks so much!

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