Your Choice For Best-In-Class Performance And Luxury

Enerlux offers durable, energy-efficient fiberglass windows and doors, designed for precision fit and customization. Stronger than vinyl and aluminum, our products provide long-lasting performance and superior thermal efficiency. We prioritize quality and customer service, serving both residential and commercial projects.

Your Choice For Best-In-Class Performance And Luxury

Enerlux offers durable, energy-efficient fiberglass windows and doors, designed for precision fit and customization. Stronger than vinyl and aluminum, our products provide long-lasting performance and superior thermal efficiency. We prioritize quality and customer service, serving both residential and commercial projects.

Your Choice For Best-In-Class Performance And Luxury

Enerlux offers durable, energy-efficient fiberglass windows and doors, designed for precision fit and customization. Stronger than vinyl and aluminum, our products provide long-lasting performance and superior thermal efficiency. We prioritize quality and customer service, serving both residential and commercial projects.

Your Choice For Best-In-Class Performance And Luxury

Enerlux offers durable, energy-efficient fiberglass windows and doors, designed for precision fit and customization. Stronger than vinyl and aluminum, our products provide long-lasting performance and superior thermal efficiency. We prioritize quality and customer service, serving both residential and commercial projects.

Your Choice For Best-In-Class Performance And Luxury

Enerlux offers durable, energy-efficient fiberglass windows and doors, designed for precision fit and customization. Stronger than vinyl and aluminum, our products provide long-lasting performance and superior thermal efficiency. We prioritize quality and customer service, serving both residential and commercial projects.

WELCOME TO ENERLUX – YOUR CHOICE
FOR BEST-IN-CLASS PERFORMANCE AND LUXURY

Enerlux offers durable, energy-efficient fiberglass windows and doors, designed for precision fit and customization. Stronger than vinyl and aluminum, our products provide long-lasting performance and superior thermal efficiency. We prioritize quality and customer service, serving both residential and commercial projects. Our company’s mission is to provide our customers with the highest quality, most cost effective, and most energy efficient windows and doors for the new construction and replacement. market.

WHAT DO WE DO?

Simply put, we design, engineer, and manufacture superior fiberglass window and door products with industry-leading quality and performance.

Our windows are durable, fully customizable, low-maintenance, and offer some of the best energy efficiency ratings available today. For every project, we guarantee exact dimensions for precision fit and a tight seal.

WHAT DO WE DO?

Simply put, we design, engineer, and manufacture superior fiberglass window and door products with industry-leading quality and performance.

Our windows are durable, fully customizable, low-maintenance, and offer some of the best energy efficiency ratings available today. For every project, we guarantee exact dimensions for precision fit and a tight seal.

WHY WORK WITH ENERLUX?

Because we are an established company dedicated to high-quality workmanship, attention to detail, and exemplary customer service. We have become the fastest growing and most energy efficient window frame solution in the United States.

With deep experience across a variety of commercial and residential projects, we will work hard to find a solution that best fits your unique specifications and budget.

WHY WORK WITH ENERLUX?

Because we are an established company dedicated to high-quality workmanship, attention to detail, and exemplary customer service. We have become the fastest growing and most energy efficient window frame solution in the United States.

With deep experience across a variety of commercial and residential projects, we will work hard to find a solution that best fits your unique specifications and budget.

WHY CHOOSE FIBERGLASS?

When your goal is long-term performance, fiberglass makes an excellent choice for your window and door frame needs. Fiberglass has a variety of benefits, including:

  • Durability– eight times stronger than vinyl and twice as strong as aluminum, and resistant to weather damage, rot, chipping, rust, or fading
  • Longevity – fiberglass windows are expected to last 30-40 years
  • Energy Efficiency– fiberglass has thermal conductivity 500 times less than aluminum and has a low coefficient of thermal expansion- keeping your space comfortable

We offer a variety of fiberglass window and door products, including casement, picture, and awning windows and patio doors.

WHY CHOOSE FIBERGLASS?

When your goal is long-term performance, fiberglass makes an excellent choice for your window and door frame needs. Fiberglass has a variety of benefits, including:

  • Durability– eight times stronger than vinyl and twice as strong as aluminum, and resistant to weather damage, rot, chipping, rust, or fading
  • Longevity – fiberglass windows are expected to last 30-40 years
  • Energy Efficiency– fiberglass has thermal conductivity 500 times less than aluminum and has a low coefficient of thermal expansion- keeping your space comfortable

We offer a variety of fiberglass window and door products, including casement, picture, awning, and patio doors.

5.0
Based on 78 reviews
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Dwight Bird
14:16 16 Sep 25
My Enerlux experience has been fantastic! From Jim the salesman to Angela and Lisa and everyone in the office. To Mike and Danny who painstakingly packed our windows on the truck we brought to the factory. To Zach the installer who patiently walked me through my installation questions and concerns. I'm only about halfway through my installs, but they're going great thanks to the Enerlux team!
Dwight Bird
14:16 16 Sep 25
My Enerlux experience has been fantastic! From Jim the salesman to Angela and Lisa and everyone in the office. To Mike and Danny who painstakingly packed our windows on the truck we brought to the factory. To Zach the installer who patiently walked me through my installation questions and concerns. I'm only about halfway through my installs, but they're going great thanks to the Enerlux team!
Mike Witherite
18:07 09 Sep 25
We chose Enerlux windows for the performance, ease of maintenance and cost and are extremely happy with all three. The triple pane windows perform amazingly well in our mountain home. Additionally on windy days it is quiet as can be inside and the screens are a piece of cake to install and remove for cleaning. very satisfied with the windows, doors, and service we have received from Enerlux
Mike Witherite
18:07 09 Sep 25
We chose Enerlux windows for the performance, ease of maintenance and cost and are extremely happy with all three. The triple pane windows perform amazingly well in our mountain home. Additionally on windy days it is quiet as can be inside and the screens are a piece of cake to install and remove for cleaning. very satisfied with the windows, doors, and service we have received from Enerlux
Scott Quandahl
20:42 26 Aug 25
We love our windows from Enerlux. The look and quality is amazing. I am very glad we chose them over the other options presented to us when we built our house.

The customer service from everyone at Enerlux was great as well. Everyone we dealt with was pleasant to work with and they went above and beyond our expectations.
Scott Quandahl
20:42 26 Aug 25
We love our windows from Enerlux. The look and quality is amazing. I am very glad we chose them over the other options presented to us when we built our house.

The customer service from everyone at Enerlux was great as well. Everyone we dealt with was pleasant to work with and they went above and beyond our expectations.
Dave H
03:39 20 Aug 25
Just had another round of windows replaced with Enerlux windows installed by Tevelde And Co. in the Omaha, NE area.

The first round we went with the double pane casements and fixed windows and was impressed with the overall quality, the ease to open/close the windows, double latch locking mechanism, flex screen that is barely noticeable, and ability to clean the outside from inside for our 2nd story windows. I was a little hesitant going with Enerlux as they weren't one of the big-name window brands I was originally looking at, but comparing spec to spec and price I took the leap and wasn’t disappointed.

For this last round we went with the triple pane, LoE 366 glass with a grey tint. I couldn’t be happier with the reduction in sound and not getting baked by the sun sitting next to my windows, even compared to my old windows that I installed a solar tint to. Todd and team with Tevelde And Co. did another awesome job installing these large 6 ft windows and making sure I was happy with the tint options by getting samples before finalizing the order.

Only regret was not going with the triple pane for the front of house, but certainly will for the next round in our bedrooms.
Dave H
03:39 20 Aug 25
Just had another round of windows replaced with Enerlux windows installed by Tevelde And Co. in the Omaha, NE area.

The first round we went with the double pane casements and fixed windows and was impressed with the overall quality, the ease to open/close the windows, double latch locking mechanism, flex screen that is barely noticeable, and ability to clean the outside from inside for our 2nd story windows. I was a little hesitant going with Enerlux as they weren't one of the big-name window brands I was originally looking at, but comparing spec to spec and price I took the leap and wasn’t disappointed.

For this last round we went with the triple pane, LoE 366 glass with a grey tint. I couldn’t be happier with the reduction in sound and not getting baked by the sun sitting next to my windows, even compared to my old windows that I installed a solar tint to. Todd and team with Tevelde And Co. did another awesome job installing these large 6 ft windows and making sure I was happy with the tint options by getting samples before finalizing the order.

Only regret was not going with the triple pane for the front of house, but certainly will for the next round in our bedrooms.
Jeff Hurliman
18:58 22 Jul 25
Things went great . You guys did a phenomenal job of crating those windows up. They all made it here safe and sound. We have got all the windows installed and the house wrapped at this point. Builders installing them said they were the nicest windows they have ever installed. We were all very impressed . Thank you for the great service and the great product!!
Jeff Hurliman
18:58 22 Jul 25
Things went great . You guys did a phenomenal job of crating those windows up. They all made it here safe and sound. We have got all the windows installed and the house wrapped at this point. Builders installing them said they were the nicest windows they have ever installed. We were all very impressed . Thank you for the great service and the great product!!
Joan Wright
03:10 13 Jun 25
EnerLux windows are beautiful, well constructed windows. We only needed a single window at this time for our bathroom remodel. Since the window is inside a shower, it was essential for it to be compatible for that purpose. Fiberglass was totally our answer. We ordered a stationary window with fluted glass and are very pleased with the appearance and quality. The staff and sales people are so helpful and treat you well even if you are buying a single window. We are so hopeful to add a few more of these amazing EnerLux windows at a time in our 1966 home that currently has original windows.
Joan Wright
03:10 13 Jun 25
EnerLux windows are beautiful, well constructed windows. We only needed a single window at this time for our bathroom remodel. Since the window is inside a shower, it was essential for it to be compatible for that purpose. Fiberglass was totally our answer. We ordered a stationary window with fluted glass and are very pleased with the appearance and quality. The staff and sales people are so helpful and treat you well even if you are buying a single window. We are so hopeful to add a few more of these amazing EnerLux windows at a time in our 1966 home that currently has original windows.
Elizabeth Augustine
00:49 30 Apr 25
Quality is amazing. Investing in windows is worth it with EnerLux. So happy we decided to go with them. Mark and the team have been amazing to work with!
Elizabeth Augustine
00:49 30 Apr 25
Quality is amazing. Investing in windows is worth it with EnerLux. So happy we decided to go with them. Mark and the team have been amazing to work with!
Zach McDermott
20:09 03 Jan 25
Ordered 3 windows for my house and plan on getting more this next year or so. Incredible quality for a good price!
Zach McDermott
20:09 03 Jan 25
Ordered 3 windows for my house and plan on getting more this next year or so. Incredible quality for a good price!
Saileahgaz
03:49 22 Dec 24
In the process of ordering our window package from Enerlux! Its been a great experience! As a homeowner purchasing direct from the manufacturer I did not expect to be treated so well! The sales staff that I have worked with have been incredibly patient and willing to go way beyond what I expected. Every question we have had has been answered with care and expertise. The reviews for this company are phenomenal and I understand why. I fully anticipate receiving a very high quality product. Thank you @Enerlux!
Saileahgaz
03:49 22 Dec 24
In the process of ordering our window package from Enerlux! Its been a great experience! As a homeowner purchasing direct from the manufacturer I did not expect to be treated so well! The sales staff that I have worked with have been incredibly patient and willing to go way beyond what I expected. Every question we have had has been answered with care and expertise. The reviews for this company are phenomenal and I understand why. I fully anticipate receiving a very high quality product. Thank you @Enerlux!
Rosemary
20:01 18 Dec 24
Fantastic windows and doors and customer service. We ordered enough windows for a 6400 sq ft house. The lead time was really reasonable. All the windows arrived well packaged and none were damaged in transit. We installed them ourselves and it was do-able. Love that they are fiberglass. REALLY high quality. We also ordered their 9ft tall siding doors- a 6ft wide and a 12ft wide and they are gorgeous. They create such a statement in the main room. We accidentally broke a window (actually only 2 of the 3 panes broke) due to a failure in our suction cup and the process of ordering new glass to replace it was pain free and affordable. This is such a great company to work with. I would not hesitate in ordering from them if we build again.
Rosemary
20:01 18 Dec 24
Fantastic windows and doors and customer service. We ordered enough windows for a 6400 sq ft house. The lead time was really reasonable. All the windows arrived well packaged and none were damaged in transit. We installed them ourselves and it was do-able. Love that they are fiberglass. REALLY high quality. We also ordered their 9ft tall siding doors- a 6ft wide and a 12ft wide and they are gorgeous. They create such a statement in the main room. We accidentally broke a window (actually only 2 of the 3 panes broke) due to a failure in our suction cup and the process of ordering new glass to replace it was pain free and affordable. This is such a great company to work with. I would not hesitate in ordering from them if we build again.
Sue Volkmann
17:11 17 Dec 24
We are so happy with our windows. We bought 5 large picture windows (sections). The design of these windows made it very easy for us to handle and install. They were everything we were hoping for and our view is amazing. We will buy these windows again. I would highly recommend this company. Top notch product and customer service. Special thank you to Zach and Taylor.
Sue Volkmann
17:11 17 Dec 24
We are so happy with our windows. We bought 5 large picture windows (sections). The design of these windows made it very easy for us to handle and install. They were everything we were hoping for and our view is amazing. We will buy these windows again. I would highly recommend this company. Top notch product and customer service. Special thank you to Zach and Taylor.
Vicente Mello
20:01 13 Dec 24
Amazing windows and great customer service. Order delivered on time
Vicente Mello
20:01 13 Dec 24
Amazing windows and great customer service. Order delivered on time
Eric Irwin
19:18 13 Dec 24
Very nice windows and doors. I purchased 15 windows (9 awning and 6 picture) as well as 4 patio doors. I chose Enerlux for their pricing (better than the big 3), their capability of building big awning windows and patio doors, and their willingness to work with a homeowner directly. I have not gotten them all installed, as winter has gotten in the way, but the ones that I have installed are great.

Working with the salesman was a little frustrating at times, but in the end I think it was worth the effort. The delivery driver was less than capable too, but at least he listened and started to catch on by the time we unloaded everything.
Eric Irwin
19:18 13 Dec 24
Very nice windows and doors. I purchased 15 windows (9 awning and 6 picture) as well as 4 patio doors. I chose Enerlux for their pricing (better than the big 3), their capability of building big awning windows and patio doors, and their willingness to work with a homeowner directly. I have not gotten them all installed, as winter has gotten in the way, but the ones that I have installed are great.

Working with the salesman was a little frustrating at times, but in the end I think it was worth the effort. The delivery driver was less than capable too, but at least he listened and started to catch on by the time we unloaded everything.
Rick Van Handel
16:36 06 Aug 24
I ordered a full house package of windows for our new construction home. It's a bit of a nerve racking experience to take the plunge with a smaller company, but the windows looks beautiful, arrived in perfect shape, and installed without issue. The customer service was exceptional throughout the process.
Rick Van Handel
16:36 06 Aug 24
I ordered a full house package of windows for our new construction home. It's a bit of a nerve racking experience to take the plunge with a smaller company, but the windows looks beautiful, arrived in perfect shape, and installed without issue. The customer service was exceptional throughout the process.
COLORADO LIFESTYLES
15:27 06 Aug 24
Enerlux not only produces an amazing quality window, they are a pleasure to do business with.
COLORADO LIFESTYLES
15:27 06 Aug 24
Enerlux not only produces an amazing quality window, they are a pleasure to do business with.
bob murdock
19:37 20 May 24
We're a high-end custom home builder & have worked with all of the major top quality window lines over the years. We were recently introduced to Enerlux and were quite impressed with their product, and also with the ease of ordering, customization, etc. It all went very smoothly and we and our clients really like the finished product.
bob murdock
19:37 20 May 24
We're a high-end custom home builder & have worked with all of the major top quality window lines over the years. We were recently introduced to Enerlux and were quite impressed with their product, and also with the ease of ordering, customization, etc. It all went very smoothly and we and our clients really like the finished product.
Neil Lichtman
13:34 24 Jan 24
We have been interested in adding a fiberglass window to our product line. We finally found Enerlux, and Zach Birchel did not disappoint. We worked for a year to land a commercial project, and everyone at Enerlux was extremely helpful in getting the project completed without difficulty. We even ordered three openings wrong, and they turned around and shipped the new windows so the project was not delayed. THANK YOU!
Neil Lichtman
13:34 24 Jan 24
We have been interested in adding a fiberglass window to our product line. We finally found Enerlux, and Zach Birchel did not disappoint. We worked for a year to land a commercial project, and everyone at Enerlux was extremely helpful in getting the project completed without difficulty. We even ordered three openings wrong, and they turned around and shipped the new windows so the project was not delayed. THANK YOU!
John White
13:22 24 Jan 24
Six stars -esp in the context of the USA residential window industry today Let me state at the outset some of my comments will be unguarded, but I want to be taken seriously and not for an amateur, paid shill or bot with readers facing the awesome challenge of finding windows that will last 50 plus years and not break the bank. It’s manifest that most established American widow makers have gotten greedy and lazy, focus on marketing and expensive dealer networks, an in many cases , cheapened the quality of heir product. I know, I’ve been there. As a small builder in process of building a house for my daughter, I scoured the universe for well over a year trying to max out her window budget. Once you eliminate Euro windows as too bulky and frames too wide, and real fulfillment questions from overseas (and on time ? And what if a window broken in transit ? That’s a 3 month delay even with the best customer service; I’ve know several boutique Italian manufacturers will send a replacement air freight at 3x the cost of the indoor itself , but if you have to ask how what those windows cost in the first place, you cant afford them) Also the superiority of fiberglass as a frame material becomes quickly apparent. , and Enerlux corner design in particular. Durability, strength, thin lines, top euro quality hardware, etc. Whether you are going for a modern or traditional look, if your budget allows for anything beyond an Anderson 100 series, you HAVE to look at Enerlux as an option. Look, SChuco, Loewen, Western , Raynor , even Marvins high end, make great windows and offer solid customer service ….. if your are paying $100k plus for an architect, or have more money than brains, , hey go for it….you cant go wrong with them . A number of my clients have ; BUT at a steep price differential, and NOBODY has a better quality frame or , customer service than Enerlux. (And for course they are all using-or should use-Cardinal glazing units .While a smaller firm, there is NO way they wont be around for the lifetime of your windows. And in this case, buy AMERICAN -makes GREAT sense from a fulfillment and follow thru service standpoint. Their product, attention to detail and customer service make it impossible for this company not to grow and endure. Customer service is UNPARALLELED- just pick up the phone and try it-you get a real attentive knowledgeable person. You must pay considerably more to get a remotely comparable Marvin ( let alone Weathershield or Pella (dont even start !! LOL ) custom color fee set ups are a fraction of the bigger players. Unless you are seeking passive house standards, are willing to try some of the newer-but unproven - hi-tech glazing options being offered by some manufacturers in the western states, OK with Euro UPVC, not USA vinyl (nothing wrong with them if UV exposure reasonable and youre ok with the look, and size limitations ) can wait out long lead times, countenance dealing with a middle man importer (will they be around ten years from now?) Buying quality windows is a jungle and /or expensive these days- do yourself a favor - go to their web site, dive deeply into it , and get your first quote from Zach Birkel and his team. And if you are in the Mid ATlantic area, happy to show you ours.
John White
13:22 24 Jan 24
Six stars -esp in the context of the USA residential window industry today Let me state at the outset some of my comments will be unguarded, but I want to be taken seriously and not for an amateur, paid shill or bot with readers facing the awesome challenge of finding windows that will last 50 plus years and not break the bank. It’s manifest that most established American widow makers have gotten greedy and lazy, focus on marketing and expensive dealer networks, an in many cases , cheapened the quality of heir product. I know, I’ve been there. As a small builder in process of building a house for my daughter, I scoured the universe for well over a year trying to max out her window budget. Once you eliminate Euro windows as too bulky and frames too wide, and real fulfillment questions from overseas (and on time ? And what if a window broken in transit ? That’s a 3 month delay even with the best customer service; I’ve know several boutique Italian manufacturers will send a replacement air freight at 3x the cost of the indoor itself , but if you have to ask how what those windows cost in the first place, you cant afford them) Also the superiority of fiberglass as a frame material becomes quickly apparent. , and Enerlux corner design in particular. Durability, strength, thin lines, top euro quality hardware, etc. Whether you are going for a modern or traditional look, if your budget allows for anything beyond an Anderson 100 series, you HAVE to look at Enerlux as an option. Look, SChuco, Loewen, Western , Raynor , even Marvins high end, make great windows and offer solid customer service ….. if your are paying $100k plus for an architect, or have more money than brains, , hey go for it….you cant go wrong with them . A number of my clients have ; BUT at a steep price differential, and NOBODY has a better quality frame or , customer service than Enerlux. (And for course they are all using-or should use-Cardinal glazing units .While a smaller firm, there is NO way they wont be around for the lifetime of your windows. And in this case, buy AMERICAN -makes GREAT sense from a fulfillment and follow thru service standpoint. Their product, attention to detail and customer service make it impossible for this company not to grow and endure. Customer service is UNPARALLELED- just pick up the phone and try it-you get a real attentive knowledgeable person. You must pay considerably more to get a remotely comparable Marvin ( let alone Weathershield or Pella (dont even start !! LOL ) custom color fee set ups are a fraction of the bigger players. Unless you are seeking passive house standards, are willing to try some of the newer-but unproven - hi-tech glazing options being offered by some manufacturers in the western states, OK with Euro UPVC, not USA vinyl (nothing wrong with them if UV exposure reasonable and youre ok with the look, and size limitations ) can wait out long lead times, countenance dealing with a middle man importer (will they be around ten years from now?) Buying quality windows is a jungle and /or expensive these days- do yourself a favor - go to their web site, dive deeply into it , and get your first quote from Zach Birkel and his team. And if you are in the Mid ATlantic area, happy to show you ours.
Ardis Koehn
17:11 27 Dec 23
I'm a retired teacher and wanted the best windows for the buck, so I researched the internet for fiberglass windows and doors. I found them (ones superior to others with incredible price)...EnerLux Windows made in Crete, NE! I even toured the plant with the owner, Mark, where they were made and was so impressed. Hiring an experienced window installer who had never installed this brand commented, "These are awesome," made me feel great. EnerLux even had one of their top guys, Zach, come out 2 times to answer our questions and assist! Beautiful windows!
Ardis Koehn
17:11 27 Dec 23
I'm a retired teacher and wanted the best windows for the buck, so I researched the internet for fiberglass windows and doors. I found them (ones superior to others with incredible price)...EnerLux Windows made in Crete, NE! I even toured the plant with the owner, Mark, where they were made and was so impressed. Hiring an experienced window installer who had never installed this brand commented, "These are awesome," made me feel great. EnerLux even had one of their top guys, Zach, come out 2 times to answer our questions and assist! Beautiful windows!
Sean Bottger
16:25 13 Oct 23
After 20 years of remodeling and construction in the Lincoln area, I have installed and worked with the majority of window brands. When deciding what window to use for a new house, my family moved into. I stumbled across Enerlux. Boy am I glad that I did. Everyone in the company was a pleasure to work with and these windows are by far the best windows I have ever installed. The difference in noise and air quality in our home is massive. I have already referred them to numerous other people and will continue to share my experience. They are a small company with quality set as their number one goal. I look forward to working with them in the future. Also, a big shout out to Zach Birkel who did an amazing job working with on the sale from start to finish!
Sean Bottger
16:25 13 Oct 23
After 20 years of remodeling and construction in the Lincoln area, I have installed and worked with the majority of window brands. When deciding what window to use for a new house, my family moved into. I stumbled across Enerlux. Boy am I glad that I did. Everyone in the company was a pleasure to work with and these windows are by far the best windows I have ever installed. The difference in noise and air quality in our home is massive. I have already referred them to numerous other people and will continue to share my experience. They are a small company with quality set as their number one goal. I look forward to working with them in the future. Also, a big shout out to Zach Birkel who did an amazing job working with on the sale from start to finish!

Want more information about our fiberglass windows and doors? Click the Learn More button!

Want more information about our fiberglass windows and doors? Click the Learn More button!