Nex-Gen Windows & Doors

Miles and I had a broken window, one of six, that was installed in
2023. Nex-Gen replaced it free of charge. Jacob Gonzales was the installer. He was very efficient and pleasant and did an outstanding job.
We give him a 5-star recommendation.
Miles Griffin Read more >

Owner Ted Rajewski came to the house to give us a quote on additional windows. Great service by this company as we have purchased product from them in the past. Read more >

We have been trying to replace windows on our home for several years, finding the process to be tedious and overwhelming at times. Ted R from Next Gen changed that, and after years we have found a reliable company with an excellent reputation who has finally given us an opportunity to replace the windows in our home. We would highly recommend Ted R. and Next Gen for window replacements. Read more >

Beautiful product and flawless install. Eduardo and team were very meticulous in installing and our sales experience was really great. Very pleased. Read more >

Nex-Gen’s customer service is excellent. Mike D was just at our home and did an excellent job adjusting a new door that Nex-Gen had installed in our home. Read more >

Our experience with Nextgen has been nothing short of exemplary. Ted Rajewski was our first contact with the company. His years of extensive experience, comprehensive knowledge and overall friendly demeanor made our transactions a joy. The installation was a breeze with Mike, Tony and the crew. We love the view from our big, unpaned windows and our utility bills have been noticeably lower. We are planning to have a patio door replaced next month. I highly recommend Nextgen Doors and Windows. Read more >

My single-level home built in 1951 still had original windows, so it was time to upgrade to a more energy efficient and updated option. After meeting with several other window install vendors (both large and small businesses) I decided to move forward with Nex-Gen because of price and customer service experience in the sales process. I am SO glad I did. They gave me all the information I needed throughout the ordering and delivery process of materials to their warehouse, and scheduling install was a breeze. On install day the crew arrived on the earlier side of the time frame I had been given, and after a walkthrough with me to manage my expectations of their process, they began work! What was supposed to take a day and a half only took 9 hours! I am just so impressed and could not be more pleased with their work and customer service throughout every step of the process. Choose Nex-Gen!! Read more >

Great shower and work was done carefully and efficiently. Work exceeded expectations and even took care of an extra line for me which was great. Read more >

Nex-Gen was super professional and stayed until our new sliding door was just right. They cleaned up and it was almost like they were never even here. I would definitely recommend this company! Read more >

Mike came out and replaced the glass in our fiberglass door. Very pleasant and professional like everyone we have worked with at Nex-Gen. Read more >

Excellent completed tub to shower conversion with a truly clean, professional experience. The installer’s skills & precision to detail sincerely impressed me & Noah was very respectful. Was worth the investment, very happy here. Thank you, Nex-Gen, I would use you again in a heartbeat! Read more >

Mike was great repairing my broken window. He also added a latch for my patio screen door. Mike, Lexi and Nex-Gen have been awesome, I love my windows. And this recent repair was a great experience (the broken window was my fault 🙂) - they were great with scheduling and communicating. I highly recommend Nex-Gen windows! Read more >

I wanted to give a shout out for Nex-Gen and Ted Rajewski. In 2017 we installed 24 windows from Nex-Gen in our mountain home and are 100% satisfied with their quality and durability even at extreme weather conditions. Now we are considering exterior doors for the same home to complete the renovation. We were excited to see Ted again at our home to discuss this additional product and will be anxious to see it through completion this year. These guys are the best and I'm a returning customer to prove it. Read more >

Very nice installers and excellent installation! Thank you! Read more >

Mike and Noah did a great job installing my window. Read more >

My new windows were installed July 3rd, a month earlier than anticipated! I cannot quite believe how wonderful they are! Yes, I expected my new windows to be better than my old ones but I didn't know the difference would be so stark! I immediately noticed how clear the trees outside my windows looked! It's like a film was lifted. Then I noticed that I didn't have to close my kitchen blinds to get rid of the sun glare in the morning; the faint tint, which I'd forgotten about, took care of that! I've already noticed that I can have my air conditioner turned up a few degrees and it doesn't come on as often. Everyone I dealth with at Nex-Gen was so nice! There was no hard sell at all from Teri when I met her to discuss my needs. I was so relieved! The installation went perfectly and all of the mess was cleaned up when they left.I don't see any way my whole new window experience could have... Read more >

Nex-Gen did a fantastic job for us. What else would you expect from such a highly rated company? Joe was easy to work when as project manager and Robert did a great job as the on-site foreman. Everything looks great. They did a nice job cleaning up after themselves. Read more >

This company installed a new bathtub installed the exact window I wanted and replaced the old tile. The installer was very professional, courteous, asked questions, kept the area clean and just a shear pleasure to be around - his name is Noah. Nex-Gen should do whatever it takes to keep Noah on their payroll! Read more >

Update: After my review they made quick contact and the window was replaced. Thanks.

I had all the windows in my house replaced in March. One of the windows had a crack and I was told they would be getting us a replacement. It has been well over a month and no one will give us an update. Read more >

We wanted to keep the existing wrought iron doors on the front double-entry, but to do so, we needed to order CUSTOM doors. We were told it was doable so we proceeded to order custom energy efficient doors.

When the doors arrived with the installers, there was mass confusion! No one knew how to install our wrought iron doors! Angelo Martinez, Project Manager, was contacted by the installers and boy-oh-boy, he was our saving grace!!

He quickly arrived at our home and was able to resolve the situation for the installers. He devised a plan of action, for the installers, and they immediately set-about following his instructions.

They completed the installation within the allotted time-frame and without a hitch thanks to Angelo Martinez! He is knowledgeable, professional, customer oriented and all around nice guy! Good work NEX-GEN and thank... Read more >

Nex Gen installed a front door for us. We were very pleased at the quality of the product, workmanship, and professionalism. Read more >

We have had a GREAT experience with Nex-Gen. Ted Rajewski worked great with us getting us new windows (14!) for our house. We made a BIG mistake and went with someone different a couple years ago for three windows and BOY - Nex-Gen window quality is so much better. Installation was smooth, great communication. All of our interactions with all of their staff, sales, measuring and installers and final inspection was great. We wish we had made the choice right the first time and sooner. Ted listened to our needs and did a great job working with us! Read more >

Wonderful Company! Highly recommend them and we have to our neighbors and our son! The staff was very nice, efficient & skilled! They protected our surroundings & cleaned up very well after the job was done. They made sure we were happy! A foreman came by to make sure all was tip top. I finally got my garden window and I’m a happy wife, happy life with view of beautiful Rockies! Read more >

Great windows and amazing employees. Read more >

What a great company! We had the best experience with Nex-Gen in their replacing some windows for us. Our project seemed to come with a couple of challenges and we could not have had a better outcome! Ted Rajewski was our sales rep who came to look at what we needed. He has a wealth of experience and was confident in a great outcome. We had some additional wood around the interior of the old windows (three windows) for attaching our wood shutters. We wondered if that wood needed to come out for the install. Ted assured us that if that was needed, they would put it all back together and it would look the same. As it turned out, the installers did the job without removing the wood at all! Then there was our old garden window over our kitchen sink, for which we chose an awning window. My concern was we would lose a lot of depth on the interior window sill. Tony, our measuring tech from... Read more >

After mixup on initial bid process, all went well. Nex-Gen worked around our schedule, crew was on time, on task, pleasant to have “invade” our home, accommodating, polite, knowledgeable, careful and neat. Crew leader Robert continually checked that we were satisfied at every step. He did a couple of extra “fix ups” in our window openings. The job by nature is messy but they did a complete cleanup. Project Manager, Joe Martinez, checked several times, and reported my concerns with the product to Marvin rep. He also advised on finishing the windows (we will seal the ultrex& wood before Nex-Gen returns to fill/caulk seams). He assured us that even though we accepted the finished installation, if we note additional items, Nex-Gen will return and address those concerns. Although we have some concerns with the quality of the Marvin finish work, we are pleased with our... Read more >

A good experience from purchase to installation a professional job well done Read more >