Nex-Gen Windows & Doors

Daniel and David was awesome had a great time with them

Great experience with Dan and Dave. Authentic, polite knowledgeable came in with good pricing, made a deal.

Ted came out to look at our windows after we were inundated with silt from the latest wind storm. In 2 minutes he said we do not need new windows, just maintenance and he provided a referral. This honest man saved us about $150,000. This company just wants to help people.

Nex-Gen installed all the windows in my house and I couldn't be happier. The windows are Marvin
Infinity top quality and look fantastic. They came back to stain the framing and did a very beautiful and meticulous job. Everyone I've worked with at this company has been very helpful and friendly. I highly recommend them. UPDATE: 2026
Four years after these windows were installed I called NexGen to get an estimate on installing a patio door. I am so happy that Ted Rajewski was still with them. Ted came out again and went over all our options. He was very professional and knowledgeable.
He took the time to listen to our wants and needs and made great suggestions. We decided on a Marvin Infinity patio door as we've been very impressed with our windows and might as well stay with a great product and company.

At the Northern Colorado Home Show with NexGen in the booth next to me. I am enjoying the friendliness and professionalism of Danny and Daniel. The way they interact with potential customers is a lesson to anyone in sales. Thanks to you both for making this an enjoyable show.

I was on staff at the Nationwide expos home show and Daniel and trey were amazing salesman and very nice to everyone on the staff!

I am in the process of replacing my second set of windows with NexGen and it has continued to be a great experience. I worked with Ted and Clark back in 2022 and Ted again this year. I truly appreciate the quick response, straightforward approach, talented install team and great product.

Our Infinity windows have been great. I needed assistance with setting a window back in after washing it...it was the day after Christmas and I called Ted and he said that he would be right out. True to his word,Ted arrived and took care of the issue...fantastic after sale custumer service! Thanks Ted!

We love our Marvin windows from Nex-Gen. The entire process from meeting Mitchel Q, who's product knowledge helped us select the best windows for our home. His guidance through the entire process was very much appreciated as well as his patience while addressing our questions and concerns.
We had 11 windows, custom sills and an entry door professionally installed by crew lead Nicholas B and crewman Gabe D. They did a wonderful job and made sure we were satisfied with the installation.
The windows are awesome, the sills look great and the entry door is super nice. We enjoyed the entire experience and highly recommend Nex-Gen Windows & Doors in Fort Collins!

We went through Costco for a whole new house of windows and a back door slider, and we're long overdue for all because of fear of cost. Mitchell handled consultation and immediately understood our needs and put our fears to rest. The install team of Nick and Gabe was absolutely stellar! They were fast, professional, and detail oriented to a level which pleased even my OCD construction management husband. Noah as Manager was also a complete Rockstar. Bonus points to all involved!