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Business Details
29 Years
experience
Award-Winning Window Installation in Denver, CO
Founded in 1997, JDI Windows has built a reputation as Denver's leader in window and door installation and replacement. With over 50 years of combined experience, our family-owned business prioritizes integrity, customer service, and craftsmanship. Our team of experts specializes in energy-efficient solutions tailored to Colorado's climate, offering products like Altius brand windows that meet Energy Star standards. Recognized with the Best of the Best award since 2015 and maintaining an A+ BBB rating, we focus on long-term home value and comfort.

Our process ensures seamless consultations, accurate quotes, and precise installations, backed by warranties and a commitment to transparency. Serving Denver and surrounding areas, we combine decades of expertise with innovative technology to deliver durable, cost-saving results for every client.
Services
Window Installation Vinyl Windows Patio Doors Window Replacement Energy-Efficient Windows Custom-Fit Installation Window Repair Door Installation
Details
  • Year established: 1997
Highlights and features
  • Over 25 years of experience in window installation and replacement
  • Energy-efficient window solutions that reduce utility bills
  • Award-winning customer service with BBB A+ rating
  • Free consultations and instant quotes with no hidden fees
  • Family-owned business with a commitment to community
Associations and certifications
  • BBB
  • Energy Star
  • WDMA
  • AAMA
  • NFRC
What people say
Award-winning service Professional installations Energy-efficient savings Community commitment Reliable support
Website
Services
Window Installation
JDI Windows specializes in precise window installation tailored to Colorado homes. Our certified technicians use advanced techniques and high-quality materials to ensure durability and energy efficiency. Clients benefit from enhanced home comfort, reduced energy costs, and increased property value through our meticulous installation process.
Vinyl Windows
Our vinyl windows offer durability, low maintenance, and superior insulation for Denver climates. Custom-designed to fit unique spaces, these windows resist warping and fading while improving energy efficiency. Homeowners enjoy long-term savings and enhanced curb appeal with our premium vinyl options.
Window Replacement
We handle complete window replacement projects from assessment to installation. Our team evaluates existing windows for damage or inefficiency, then recommends optimal replacements. Clients receive energy savings, improved aesthetics, and guaranteed satisfaction with our replacement expertise.
Energy-Efficient Windows
JDI Windows provides Energy Star-certified windows that reduce heating and cooling costs. These advanced products feature insulated frames and low-E glass to maximize thermal performance. Homeowners benefit from lower utility bills and environmentally friendly upgrades that enhance home comfort.
Patio Doors
Our patio door installations combine functionality with aesthetic appeal. Available in sliding and custom configurations, these doors improve energy efficiency while expanding natural light. Clients receive secure, durable solutions that enhance home value and outdoor accessibility.
People
Garrett Jones
Co-Owner
Co-owner of JDI Windows since 1997, Garrett focuses on business growth and customer satisfaction. With over 25 years in the industry, he ensures operational excellence and community engagement.
Rexford Hayden
Co-Owner
As co-owner, Rexford drives JDI Windows' strategic vision. With 15+ years of leadership, he prioritizes warm leads and long-term customer relationships, earning multiple industry awards for service excellence.
Wes Jones
Sales Veteran
A window industry veteran since the 1980s, Wes brings 30+ years of sales expertise. His family legacy includes 32 grandchildren, reflecting JDI's commitment to community values and personalized service.
Scott Killman
Project Manager
Retired Army Veteran Scott leads northern Colorado projects. With 20+ years in installations and AAMA certification, he combines military precision with construction expertise for seamless client experiences.
Joseph Giron
Installer
Colorado native Joe specializes in precise window replacements. With 15+ years of field experience, he emphasizes professionalism and listens closely to client needs for tailored home improvement solutions.
Questions
How long does window installation take?
Most installations complete in 1-3 days depending on project size. We provide exact timelines during consultations to minimize disruption to your schedule.
Can windows be replaced in winter?
Yes, we install year-round. Winter replacements immediately improve home warmth without compromising quality or efficiency in Colorado's climate.
Is the initial quote final?
Yes, quotes remain unchanged after measurements. You'll pay exactly what's stated, with no hidden fees or unexpected charges during the project.
How do I choose the right windows?
Our experts guide selections based on energy efficiency, durability, and aesthetics. We offer Altius brand windows with Energy Star certification for optimal performance in Colorado weather.
Do you offer warranties?
All products include manufacturer warranties plus our workmanship guarantee. We follow up post-installation to ensure complete satisfaction with every service.
Reviews (45)
Laura F.
Feb 25, 2022 Report
We recently completed our install and it was an amazing experience overall. They were right in line with some of the competitive quotes but we decided we liked to avoid the dog and pony show. We get it windows can vary in pricing, construction, color and materials. The buy now or lose out mentality the other companies present is just another eye rolling experience IMO. The installers were professional, polite and cleaned up after themselves every day. I would recommend JDI to anyone in the area.
Andrew C.
Jan 23, 2022 Report
We had a very positive overall experience with JDI Windows. The appointment management went smoothly (Lindsey was helpful), the sales process was professional and informative (thank you Rex), pricing was competitive, and the installation was impressive. Brent and his crew did an excellent job of replacing all of the windows in our house. They were efficient, courteous, and did a thorough job of cleaning up. We highly recommend JDI Windows!
Mike Linney
Jan 12, 2022 Report
Looks like a new house! Had all of our windows replaced and what a difference. After a few different quotes from window companies we selected JDI Amerimax windows. Rex was up front and transparent as to cost and time frame of installation due to inventory backups. Brent and his crew installed the windows and were very professional and on task and I couldn't be happier. Finding companies that show up and follow through as planned are hard to find these days. Can't say enough about this experience.just great!
Matthew Bowden
Sep 26, 2021 Report
JDI Windows is awesome. It's been a couple of years since we got our windows and we couldn't be happier with them. Here's why we love JDI Windows: 1) They were very professional throughout the whole process and communicated very well. 2) The price was far less than competing bids. 3) The quality of the windows and the quality of the install was unmatched. For real, our neighbors got windows installed at the same time as us and our windows look flawless.our neighbors paid a lot more and you can see several little flaws on the installation. 4) We felt like we only needed half of our windows done (just the south facing windows).

They didn't try to pressure us into doing the whole house like the competitors. 5) It's been two years and the windows still look brand new. I've recommended JDI Windows to a friend, and he was blown away by the price and the quality. I know he's referred a couple of others as well. Thanks Rex and Todd!
Harvest Community Church A.
Sep 23, 2021 Report
We were in the market to replace all of our windows in our house and JDIs quote was the best of the bunch. Their amerimax windows were the best bang for the buck. They came and installed all of our windows in less than 1 day. The installers were prompt, professional and did great work. The windows work great I highly recommend JDI for all your windows needs
Nan H.
Aug 10, 2021 Report
Great service and hopefully the product is as good as it looks installed. Todd and his crew were excellent. Showed up on time and finished quickly with high quality work.
Cathy M.
Jun 13, 2021 Report
These ppl installed 7, old metal windows this week Todd and his crew were competent and efficient I could never have wished for a better installation crew Five stars! The price was competitive as well My only criticism would be that all my windows are greatly smeared I am forced to hire a Window cleaner at $150.00 to clean them I'm disappointed Wes? What can you do to mitigate this? Thank you Cathy M Todd contacted me and said that he would reimburse me for the cleaning. A++++ company Best choice I could make Thank you!
Margaret Burns
Jun 07, 2021 Report
Loved working with JDI windows. From Rexford coming out to give a quote and explain the windows to Scott Killman and his team of Matt and Jonathan doing install. Install team were professional, on time and ready to work every day. Great attitudes, very professional and cleaned up after each day. Had a great experience and I love my new windows! Thanks guys, I'd definitely use you all over again.
Chris Bader
Jun 02, 2021 Report
From the estimate to the install, this company is 100% professional. Great pricing and the install was meticulous. I'd have no issues fully recommending or using this company again. Service:Window installation
Kaveh Arabfakhry
May 14, 2021 Report
JDI did an excellent job on my windows, I'd gotten pressured into a contract with Champion windows and Rex acted quickly to educated me about industry practices and ultimately helped me get much more for my money that I would have otherwise gotten. Rex's crew was great to work with and did a great job, everything went as expected, and I love my new windows. Would highly recommend JDI windows and have already recommended them to friends and family.
Chris K.
May 08, 2021 Report
Got an estimate from another company who quoted me $4k more than JDI did for 3 less windows, which INCLUDES a bay and garden window. While, yes, the other company's dog and pony show was much more impressive, I truly believe it was just that. a show. The reviews don't lie. JDI knows what they're doing, and the care they took to ensure I had a good experience was above and beyond. Wes did my estimate and was just a pleasure to work with in the beginning phase. Rex handled everything from the top, while Todd and his crew did the installation.

They were on it. I could get into the quality of the windows and do this-and-that comparisons, but at the end of the day, it's all about getting quality work for quality products at a quality price. I got all three with JDI. Five stars, all day. Thanks again, guys.
Rob B.
May 07, 2021 Report
The owner Rex and his installer Joe provided exceptional service and a really great quality product. I was able to get a very reasonable quote right there on the spot with the first visit. I did not feel pressured in anyway, and I am very pleased with my new windows. They are really beautiful windows and so easy to operate. I would highly recommend JDI to friends and family, in fact I already have to a couple people.
Derek B.
Apr 12, 2021 Report
I hired JDI to replace 9 windows in my house this past week. The work that Scott did was outstanding. He did a great job and was very efficient in his work. He arrived on site promptly at 8:30 when he said he would and knocked them out in a day and a half. We are very satisfied with the work that was done and recommend JDI!
Renata M.
Apr 05, 2021 Report
I had windows and a patio door replaced by JDI. Great company from start to finish, Mark came to do an estimate, good price, transparent, no hidden fees or 'extra' charges pop up later. I was not in the house to meet the crew, but was told they were nice, fast and respectful. My neighbor came home at the end of the day and stared at my house for a good minute or two, hahaha! I now proudly have the most beautiful windows in my neighborhood JDI is honest, transparent and respectful. I was very happy with this company.
D. B.
Apr 02, 2021 Report
JDI Windows did an excellent job for us. The price was extremely fair especially considering the high quality windows that they installed. I didn't think I would notice much, but the design and recommendation for these specific windows created so much more of an open atmosphere to the views surrounding our house. I really am even more pleased with the result than I would have imagined.
Sydnie Lemieux
Mar 22, 2021 Report
Wow, I was SO happy with JDI Windows! After getting multiple quotes and sitting through 2.5 + hour pitches from the big-name companies, my patience for window vendors was very little. JDI was a no BS kind of company (and I'm in sales so that says a lot;-)).They were way more affordable and the windows are beautiful. Joe installed 6 windows in one day, by himself! He was very professional, left our house super clean and very responsive. Highly recommend!
Jonathan Marcy
Mar 17, 2021 Report
Can't say enough good things about this entire company. From start to finish I felt at ease with the entire process and with everyone that I worked with. My wife and I almost went with a different company who actually gave us a lower quote for 19 windows and 2 sliding glass doors, but thankfully Rex stopped us from making a bad decision. He told me straight up he'd never install those windows from this other company in his home, and we'd regret buying them within 2 years.

In the end, we wound up paying a little bit more than we wanted to, but received a product that is MUCH higher quality, and it DRASTICALLY improved the look and comfort of our home. Rex went out of his way to establish a relationship with us first, and then make his recommendation from there. We love that the Amerimax windows are made right here in Colorado, and we felt good supporting a local company especially in tough times like this. Do yourself a favor, don't run around and get multiple quotes, just use Rex and his team and you'll be thrilled with the results.
Lenny M.
Mar 17, 2021 Report
Recently had all our windows replaced by JDI. Real happy with the results. Great price. Scheduled to our needs. Professional installation by Caliber Windows. Highly recommend.
Robin S.
Feb 20, 2021 Report
We loved the process and felt pricing was fair and honest compared to some of the "big name" companies with big markups where they can afford to throw in "free windows." Installation was quick and professional and we will be using them again!
Jessica Swanson
Feb 04, 2021 Report
From start to finish working with JDI has been easy. Rex was accommodating to our multiple changes. Delivery and installation was flawless. Todd and his son replaced 5 windows and two doors for us. They were courteous, clean, and did an amazing job. The craftsmanship is obvious. We'll def have them back to replace the other windows. Appreciated their transparency with pricing and would recommend them to anyone looking.
Dave H.
Oct 09, 2020 Report
Used Rex and his crew on a different home. Love that the windows are made at altitude in Colorado. His installation crew was professional, courteous and left the home like they found it. Nice to have a company I trust and will use every time needed.
Sarah G.
Jul 25, 2020 Report
Beautiful windows! The absolute best on the block! There is a visible difference. This company was great and easy to work with! We will never look elsewhere for our window needs!
Mark G.
Jun 17, 2020 Report
Not the cheapest, but their professionalism, work ethic, and knowledge of their trade are worth it - you get what you pay for. There are many 5 star reviews on here, and I could repeat their words, so cut to the chase, Ditto, and they deserve it. I suggest you get multiple quotes and have Rex come last, you'll definitely see why they are in a class by themselves. And then you get Joe, Mr. Installation, a one man crew that knows what he is doing, is great as what he does, and very thorough. Although we had no major problems (as I see on other reviews), any concern we did have was immediately rectified. Kudos and thank you
Chris C.
Apr 09, 2020 Report
JDI windows replaced all of the windows in my house and we're absolutely a top notch outstanding AAA Five Star company that I give my highest recommendation. From price, quality of windows, expert professional installers, clean up, to follow up - JDI Windows was a grand slam selection for me. I was very hesitant when I entered the replacement window search, but when I came across JDI Windows on YELP they had nothing but 5 Star Reviews.

Their pricing was really super competitive and JDI Windows performance far exceeded my expectations despite their excellent reputation. Brent and his team installed the windows professionally with superb craftsmanship and we absolutely love our Amerimax windows built right here in Colorado! Go no further in your searches if you need your windows replaced - you will be amazed.
Karl Romriell
Mar 07, 2020 Report
JDI was great! Rex was wonderful to come over and look at our windows and show us the options they had. The first 2 pictures are our old windows, they were metal and the seals had cracked and the trim was horrible. The last 2 are the finished product! Great windows they work well and it is extra quiet in our home! The window have helped with the warm weather and keeping our house cooler! I would highly recommend JDI for your windows! They are also manufactured here in Colorado and it's always great to work with the local companies.
Brian D.
Feb 06, 2020 Report
JDI replaced 22 windows and 1 patio door, and the installation was perfect, and they did it in 2 days on a 3 story house. Rex, the owner came out, was early, and wrote us up a hand written contract, with a price that was below what we had expected, and the windows installed about 5 weeks later. His crew, Brent and Garrett were excellent, super nice guys and professional, and cleaned up well when finished, and started at 8 AM sharp. The quality of the windows and installation was better than what we had expected. My wife and I highly recommend these guys.
Joe R.
Jan 13, 2020 Report
We were in the market for a full-house window replacement job, as the original wood-framed windows were disintegrating and had to go. I sought a quote from another company before finding JDI's profile on Yelp and another site--suffice to say the great reviews spoke for themselves and I set up a consult/quote with JDI. After meeting with Rex, I could tell he knew the product he was selling inside and out, and with his company's very long history of installing the Amerimax window plus the very transparent and competitive pricing, I was sold. Todd and son did a masterful job on the window installation (17 total), both the inside and outside finishing touches were flawless. I am very satisfied and would highly recommend JDI Windows to anyone in need of window replacement!
Todd S.
Aug 04, 2019 Report
Had them install 9 windows and a door at our house. Rex was personable and thorough. Really detailed the process and pricing. Vinny our installer was awesome. Took pride in the install and made sure everything was done perfect. The windows have already made a huge difference in the temperature of our house! The old ones were thin and had many issues as you can see in the attached below before and after photos. I would highly recommend JDI!
Elizabeth M.
Jul 10, 2019 Report
JDI was great to work with and was very professional. We had a patio door replaced with enclosed blinds. Rex was very professional on the phone to discuss options, cost, and getting me a written estimate, Vinny was great on the initial measuring appointment and install, and the follow up process was great. I highly recommend working with JDI if you have any window projects on your home. Thanks Yelpers for giving great reviews for confirming this was a great company to work with.
Eric H.
May 24, 2019 Report
We just got new replacement windows from JDI Windows. It was painless, easy and Rex offered a very good deal. The installation crew, especially Vince, were professional, on-time and provided a quality install. I highly recommend them. https://jdiwindows.com/
Lynn L.
Nov 26, 2018 Report
We had all of our windows replaced by JDI Windows and we are very pleased with the finished product. Rex came out for the no nonsense bid and did not waste our time with a two hour presentation. He is straight to the point no sales pitch. He will disclose the inventory cost, labor, cost of materials and gross profit of each job. I appreciate the visibility and straight forward approach to bidding for the job. JDI sales Amerimax window which is a top rated window. I highly recommend and Rex made the whole process seamless.
Cam C.
Sep 20, 2018 Report
Can't say enough about the character of JDI and the Owner Rex. Rex was extremely helpful on a full home window replacement that my mother in law was doing on her home. I will definitely be using Rex and JDI for future window replacements and would recommend them to anyone else looking for a reliable contractor.
Ryan P.
May 10, 2018 Report
I recently requested a quote from Rexford and JDI Windows. Rex was very responsive, got back to me quickly and I had a quote in hand in just a few days. The quote was very competitive for a very nice quality vinyl window made in Ft Collins. I ended up going with a company my roofer introduced me to, but it wasn't an easy decision. If I had a question, Rex was standing by - and his follow-up skills are superb. I know you won't be disappointed with the professionalism of JDI and their communication and follow-through.
Patrycja Carter
May 02, 2018 Report
My first major home improvement was completed by JDI about a year and a half ago when I decided to upgrade my old aluminum windows, a total of 9 windows and a sliding door. Let me tell you: the crew rocked! Everything was completed in one day and the guys were so neat, they vacuumed and wiped and cleaned up after themselves as they progressed with the installation. From start to finish, JDI made my experience easy and hassle-free.

No miscommunications, no surprise fees, no hidden anything. It was a straight-forward estimate with thorough explanation of the entire process and product description, followed by delivery of what I've been promised. I also got a great financing deal through them. I'm very happy with the service and the installation. I love, LOVE my new windows!
Gregg P.
Apr 27, 2018 Report
JDI replaced two sliding glass doors for us a week ago with Amerimax glass doors. We're extremely happy with our experience with JDI from the initial quote all the way through installation! When we originally called JDI we thought we needed several windows replaced along with the doors. Rex came to our home to provide an estimate and after looking at the windows, he told us he didn't think they needed to be replaced at all.

He quickly spotted the issue that we needed to resolve instead which saved us thousands of dollars! Rex's honesty and integrity were integral in our decision to choose JDI to replace the sliding glass doors. He and the installer, Brent, were a breath of fresh air during the entire process! When we do end up needing window replacement, we won't hesitate to call Rex and JDI to take care of it for us. We definitely recommend using them for any window or door replacement need you have!
Valeria K.
Dec 04, 2017 Report
We loved working with Rex and his team! They are so professional, responsive and handy when it comes to windows installation. We would highly recommend their service to anyone looking for a knowledgeable team that can provide guidance on the best windows in Colorado. The value was also wicked good, thanks Rex and JDI Windows!
Chuck Cordova
Oct 25, 2017 Report
I had about 5 different bids on replacing all the windows on our house. Rex came in and not only had an extremely fair bid but gave us window ideas we had not even considered. We went with his company and his design ideas and couldn't be more pleased! Very professional, on time, and on budget, no surprises. Highly Recommended!!
Sherry D.
Oct 02, 2017 Report
This vendor JDI Windows is amazing. The customer service is the best. They are extremely efficient and prices were way better than anyone else. We almost went with Home Depot, or Anderson thankful we chose JDI instead. I couldn't believe how well they run their business. When they come to your house to install they are polite, and install with perfection working as a team. Husband and I are very satisfied. Our friends need windows and we are recommending JDI to them or anyone that needs windows. The quality of the windows Amerimax are worth every dime. They are beautiful! Thank you Rex and Darren!
Jessica Mankins Looney
Sep 14, 2017 Report
Very impressed with the crew that came and installed our new windows this week!! They did an amazing job and were very professional. The windows look amazing and I can already tell the difference in the temperature in our home. Would absolutely recommend!!
Katie Welfare
Jun 19, 2017 Report
JDI Windows was fantastic to work with. After interviewing multiple window companies, we chose to use JDI based on their professionalism, timeliness and reviews. They only did four windows for us but worked in a tight space and were in and out within four hours! They required no clean up behind them or touch up - they were efficient and pleasant to have in my home. I appreciated the professionalism and customer service from the day we reached out through to completion and will definitely use JDI again for future window projects!
Randy D.
May 16, 2017 Report
I sent in an email request for a quote. JDI replied within a day and set up an appointment. The person who gave us the estimate was very practical and didn't try to upsell us. He did some rough measurements and gave us a clear price within an hour. The installation went smoothly. We had one minor problem that JDI resolved within a couple of days. No complaints, and the straightforward pricing estimate was much appreciated.
Shane O'Neill
Mar 24, 2017 Report
I had a great experience working with Rex. I am in the process of selling my home. The house backs up to a busy street. There is a lot of background noise. Rex gave me a few good solutions for abating the noise from passing traffic. It is nice to work with someone who has the customers best interest at heart. Some of the solutions which he provided would not benefit him financially. In my opinion, this is the type of company ( with honesty and integrity) that will get my business each and every time.
Chris S.
Jul 05, 2016 Report
Great company! Great experience from the initial phone call, to meeting with Rex for a quote, and the removal of the last spec of dirt removed by Darrin and his crew, and they responded promptly to take care of a small issue with trim. The windows make a HUGE difference with the temperature control and sound in our house. Our neighbor down the street saw their work and she now has a full window replacement at her house using JDI. Highly recommended!
Kristin B.
Jan 20, 2016 Report
Absolutely great experience with JDI Windows! From the first meeting with Rex to the final installation, I am so impressed. I had other quotes that were up to 75% higher and without the customer service and ease of working with a truly local company. I have a 130 year old house in the Highlands and the difference is amazing - not to mention what JDI recommended looks perfect with the aesthetic of my old home.

The windows are gorgeous and a lot less expensive than I thought they were going to be. The installation was super fast and efficient and Brent and Todd have been fantastic to work with too. I 100% recommend JDI!
Tim Sinks
Nov 06, 2014 Report
I live in a 40 year old house and was in need of new windows. I figured the process would be painful, having to get estimates, take time off work, big cost, etc. I received 4 estimates and what I really liked about JDI was how Rex was very upfront about the process, window quality, and pricing. One thing that drive me nuts about a few of the previous estimates I received was how they tried to tell me they would give me a discount if I bought so many windows or signed today type of thing.

That is not what happened with JDI. The pricing was reasonable and honest and I didn't feel like I was talking to a used window salesman. Darren and his crew were excellent!! They did a great job, were courteous and pleasant to have in my home and they even cleaned up when they were all done. Thanks JDI!!!