JDI Windows Reviews 2026
JDI Windows is a Littleton, Colorado based windows and door installation company that has been in business since 1997. The company services both the Denver and Boulder, Colorado metro markets. Generally, JDI receives excellent reviews from google and other online review sites. Scroll down to read our JDI Windows Reviews.
Our Verdict: I love the great reviews that JDI generates. However, I’m still not convinced on the Altius Windows. I’ve never heard of them and the list of features wasn’t all that impressive. Therefore, I’m saving my judgement on these guys for a bit.
(Always Get 2 to 3 Local Price Quotes - And My Personal Advice)
JDI Windows And Doors
JDI sells a line of windows and patio doors called the Altius. Truthfully, I have never heard of this brand. However, the description and features didn’t fill me with a whole lot of confidence.
JDI Windows Warranty
JDI Windows provides a 20 year labor and product warranty to their customers. The warranty is transferable and their Altius windows and doors come with a lifetime warranty that they are free from manufacturing defects.
Homeowner JDI Windows Reviews
Below are JDI Windows reviews, window and pricing comparisons to other replacement windows and doors.
Dane - Site Editor
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JDI Satisfied Customer
| Window Series | Installation Type | Homeowner Takeaway |
|---|---|---|
| Altius Premium Vinyl Window | Full Frame Installation | Very Happy With The Windows |
| JDI Windows | Full Frame Instead Of Retrofit | Would Use Again |
"Dane, we ended up going with JDI windows after comparing numerous local window company quote. Their pricing was competitive, and unlike the competitors, they did a full frame instead of a retrofit, which was the big sticking point for us. The crew did a great job, and we're very happy with the windows. They bought the Altius Premium vinyl window with a 0.23 U-Factor, which was one of the best we found. Would definitely use JDI on a future project."
Elton - Homeowner - from 2026
Editor's Advice:
Elton, great to hear. I will definitely post for other consumers to check out and better inform their decisions moving forward!
Dane — Website Editor - from 2026
⭐ PRO TIP REMINDER - always collect 2 to 3 project quotes, compare pricing, and save $$$! ⭐
JDI Windows Cost
| Window Series | Total Quote Installed | Editor Takeaway |
|---|---|---|
| Simonton Daylight Max | $10,000 | Need More Detail To Judge Fairness |
| Zen Windows / Soft-Lite | Recommended Additional Bid | Useful Comparison Option |
"Thanks Dane, here are the 3 quotes I have. The hand written one is from an older guy who founded JDI windows 30 years ago. He only carries the Simonton Daylight Max and won’t be making commission on the project. If you can read it. It’s about $10k. My biggest concern with the daylight max is how well sealed they are. I’d hope they are not drafty like our 30 year old, builder grade windows. But without physically seeing them I can’t know for sure."
Greg - Homeowner - from 2025
Editor's Advice:
Just seeing the bids doesn't really break anything down for me. What about getting a bid from these guys -- Zen Windows Denver - their reviews are great and they (should) sell Soft-Lite windows, which are very good quality. If you at least got the bid from the Zen, then I think I might have a better idea if the Daylight bid is fair.
Dane — Website Editor - from 2025
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About The Author
Dane is the site editor of Replacement Windows Reviews and has worked in the window and door industry for more than 40 years. He spent nearly two decades as a professional window installer before transitioning into consumer education and window review analysis.
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