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.

Overall Rating: JDI Windows gets a 4.7 out of 5 stars based on 2 consumer reviews below.

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 3 to 4 Local Price Quotes - And My Personal Advice)

Written by: Dane, Site Editor
Experience: 40+ years in window installation and replacement
Editorial Review: Replacement Windows Reviews Team
Original Publish Date - April 29, 2025

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JDI Windows And Doors

JDI sells a line of windows and patio doors called 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.

JDI Windows Reviews

Homeowner JDI Windows Reviews

Below are JDI Windows reviews, window and pricing comparisons to other replacement windows and doors.

Dane - Site Editor

JDI Windows Cost

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

[Site Editor's Answer]

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 - Site 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.