Adding Value to Your


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mountain windows


Mountain Windows is your local source for premium windows and doors from Marvin, Kolbe, Weather Shield, Milgard, and Alpen. We also offer premium window treatments from HunterDouglas. See our project gallery to view photos of the products available.


Call for a free quote


Schedule an appointment for a free no-obligation quote with one of our design consultants.



Mountain Windows is great! Lars Nelson, Keith & Eric are awesome! The new windows are fantastic, the house looks so much better, the guys did a great job, great attention to detail, fit & finish & they cleaned up after themselves very well! Highly recommend them for all of your window needs! Thanks for everything!
— Allison Jones
After a lot of shopping around...They did our entire house, 11 windows, 1 sliding patio door and 1 set of French doors. Lars and his crew were always professional, completed each project in a timely fashion and when challenges came up (with a 38 year old house there were a few) they were all over it with creative ideas or quick, permanent fixes. I would highly recommend Mountain Windows.
— David Jacobson, The Gunnisack (owner)
I have had really good experiences with Mountain Windows! I ordered new Hunter Douglas shades three times and received help with a problem on a recently installed Marvin Window. Lars is very prompt, helpful and professional and tries to give the most competitive quotes that he possibly can. I will use Mountain Windows again in the future and highly recommend them.
Lars and his team are wonderful and their products are extremely high-quality! Mountain Windows installed new windows and blinds for us and were great at getting us the right products, at the right price. Lars was great at showing us all our options and didn’t mind revising quotes when I changed my mind. The install was seamless and on time! I highly recommend Mountain Windows to anyone in the Gunnison area. And he hung my curtains and rods at no extra cost!
— Nicole Bichon



Whether your priority is energy efficiency, privacy, room darkening, ease of use, or child safety, you can count on the design team at Mountain Windows to help you choose the right product. You’ll find everything you need to transform your living space into your dream home. 

SEE our products & projects


About The Owner

Lars Nelson

Born and raised in the Gunnison Valley, Lars Nelson attended Western Colorado University and graduated with a business degree in marketing and management. After honing his carpentry skills for over a decade, he decided to pursue a more business-oriented career while still utilizing the hands-on skill set he built after college. The purchase of Mountain Windows in 2015 successfully combined his degree with his passion for carpentry.