The best replacement windows in the Fort Collins area

Choosing Lomax Window & Door Co for your window replacement is something that should bring a sense of comfort. As neighbors in the community, it's our primary mission to take care of the people around us. We assure you that from beginning to end, our professional installers will respect and care for you and your home throughout the entire process.

Our latest discounts:

Get 5% off any 5+ Windows & Doors!

Get 10% off any 10+ Windows & Doors!

Get 15% off any 15+ Windows & Doors!

Get 20% off any 20+ Windows & Doors!

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Increased Energy Efficiency

Discover the different glass options and styles available to maximize energy savings during your consultation with our experts at Lomax Window & Door Co.

Enhanced Curb Appeal

Replacing your old windows with new ones is an effective way to boost your home's value. Our skilled technicians take precise measurements to ensure a flawless installation that will enhance both the interior and exterior of your home.

Easy Maintenance

Find a variety of windows featuring tilt-in sashes and other standard features that make them easy to clean without the need for special tools

Limited Lifetime Warranty

All of our windows feature a manufacturer warranty that protects your investment.

Excellent Customer Service

As neighbors in the community, we're able to provide unmatched levels of customer service.

Satisfaction Guaranteed

It's our main priority to make sure that all of our customers are completely satisfied with their purchase.

Popular styles

Single-hung Windows

Sliding Windows

Pictures Windows

Double-hung Windows

Bay Windows

Bow Windows

Quincy L

"We got Anlin windows and a patio door through Lomax. We are very happy with the product and the installers did a great job and wore their masks the whole time; it was a comfort! Will definitely reach out again for phase 2."

Allison H

"The customer service was amazing, and I got an appointment in a reasonable time. When the installation guy came out he was friendly and did a great job, he worked fast, and was able to problem solve some tricky issues, and left my house clean and the windows are beautiful. I would recommend them to anyone!"

Cindy H

"Loved the quality of the Lomax windows as well as the super-competent installers. Donavan the owner certainly knows his stuff as he has been in the window industry for decades. His dedicated staff were professional and a pleasure to work with."