Best Window Companies in Fort Collins

Expert recommended Top 3 Window Companies in Fort Collins, Colorado. All of our window companies face a rigorous 50-Point Inspection, which includes customer reviews, history, complaints, ratings, satisfaction, trust, cost and general excellence. You deserve only the best!


5832 South College Avenue, Fort Collins, CO 80525 Directions

Since 1991

Renewal by Andersan is one of the chain businesses in the US. The window company has over 110 years of quality, innovation & craftsmanship. They customize and install lovely, energy-efficient composite windows for optimum efficiency. It offers the replacement of windows and doors that cover everything. Their certified master installers have experience working in homes of all shapes, sizes, and styles. They get the job done right, and their installations are guaranteed for life. They use Prescription Glass Technology to assess your windows' situation and effectiveness with a 17-point window inspection. Free estimates available.

Patio Doors, Casement, Specialty, Bay and Bow Windows, French Hinged, Porch Enclosures, Double-Hung, Awning, Installation, Replacement, Steel and Fiberglass, Picture, Gliding Sliding & Entry

License #4848409


Mon - Thu 8:00 am - 7:00 pm
Fri 8:00 am - 5:00 pm
Sat10:00 am - 1:00 pm
Sun Closed

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1206 Silk Oak Court, Fort Collins, CO 80525 Directions

Since 2007

3 Bidz Windows and Siding has become well known for saving customers 30-50% on window replacement and new window projects compared to most of their competitors. Their no commission sales force eliminates the high-pressure sales culture that other Fort Collins window replacement companies are known for. They always promise 3 Bidz on your windows, siding, and patio door projects: good, better, and best. They provide you offers on three distinct alternatives at three different rates for your replacement windows. They offer high-quality products at a competitive price. It serves residential customers in all of Larimer, Weld, and Boulder countries. They pride themselves on finding the best windows on the market. They serve all of Northern Colorado and Southern Wyoming. 3 Bidz Windows & Patio Doors serves in Loveland, Greeley, Windsor, Boulder, Longmont & Berthoud. They offer installation, repair, and replacement services for all of your patio doors and windows.

Steel and Fiberglass, Awning, Picture, Entry, Gliding Sliding, Casement, Replacement, French Hinged, Patio Doors, Bay and Bow Windows, Specialty, Double-Hung & Installation

[email protected]


Mon - Fri 8:00 am - 5:00 pm
Sat & Sun Closed

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5748 South College Avenue, Unit B, Fort Collins, CO 80525 Directions

Since 2012

Lomax Window & Door Co offers one of the most reliable windows and limited door replacement warranties you'll ever find. They carry only the most trusted product names in the industry: Andersen and Sierra Pacific. Donovan and Dawn Isaacs are the proud owners of Lomax Window & Door Co. Donovan began designing windows in Saint Cloud, MN, in the early '90s. His business experience is fantastic. Both have over a decade of experience and are installers who are certified and insured. They have a guarantee of 100 percent satisfaction. Max had already developed the company years ago and had a renowned reputation in the industry. Lomax grows by striving to be top of the range in customer satisfaction and delivering high-quality service.

Replacement, Installation, Sliding, Picture, Double Hung, Casements, Bow, Awning, Bay and Specialty Windows, Sliding Patio, French Hinged & Entry Doors

[email protected]


Mon - Fri 9:00 am - 5:00 pm
Sat 10:00 am - 2:00 pm
Sun By Appointment

TBR® Inspection Report