Custom Montana Made
Windows and Doors

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custom vinyl Windows & Doors

Chinook Billings

Chinook Billings is proud to be your direct source for "Montana Made" Premium Grade Vinyl Windows. Chinook Windows, established in Great Falls, Montana in 1996, are proven to withstand Montana's harshest climate. We offer the strongest frames in the industry.  Our windows exceed EnergyStar certification criteria, and qualify for the Montana Energy Conservation and Tax Credit, saving you money.

We offer a wide variety of windows and doors:

  • Single and Double Sliding Windows
  • Single and Double Hung Windows
  • Casement and Awning Crank Windows
  • Picture, Arch, Trapezoids and Other Specialty Products Available
  • Sliding Patio Doors
  • Bays, Bows and Garden Windows
We adapt and help our customers


We offer a variety of operating styles and materials to meet the needs of our customers. The ability to adapt and help our customers through the design process allows our customers to get exactly what they want from the manufacturer.

"The service and reliability of this company was outstanding. They installed our windows on time and on budget. We could not be happy with Chinook Billings."

T.M. ★★★★★

"Jason and his crew were a pleasure to work with! They showed kindness and respect while in our home and offer a quality product and work! We will definitely be using Chinook Billings in the near future. "

K.S. ★★★★★

"I am beyond happy with what you have done and how I was treated. Please accept the $100 "tip" even tho you took it "off" the bill. I look forward to working with you again next Spring. I am truly grateful!"

G.S. ★★★★★

"I recently have had the extreme pleasure of working with Chinook Billings and the Chinook Windows that they manufacture right here in Montana. Jason and Michelle were easy to deal with and they are excellent communicators. Their windows are affordable yet built with great attention to detail, plus the fact that they are Montana Made windows made this an easy decision for me! I will use them again on my next project. I highly recommend Chinook Billings!"

L.W. ★★★★★

" They made us a custom size window and good price. Quick service. Cut out old window, took it away, installed new window and cleaned up when done. We love the window and will be purchasing more in the future. "

M.C.H. ★★★★★

"Shout out to these guys! They showed up the day I called for a quote and emailed me the quote that afternoon!! No pressure from them. Listened to what I WANTED - gave me all the tax rebate info and warranty information without me asking for it. They showed up on the day promised for installation, completed the work and wasn't a speck of dust left in the house - I think they left the house cleaner than it was, everything cleaned p outside too. Everything was installed as promised and looks beautiful - I couldn't be happier!"

A.W. ★★★★★

Who We Are

Chinook Windows is Montana's only vinyl window manufacturer, built specifically for Montana's harshest climate. Founded in Great Falls, MT in 1996, Chinook Windows has established an excellent reputation with home-owners, lumber yards and contractors across north-central Montana. We are proud to announce we have recently established Chinook Billings, an independent distributor of Chinook Windows.

Chinook Windows are built from the strongest vinyl extrusions and use Low-E Glass, argon gas and energy efficient products in our insulated thermos. Our products meet Energy Star criteria and are NFRC approved and qualify for the Energy Conservation Installation Credit.

We offer a wide variety of windows and each Chinook Window is custom built to your size specifications, new construction or retrofit. Call for an estimate! Each window is custom made to your exact size specification. We will deliver directly to your local job site, ask for details.

Locally OWned

About Us

Now Located in Billing, Montana. Chinook Billings is locally owned and operated by Jason and Michelle Carnahan. Chinook Billings is proud to provide high quality windows and solid wood exterior doors to our friends, family and neighbors in our local community.


Planning Your Project

When you are getting ready to start your next project come and see us first.  Here at Chinook Billings we custom build all of our products to fit your specific needs and tastes.