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Delivering Value Since 1981

Flowmark was founded in 1981 to deliver high quality products and excellent customer service to the diverse industrial base in Billings, Montana and beyond. Today, we have warehouse and sales locations in Montana, Idaho and North Dakota that serve the Mountain West region.

We work hard to maintain the highest customer satisfaction in the business and sustain the ideals our company was founded on. We stock extensive inventory at each location to minimize lead times and offer custom manufacturing to meet the unique needs of the industries we support.

100Products in stock

10manufacturing vendors

24/7 customer support

FlowMark Locations

Flowmark can fully service Idaho, Montana, North Dakota, and Wyoming with all your fulfillment needs.

Engineered Solutions

We do more than just supply products for our customers. We collaborate with them to develop solutions that work today and scale for future needs. We’re partners with a wealth of knowledge of regulations and best practices across industries who can consult with you every step of the way to keep your operations running smoothly.

Customer Testimonials

“MSU Billings has been using replacement filters from Flowmark for over 20 years. TWith their help, we’ve achieved a ‘5-Star’ Energy Rating for air filtration standards. Their large warehouse and custom capabilities assures us of quick (often same day) delivery. Add in their excellent, friendly service, and that’s why I don’t order from anyone else! Highly recommended.”

Tim Gulbranson, Facility Services, Montana State University

Montana State University Billings

“I thoroughly enjoy working with the team at Flowmark and appreciate the hard work they put in to keep us stocked with a large variety of filters. They consistently have what we need and their ability to make filters in custom sizes is greatly appreciated. It’s always a pleasure doing business with Flowmark.”

Tyler Bispo, Engineering Supervisor, Billings Clinic

Billings Clinic

“I rely on the team at Flowmark for guidance and support with all my HVAC systems filtration needs. Flowmark routinely trains my teams on systems and best practices to improve our maintenance practices and outcomes. The quality and value Flowmark provides helps me manage budgets and keep our systems performing well!”

Thomas McKenna, Senior Facility Manager, Intermountain Healthcare

Intermountain Healthcare

“Flowmark is an excellent company to work with. They’re always helpful no matter what I need and always go above and beyond. The customer service Flowmark provides has been nothing short of amazing.”

Bill Hannigan, Mechanical Planner, ExxonMobil, Billings Refinery


Explore Our Products

Visit the pages below for details on the products and services we offer.