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Welcome to Big Sky ASHRAE Chapter 131

ASHRAE, founded in 1894, is a global fellowship dedicating to improving well-being through sustainable and ethical technology functional in today’s infrastructure. Our chapters across the country are focused on creating and implementing building systems, energy efficiency, indoor air quality, refrigeration and sustainability within the industry. We encourage research, continued education, standards development, and consistent publication among our members, with the goal of shaping a positive future and environment today.

Chapter 131 is made up of three sections–Billings, Great Falls, and Bozeman. We encourage networking with other industry professionals, as well as volunteering. Big Sky ASHRAE seeks and embraces collaborative efforts with organizations, agencies, and individuals sharing our commitment to sustainable built environments.


Big Sky ASHRAE depends on your help! Learn more about how to volunteer and make a difference in your local community.

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Our Sections

Billings more_vert
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Centrally located in south Montana, Billings is a hub of information, education, and industry development.

Bozeman more_vert
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Home to both colleges and resorts, Bozeman is at the developing forefront for new professionals in the industry.

Great Falls more_vert
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The third largest city in Montana, Great Falls is home for hundreds of ASHRAE members and their businesses.