ACT Heating and Cooling Logo

  • Your Comfort, Our Commitment Since 1992

    Trusted by over 25,000 homeowners in Billings for expert heating, cooling, and year-round care.

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  • Worry-Free Comfort Starts Here

    Join our Membership Program for free tune-ups, priority service, and exclusive savings, all for less than a dollar a day.

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  • When It Breaks, We’re There

    Emergency service and expert repairs, so you’re never left in the cold (or the heat).

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Our Services
Repairs Air Conditioning
Maintenance Furnace
Maintenance Membership

Why Choose ACT?

Over 30 years of trusted service and over 25,000 satisfied customers.

We don’t just service furnaces and air conditioners. We take the time to understand what’s important to you, providing honest guidance and solutions that fit your home, your needs, and your budget.

Serving the Billings area for over 30 years

Personal, professional, and expert customer service

High-quality products from trusted brands

Only experienced and qualified technicians

Expert solutions for your home, needs, and budget

Services That Keep You Comfortable

Expert repairs and reliable maintenance, we’ve got you covered.

Our Services  ⟩

Shop Filters & Humidifier Pads Online

Order online with ease and have them shipped straight to your door.

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Reviews

  • Keep doing the awesome service you provide! We have owned a home for over 30 years and have never been treated better than by ACT for any service need. I am so grateful that we called you! I will pass on my excellent experience with your company! You could give lessons in customer service to many other companies!

    Jack & Sheryl Winkle

  • I can’t imagine how ACT could improve further… I couldn’t be happier with the whole entire process. From start to finish- an absolute pleasure working with everyone involved will recommend and use ACT in the future!

    Scott Field

  • You were all just great! Brandon was very informative and honest about our particular heating & cooling issues. Drew and the rest of the crew were hard working and very courteous. Thank you so much! P.S. Brandon even helped us out with coolant until our repairs could be made. You seem to have some wonderful employees!

    Terry & Kim McLaverty

  • Keep up the great work and service. The office sales, and installer personnel for this job are true professionals. I’m glad I chose ACT and will continue to rely on you for my heating and cooling needs. Thank you all.

    Paul & Nancy Bousquet

  • Always love dealing with you guys for the last 15 years doesn’t matter who, service is always good!!

    Todd & Alex McCready

  • ACT is easily the best service installation company I’ve over worked with. Professional courteous and outstanding. It was a pleasure to work with the professional of ACT.

    Michael Garcia

  • From Pat Casey showing us what is available and educating us on products, to installation. To duct clean out. It was a 1st class operation. We Thank you!

    Dennis Goodheart

  • Brandon was extremely helpful in helping us selecting a furnace replacement and in the prompt repair of our air conditioner it its 7th year of service. Your 10 years warranty on both our air conditioner and furnace is wonderful coverage. Your installers were outstanding and even detected and fixed a gas leak in the line to our water heater.

    Ron & Carol Hildebrand

  • This was one of the most professional companies we have ever dealt with, outstanding in every aspect of the work we had done. Will recommend your company to anyone looking for having there heating and cooling system replaced or upgraded. Awesome Job!

    Douglas & Alice Stenglein

  • Your crew was efficient and courteous and answered all my questions. You have an amazing work force top to bottom. My new furnace works better than I had expected. My wife mentioned the first night that our house is finally a consistent temperature upstairs and down.

    Scott & Jenny Lueck