HEATING & COOLING DONE RIGHT.

FAMILY OWNED • VETERAN OPERATED • FLATHEAD VALLEY SINCE 2014

From freezing Montana winters to warm summer days, Great Northern Heating & Air provides dependable heating and cooling solutions for homes and businesses throughout Northwest Montana.

Family-owned, veteran-operated, and committed to getting the job done right.

BOOK SERVICECALL 406-471-7560

Services

Comfort for Montana Homes. Done Right.

From a furnace that quits on a January morning to adding efficient cooling to a home without ductwork, Great Northern Heating & Air provides straightforward HVAC solutions built for life in the Flathead Valley.

BOOK SERVICECALL 406-471-7560

Heating

Keep your home warm when it matters most with professional furnace installation, replacement, maintenance, and repair services.

Air Conditioning

Stay comfortable through Montana’s warmer months with efficient cooling systems and dependable AC service.

Heat Pumps & Mini-Splits

Discover flexible, energy-efficient heating and cooling solutions, including cold-climate heat pumps designed for Montana’s changing seasons.

Boilers & Radiant Heating

Enjoy consistent, comfortable warmth with professionally installed and maintained boiler and radiant heating systems.

Indoor Air Quality

Breathe easier year-round with whole-home filtration, humidity control, and ventilation solutions designed for Montana’s dry winters, wildfire smoke, and changing seasons.

Maintenance & Repairs

Protect your investment and keep your equipment operating reliably with preventative maintenance, professional diagnostics, and repairs.

TRUSTED THROUGHOUT THE FLATHEAD VALLEY

“

I've had a fantastic mini-split installed by this company for about 4-5 years now, no issues. The past week or so the AC has quit working and I finally called in, during the evening, expecting to leave a voicemail... I didnt have to! Isaiah answered my call, close to 9pm, and was exceptionally kind, patient, knowledgeable and truly went above and beyond! As of 10pm, my unit is operational again and cooling my house off when I need it most.
Thank you Isaiah at Great Northern Heating & Air!

Val
“

Tom was great. He diagnosed and solved our heat recovery ventilator problem quickly and efficiently. Very friendly and professional.
A couple of weeks later we had a problem with our A/C system. Tom diagnosed the problem (faulty capacitor, contactor, fuse) and performed necessary repairs. He had all replacement parts on his truck, and was able to complete the repairs quickly. He was very capable and friendly. GNH&A gets my highest recommendation.

Greg Olson
“

Great Northern Heating & Air installed central AC for us as well as updated our furnace. Their team is very professional and polite and they provided exceptional service, would highly recommend.

Kathryn
“

Great company! I have used them multiple times and they are super responsive and great to work with. They will continue to be my go to in the future when I need HVAC services.

Chris Strand
“

The GNHA team is terrific. The quote was very fair, they are extremely professional and completed the work well, on time and just as promised. I installed AC for the full house. They've helped me with other stuff related to HVAC before as well. Would highly recommend.

Christine Moss

Local People. Honest Work. Lasting Comfort.

At Great Northern Heating & Air, we believe good service is about more than fixing what’s broken. It’s about showing up when we say we will, explaining your options clearly, and taking pride in the work we leave behind.

Since 2014, we’ve helped families and businesses throughout the Flathead Valley stay comfortable through every Montana season. Whether you’re building a new home, upgrading an outdated system, or dealing with an unexpected repair, our team takes the time to understand your needs and recommend solutions that make sense.

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“The GNHA team did a fantastic job installing the new mini split HVAC system. I highly recommend them for your job too!”

Steve Dooling
ABOUT GREAT NORTHERN HEATING & AIR

Rooted in the Flathead Valley.

Great Northern Heating & Air started in 2014 as a one-person operation with a commitment to honest service and quality workmanship. Today, we’ve grown into a team of experienced HVAC professionals serving homes and businesses throughout Northwest Montana.

As a family-owned, veteran-operated company, we’re proud to continue building on that foundation with the same straightforward approach: take care of our customers, take pride in our work, and do things the right way.