Named.

“Who is the best HVAC company in Great Falls, Montana?”

Asked October 15, 2026 with Claude and live web search, the way a customer asks. It read 9 pages and named 10 businesses.

Named, in order

  1. 1MacDonald Heating & Cooling
  2. 2Gill's Heating, Cooling & Plumbing
  3. 3Falls Mechanical Services
  4. 4B & B Heating & Air Conditioning
  5. 5Northern Heating & Cooling
  6. 6Talon Plumbing Heating & Water
  7. 7Dave's Sheet Metal
  8. 8AT Klemens
  9. 9Kindred
  10. 10Brennan Heating & Cooling

Run a HVAC company in Great Falls?

Check where you land, or see exactly why these names come up first.

Check my businessThe full report

What it read

  • angi.comTop 10 Best Heating and air conditioning pros in Great Falls, MT
  • yelp.comTHE BEST 10 Heating & Air Conditioning/HVAC in GREAT FALLS, MT - Updated 2026 - Verified Listings Only - Hours - Yelp
  • yelp.comTOP 10 BEST Hvac Installation in Great Falls, MT - Updated 2026 - Quality & Affordability - Yelp
  • reviews.birdeye.comTop Heating & Air Conditioning/HVAC Companies in Great Falls, MT
  • yelp.comTOP 10 BEST Heating Air Conditioning in Great Falls, MT - Updated 2026 - Quality & Affordability - Yelp
  • yelp.comTOP 10 BEST Air Conditioner Repair in Great Falls, MT - Updated 2025 - Yelp
  • chamberofcommerce.comBest HVAC Contractor in Great Falls, MT
  • industryoversight.comTrusted HVAC Contractors in Great Falls, MT - Industry Oversight
  • profindr.comTop Rated HVAC Contractors in Great Falls, MT (2026 Rankings) — ProFindr

The full answer

There's no single "best" HVAC company in Great Falls. It depends on what you need and which reviews you trust. A few names come up again and again with strong ratings on the review sites I checked:

Highly rated

  • MacDonald Heating & Cooling (156 Wilson Butte Rd): 5.0 stars from 46 reviews on Birdeye. It had the highest rating of any company there with a good number of reviews.
  • Gill's Heating, Cooling & Plumbing (315 4th St S): 4.9 stars from 56 reviews on Birdeye and 5.0 on Yelp. One reviewer said a technician showed up the same afternoon after their furnace quit.
  • Falls Mechanical Services (600 2nd St S): 4.7 stars from 41 reviews on Birdeye. One customer said the owner came out on a weekend to fix their boiler when it was below zero. Its Yelp rating is lower (3.0), though that's from only 4 reviews.
  • B & B Heating & Air Conditioning (415 Vaughn Rd): 4.6 stars from 49 reviews on Birdeye.

Also worth a look

  • Northern Heating & Cooling (Black Eagle) has a perfect Yelp score, but from only 1–2 reviews.
  • Talon Plumbing Heating & Water and Dave's Sheet Metal both rate well on Birdeye, but with fewer reviews.

Mixed reviews: AT Klemens, Kindred and Brennan Heating & Cooling have lower Yelp ratings (about 2.4–3.4), but those come from only a handful of reviews.

Tips for choosing:

  1. Get two or three quotes, especially if you're replacing a system.
  2. Ask whether they offer emergency service on nights and weekends, which matters a lot in Montana winters.
  3. Make sure they're licensed and insured, and ask what warranty they give on parts and labor.
  4. Check the latest Google reviews, since ratings change over time.

If you'd like a single name to start with, MacDonald and Gill's have the best mix of high ratings and many reviews.

This page reports what Claude said. It is not our ranking or an endorsement. Nobody paid to be named, and nobody can.