Top 10 Ac Repair in Great Falls, MT

Updated March 2026 · Based on licensing, reviews & response time

Quick Answer

Top: Northern Heating & Cooling (4.9), Falls Mechanical Services LLC (4.7), Gill's Heating & Cooling, Inc. (5)

AC Repair in Great Falls, MT: Signs You Need Help Now

A struggling AC in Great Falls, MT's heat isn't just uncomfortable — it can become a health concern. If your unit is blowing warm air, cycling frequently, or making unusual noises, it's time to call a qualified technician before a small fix becomes a full replacement.

💡 Quick Tips:
  • Don't ignore refrigerant leaks — they get worse and more expensive over time
  • Ask if a repair or replacement makes more financial sense for units over 10 years old
  • Check if your home warranty covers the repair before paying out of pocket
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1

Northern Heating & Cooling

2501 17th St NE, Black Eagle, MT 59414, USA
★★★★½ 4.9 (196 reviews)
Licensed & InsuredTop Rated
Services: Ac Repair
2

Kindred Plumbing and Heating, Inc.

1019 8th Ave N, Great Falls, MT 59401, USA
★★★★½ 4.6 (284 reviews)
Licensed & InsuredTop Rated
Services: Ac Repair
3

Great Falls Heating & Air Conditioning

1306 15th St S, Great Falls, MT 59405, USA
★★★★★ 5 (1 reviews)
Licensed & InsuredTop Rated
Services: Ac Repair
4

Falls Mechanical Services LLC

600 2nd St S, Great Falls, MT 59405, USA
★★★★½ 4.7 (45 reviews)
Licensed & Insured
Services: Ac Repair
5

Gill's Heating & Cooling, Inc.

315 4th St S, Great Falls, MT 59405, USA
★★★★★ 5 (66 reviews)
Licensed & Insured
Services: Ac Repair
6

All About You Plumbing and Heating

3405 8th Ave N, Great Falls, MT 59401, USA
★★★★½ 4.6 (79 reviews)
Services: Ac Repair
7

AT Klemens

814 12th St N, Great Falls, MT 59401, USA
★★★★½ 4.6 (63 reviews)
Services: Ac Repair
8

Jerry's Radiator & AC Services

601 7th Ave S, Great Falls, MT 59405, USA
★★★★½ 4.5 (71 reviews)
Services: Ac Repair
9

B & B Heating & Air Conditioning

415 Vaughn Rd, Great Falls, MT 59404, USA
★★★★½ 4.5 (47 reviews)
Services: Ac Repair
10

Brennan Heating & Cooling Inc

815 21st St NW, Great Falls, MT 59404, USA
★★★★½ 4.5 (17 reviews)
Services: Ac Repair

How We Ranked These Great Falls Pros

Our rankings are based on a weighted evaluation of five key factors:

  1. Licensing & Insurance — All listed businesses hold active state licenses verified through official databases.
  2. Customer Reviews — We aggregate ratings from Google, Yelp, and the BBB, weighting recency and review volume.
  3. Response Time — Companies offering same-day or 24/7 emergency service score higher.
  4. Pricing Transparency — Businesses who offer flat-rate pricing or free estimates rank above those with opaque billing.
  5. Experience & Longevity — Years serving the Great Falls market and breadth of services factor into overall reliability.

Rankings are reviewed quarterly. Have a correction? Contact us.

Frequently Asked Questions

Best ac repair in Great Falls?

Top: Northern Heating & Cooling (4.9), Falls Mechanical Services LLC (4.7), Gill's Heating & Cooling, Inc. (5).