Brennan Heating & Cooling Inc
Brennan Heating & Cooling Inc is a HVAC provider serving Great Falls, MT. Rated 4.5★ with 17 Google reviews. See services, review signals, and request a quote.
HVACGreat Falls, MT
On this page
Company overview
- TradeHVAC
- Service areaGreat Falls, MT
- Google rating4.5★ (17 reviews)
- Phone(406) 452-1133
- Address815 21st St NW, Great Falls, MT 59404, USA
Photos
Photos from Brennan Heating & Cooling Inc, Cindy Rapstad, Steve C
What customers say
“I Called and spoke with Pat about a garage heater install. He made time for me just a few minutes, and he followed me to the garage. Pat only asked a few questions, like where did I want it, and any…”
“Came home after work to find out our AC had gone out. Called Brennan H/C and Billy went out of his way after hours to come over to try to get it working. It wasn't a quick easy, fix so they came out…”
“I had major water damage in the house with the existing furnace being submerged. Pat came right over to inspect the issue. He was so wonderful and very nice to work with! The next morning Chad was ov…”
“I had them install a air conditioning unit for our home and it only stays charged for one year. I’ve paid them $1000’s to recharge the unit and they dont stand behind any work. They say its normal to …”
Key highlights
Strengths
- Highly rated (4.5★ average)
Things to ask
- Confirm availability for your area and timeline
- Ask about warranty terms on parts and labor
- Request a written estimate before work begins
- Ask about payment plans or financing
Explore nearby research
Frequently Asked Questions
What services does Brennan Heating & Cooling Inc offer?
Brennan Heating & Cooling Inc provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Great Falls, MT.
What is Brennan Heating & Cooling Inc's rating?
Brennan Heating & Cooling Inc has a 4.5 out of 5 star rating based on 17 Google reviews.
Is this company licensed in Montana?
All listed providers have a verified Montana contractor license at time of publication. You can verify on the Montana Department of Labor & Industry — Independent Contractor / Construction Contractor Registration and Building Codes Bureau lookup at https://ebiz.mt.gov/POL/Default.aspx.
Does Brennan Heating & Cooling Inc offer emergency service?
Contact them directly to ask about emergency availability and after-hours service.
How do I request a quote?
Use the CTA below to submit your ZIP. You can message this company alongside two or three other local pros for easy comparison.
Licensing verified 2026-04-23. Reviews refreshed 2026-04-23.
Licensing data: Montana Department of Labor & Industry — Independent Contractor / Construction Contractor Registration and Building Codes Bureau · Company data: verified business records + Google Business profile
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