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From $50
Up to $500
Closed until Sat, 5:00 AM
In the heart of Great Falls, we are Henry's Air Duct Service – your reliable HVAC experts. We pride ourselves on delivering exceptional air duct c…
The Best HVAC Company in Great Falls
Compare top-rated hvac providers in Great Falls. Profiles include verified reviews, service details, and direct contact options.
Service providers
From $50
Up to $500
Closed until Sat, 9:00 AM
In Great Falls, we're Cool Factory Heating and Cooling - your reliable HVAC experts. Home comfort is more than just a temperature; it's peace, saf…
Duct Cleaning Pros of Fairfax
Open today
From $50
Up to $500
Open 24/7
In Great Falls, we are Duct Cleaning Pros - your reliable partner in maintaining a cleaner, healthier home environment. Our focus is on HVAC servi…
HVAC pros near Great Falls
These companies are based in nearby cities and serve Great Falls.
From $50
Up to $500
Closed until Mon, 8:00 AM
In Black Eagle, we are Nelson Comfort Solutions - your reliable partner in home services. As HVAC experts, we specialize in a wide range of trades…
From $50
Up to $500
Closed until Mon, 8:00 AM
In the heart of Black Eagle, we are Northern Heating & Cooling - your dedicated HVAC specialists. With a focus on home comfort and efficiency, we …
From $50
Up to $500
Closed until Mon, 9:00 AM
At The Cool Guys Heating and Cooling in Vaughn, we specialize in HVAC services, focusing on providing exceptional solutions for your home's heatin…
From $50
Up to $500
Closed until Mon, 8:00 AM
In Dutton, we are Miller Mechanical LLC - your reliable partner for all HVAC services. We specialize in air conditioning contractor, furnace repai…
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Verified HVAC in Great Falls, MT
We show only active businesses that pass moderation. Results are specific to Great Falls and nearby service areas, and inactive profiles are removed to keep the list current.
Real reviews for hvac
Ratings and reviews come from customers who used the service. Compare hvac pros in Great Falls by experience, responsiveness, and value before you reach out.
Local-first search in Great Falls
Filter by neighborhood, check locations on the map, and find providers close to home or work in Great Falls. Listings are refreshed regularly — October 2026.
Great Falls area cities
The same listings in the closest cities — providers there often take jobs in Great Falls too. Mileage is the approximate distance from Great Falls.
- Black Eagle 1.5 mi
- Vaughn 13.2 mi
- Dutton 31.1 mi
Working with pros in Great Falls
Looking for hvac in Great Falls? This page lists verified local providers with ratings, reviews, and contact options. We show active businesses only — profiles are moderated and updated by owners.
Compare pros by experience, price range, and customer feedback. Many providers offer free estimates or same-day service for common requests. Use filters and the map to find someone close to your address.
Before you hire
- Read the most recent reviews for your specific type of job.
- Ask about licensing and insurance when required for this trade.
- Get a written estimate for work over a few hundred dollars.
- Confirm availability and any trip or emergency fees upfront.
Tips & guides from GigoPro
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The Definitive Guide to Hiring Home Service Pros
A dead water heater, a flickering light, a leaking dishwasher, a roof that needs replacing — every home eventually needs a professional, and the person you choose decides the pric…
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The Complete Guide to AC Repair Costs
"How much does AC repair cost?" is the most-asked question in home comfort — and the honest answer is genuinely complicated. The price of a repair depends on the type of system, t…
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HVAC feedback from Great Falls residents
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Derik Senger
Brennan H&C has always offered top notch service and installation! If we've ever had problems they are there promptly to service the equipment. They have always been professional! I would highly recommend this business!!
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Mike Powell
When it comes to HVAC, you get what you pay for. Brennan H&C have installed a new construction furnace, as well as AC units in the same new construction, and my existing house - all the way in Bozeman. Tried to find a qualified and competent company in Bozeman and Kalispell, and they seem to be partially trained and marginally competent compared to the school trained guys that this company has employed. Would I use them again - hell yes. If they were local here in Bozeman, I would have them do our semi-annual maintenance on my organization's building. Keep up the great work. (Oh, and they also put in a new furnace and A/C unit at my folks house in GF, as well as an overhead garage heater. Flawless). Do your homework and you will find out why they are so good. I'm not willing to pay for work that continually needs "maintenance" because the first 3 guys didn't know what they were doing (which has happened here in Bozeman).
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Michael Dressen
Great, super nice, rapid customer service from local family owned business. AC broke in the midst of a couple weeks of 90F+ heat (compressor went out on old R22 unit); they came out to bid the repair and had me back up and running with new AC unit installed the next day. Would call them again, no question.
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jpanter1
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 have all the fittings leak every year. Terrible buisness.
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Josie Gordon
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 over to install a new furnace and air conditioner and to repair the ducting that was damaged. They were absolutely fantastic! It was one of the best experiences considering the circumstances and they will always be my go to from this point on!
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Dan Ginnaty
I have used Brennan at both our store and at home to service our Heat and AC systems for over 25 years. Staff is knowledgeable and personable. They have serviced our roof system when it was -10. The tech was a Popsicle when done but he got our heat going! Fairly priced and reliable. I appreciate the good work.
