Northern Heating & Cooling
Verified Pro
13 years online4.9(196)
HVAC Installation & Repair in Great Falls, MT
Compare 26 hvac installation & repair contractors near you in Great Falls and surrounding area with an average rating of 4.6/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated March 24, 2026
Most pros respond within 2–24 hours
Verified Pro Installers
Other Businesses in This Area
Advanced Air L.L.C
5.0Gill's Heating & Cooling, Inc.
5.04 mo onlineGreat Falls Heating & Air Conditioning
5.0Trane - Heating & Cooling Services
5.032½+ years onlineFischer HVAC, Inc.
4.9Nelson Comfort Solutions
4.9PipeDown Plumbing, LLC
4.9HVAC & Refrigeration
4.8The Water Boyz LLC
4.81½+ years onlineDave's Sheet Metal Heating & Cooling
4.7Falls Mechanical Services LLC
4.713+ years onlineAT Klemens
4.6~25 years onlineFairway Comfort Systems
4.64 mo onlineKindred Plumbing and Heating, Inc.
4.6~5 years onlineAll About You Plumbing and Heating
4.5~6 years onlineB & B Heating & Air Conditioning
4.5Best Value Plumbing & Rooter
4.5~2 years onlineBrennan Heating & Cooling Inc
4.5~21 years onlineJerry's Radiator & AC Services
4.4Air Tech Heating and Cooling
4.3911 Plumbing and Heating
4.011+ years onlineHVAC Installation & Repair in Nearby MT Cities
Other Services in Great Falls
Access Control & Intercom(41)Alarm System Installation(23)Appliance Installation(22)Artificial Turf Installation(26)Automotive Installs(6)Concrete & Paving(22)Deck & Patio Building(24)Electrical Services(25)EV Charger Installation(6)Fencing & Gate Installation(24)Fire Protection & Sprinklers(33)Garage Door Installation(15)
About HVAC Installation & Repair in Great Falls
HVAC work covers heating, ventilation, and air conditioning — from furnace and AC replacement to ductwork modification and zoning systems. Regular maintenance extends equipment life, but most units need replacement every 15–20 years.
Typical costs: A new central AC unit installed runs $3,500–$7,500. Furnace replacement is similar. A complete HVAC system (furnace + AC + ductwork) can be $10,000–$20,000+ depending on home size and equipment efficiency rating.
Common projects include:
- Central AC replacement
- Furnace or boiler replacement
- Ductwork installation or modification
- Mini-split / ductless system installation
- Thermostat upgrade and zoning
HVAC replacements and new installations typically require mechanical permits. Equipment changes that affect gas lines or electrical circuits may need additional permits.
Frequently Asked Questions
- How much does hvac installation & repair cost in Great Falls?
- Costs depend heavily on system type and home size. A straightforward AC swap on an existing system runs $3,500–$7,500. Switching from forced air to a mini-split system, or adding ductwork, increases cost significantly. Always get 2–3 quotes.
- How do I find a reliable hvac installation & repair contractor in Great Falls?
- HVAC contractors should be licensed and insured. Ask about their experience with your specific system type (forced air, boiler, heat pump, mini-split). Get load calculations — a good contractor sizes the system to your home, not just matches what you had before.
- Do I need a permit for hvac installation & repair in Great Falls?
- Most HVAC installations and replacements require a mechanical permit and inspection. Your contractor should pull the permit — if they suggest skipping it, that's a red flag.
About NeedInstall
NeedInstall helps connect customers with local installation professionals across Great Falls and surrounding communities. Featured contractors have claimed their profile and verified their business information. Listings marked as "Verified Pro" have been confirmed by the business owner.