HVAC Cost in Great Falls, MT in 2026
Most HVAC projects in Great Falls, MT cost between $4,900 and $15,500. The typical price is $9,000.
Labour and materials in Great Falls run about 3% below the national average. These figures are adjusted for that, so they are not the national average you will find elsewhere.
What drives the price
- System size in tons and efficiency rating
- Heat pump versus furnace plus AC
- Ductwork condition and whether it is replaced
- Electrical or gas line changes
Usually included
- Equipment and refrigerant lines
- Installation, startup and commissioning
- New thermostat
- Haul-away of the old unit
Usually extra
- Duct replacement
- Electrical panel upgrades
- Permits and inspections
HVAC contractors in Great Falls, MT
Businesses listed on Google near Great Falls, MT. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
Kindred Plumbing and Heating, Inc.
4.6(295 reviews)
1019 8th Ave N, Great Falls, MT 59401
Northern Heating & Cooling
4.9(202 reviews)
2501 17th St NE, Black Eagle, MT 59414
Gill's Heating & Cooling, Inc.
5.0(67 reviews)
315 4th St S, Great Falls, MT 59405
AT Klemens
4.6(67 reviews)
814 12th St N, Great Falls, MT 59401
Falls Mechanical Services LLC
4.7(48 reviews)
600 2nd St S, Great Falls, MT 59405
MacDonald Heating & Cooling
4.9(17 reviews)
156 Wilson Butte Rd, Great Falls, MT 59405