How Much Does HVAC Installation Cost in Montana in 2026
In the Remodeling 2025 Cost vs. Value Report (www.costvsvalue.com), the defined HVAC electrification conversion averaged $17,886 across Mountain-division markets, none of them in Montana. Montana HVAC mechanics earned a mean $29.94 an hour in May 2025, below the $31.14 U.S. figure (BLS). The state’s IRA home energy rebate program has not launched.
What an electrification conversion cost in the Mountain sample
The project behind these figures is labeled “HVAC Conversion | Electrification.” Its Mountain group is Albuquerque, Salt Lake City, the two Arizona cities (Tucson, Phoenix), Reno and Las Vegas, and Idaho Falls and Boise. Those eight markets averaged a 2025 job cost of $17,886 and a resale value of $14,248, for 79.7% of the cost recouped. The national averages are $19,484 in cost, $14,053 in resale value and 72% recouped.
The report defines the project’s scope, and these benchmarks from other states’ markets are not a quote for a Montana furnace or heat pump.
© 2025 Zonda Media, a Delaware Corporation. Complete data from the Remodeling 2025 Cost vs. Value Report can be downloaded free at www.costvsvalue.com.
Montana’s own figure is installer pay. The Bureau of Labor Statistics estimated 1,230 heating, air conditioning and refrigeration mechanics and installers (SOC 49-9021) employed in the state in May 2025. Their mean was $29.94 an hour, or $62,260 a year; the U.S. means were $31.14 and $64,780. At the median the two nearly meet, $29.26 against $29.33. Self-employed owner-operators fall outside these estimates, and a technician’s wage is only the labor share of an installed price.
The chapter 45 contractor license, and why it protects you
On January 1, 2026, House Bill 239 (Ch. 644, Laws of 2025) replaced Montana’s contractor registration with a Department of Labor & Industry license in Title 37, chapter 45. Section 37-45-102 defines a construction contractor as one who, for another, offers or undertakes “to construct, alter, repair, add to, subtract from, improve” a building or other “improvement attached to real estate.” Section 37-45-201 bars doing business as one “without a current license from the department.” The chapter’s 24 exemptions are in 37-45-104, several with conditions attached.
Check the license for your own sake. Under 37-45-202, if you engage a contractor “who is licensed under this chapter on the date of the contract,” you are “not liable as an employer” for workers’ compensation coverage, unemployment insurance coverage, or wages and fringe benefits for that contractor, its employees, or a subsequent subcontractor and that subcontractor’s employees. The state’s license search lists holders under the Construction Contractor Program.
Mechanical and electrical permits for a Montana furnace or heat pump
The Department of Labor & Industry’s Building Codes Program says state mechanical permits “are required for heating, ventilating, air-conditioning, restaurant kitchen hoods and other mechanical systems: (a) on all buildings to which state building permits are applicable, and (b) located outside cities certified to issue their own mechanical permits.” In the state’s jurisdiction, state law exempts five classes, it says: farm and ranch buildings; mining buildings on mining property; petroleum refineries and pulp and paper mills, except offices and shop buildings; “residential buildings containing less than five dwelling units (except when serving transient guests)”; and private garages and private storage buildings used for the owner’s own use, not as part of a business. The statutory basis is 50-60-102(1)(a) and (2): the state code does not apply to those houses unless a local legislative body adopts it, and the state may not enforce it for them, energy-conservation provisions under subsection (5) aside. Inside a certified city, county or town, the local program may enforce the mechanical code instead.
Wiring is separate. The program’s electrical page says “An electrical permit is required for any installation in any new construction, remodeling or repair, except as provided by Section 50-60-602, MCA.” One of those exceptions, 50-60-602(4), lets a vendor connect an appliance “if the connection does not necessitate the installation of electrical wiring of the structure”; the rest are in the section.
Where the state code does apply, the mechanical and fuel-gas editions changed on September 26, 2026: the 2024 International Mechanical Code and 2024 International Fuel Gas Code, adopted in MAR Notice No. 2026-95.2.
Tax credits and rebates as of September 2026
Under current law, 26 U.S.C. §25C “shall not apply with respect to any property placed in service after December 31, 2025,” and §25D, whose list includes qualified geothermal heat pump property expenditures, “shall not apply with respect to any expenditures made after December 31, 2025.” Both endings come from Pub. L. 119-21 of July 4, 2025 (§§70505 and 70506).
Montana’s Department of Environmental Quality runs the IRA-funded Home Energy Rebates Program (HOMES and HEEHR). Its program page, read September 29, 2026, says the program “is not currently available” and that “Final U.S. Department of Energy (DOE) approval of the implementation award is required in advance of program rollout.” The implementation application went to DOE in November 2024 and sits in “pended” status. It sends households instead to NorthWestern Energy and Montana-Dakota Utilities rebates and to DPHHS weatherization, each with its own terms.
Montana HVAC questions
Does a furnace swap in a rural house need a state mechanical permit?
No, if the house has fewer than five dwelling units, does not serve transient guests, and sits in the state’s jurisdiction. New wiring for the job still falls under the electrical permit rule.
Is Montana taking heat pump rebate applications?
Not through DEQ’s Home Energy Rebates Program, which its page listed as “not currently available” on September 29, 2026.
Does a one-person HVAC shop need the chapter 45 license?
Not if it has no employees: 37-45-104(24) exempts “an independent contractor who has no employees,” and adds that such a contractor “may voluntarily elect to register.” The 37-45-202 protection turns on a license held on the contract date, so ask which way the shop went.