Montana HVAC Pros
A snow-covered craftsman house at night with one illuminated window and an attached two-car garage.

HVAC Installation in Missoula, MT

Tell us about the house, and a licensed contractor who covers Missoula County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
An empty unfinished basement containing a forced-air furnace with overhead ductwork, exposed ceiling joists, and a single hanging light bulb.

Missoula heating systems work most of the year

Heat runs from September through June here, ten months a year. Summer afternoons average only 74°F, so the cooling side of a new system barely gets tested, but the furnace or heat pump carries the load almost every month there is.

Winter nights average 17°F from December through February. A new furnace or heat pump has to hold a house warm against that cold, night after night, for months at a stretch. Just over half of homes here heat with gas. Whatever goes in has to meet the federal minimum efficiency rating, and with a system running this much of the year, that rating counts for more here than somewhere the furnace sits idle half the time.

10 months
September through June, your system heats
17°F
the average winter night it heats against
74°F
the average summer afternoon it cools against
Isometric cutaway illustration of a small house showing a gray furnace unit with a flue pipe through the roof and branching ductwork running to rooms with simple furniture.

Montana requires HVAC contractors to hold a state license.

The license is held by the contractor, not issued job by job, so it's the business itself that the state has tested and put on record. Work under $2,500 falls outside this rule, but a full heating and cooling system installation runs well past that mark.

Since this job is licensed in Montana, that license is what stands behind the work. Beyond it, most cities and counties in the state also require a permit for a furnace, air conditioner or heat pump installation, with an inspection once the work is finished. That permit and inspection come from the local building office, separate from the state license.

Source: Montana Legislature

When should I replace my HVAC system?
Replace it when repairs start piling up or the system can no longer keep the house warm through a Missoula winter. A furnace that struggles when it's 17°F outside is telling you something, especially if it's already had more than one repair in a couple years. Age matters too. A furnace or air conditioner working that hard for 10 months a year wears faster than one running only a few months, so a system in its second decade here is a better candidate for replacement than repair. If the next fix costs a large share of a new system, that's usually the point to stop repairing.
Should I replace my furnace and air conditioner at the same time?
If they're close in age, yes, it usually makes sense to do both together. A furnace and air conditioner installed at the same time are matched to work as one system, and replacing only one can leave the other running against a mismatched partner. It also means one visit for permitting and inspection instead of two down the road. That said, if one unit is much newer than the other, there's no reason to replace something that still has years left in it.
What happens during an HVAC installation?
A contractor removes the old equipment, sets the new furnace and air conditioner, and connects them to the existing ductwork, gas line, electrical and condensate drain. They'll check the ducts can handle the new equipment's airflow and adjust as needed. Replacing a furnace and air conditioner needs a permit from the local building office in most Montana cities and counties, and an inspector checks the work once it's done. The contractor handles the permit and schedules that inspection as part of the job.