HVAC Installation in Bozeman, MT
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A new system here needs to handle ten months of heat
Gallatin County asks for heat from September through June, ten months a year. Winter nights average 13°F from December through February, and a new furnace has to hold the house through that stretch without strain. Summer afternoons average 74°F, mild enough that cooling is not the main job here.
55.2% of homes in the county heat with gas. The county has logged 124 winter storms and 77 damaging wind events over the past ten years, and in 2024, 18% of Montana households went at least 24 hours without power. A furnace with a standing pilot keeps running through an outage without any power at all, which is worth asking about when you are choosing what goes in.
- 10 months
- September through June, your system heats
- 13°F
- the average winter night it heats against
- 74°F
- the average summer afternoon it cools against
Montana requires HVAC contractors to hold a state license.
The license is tied to the contractor, not to each job, so it covers everything they install under it. Work under $2,500 falls outside that requirement, but a full heating and cooling installation runs well past that line, so the contractor doing this job needs to hold the license.
Most cities and counties in Montana also require a permit for this kind of installation, with an inspection once the work is finished. The license is what the state issues to the contractor. The permit and inspection are the local check on this particular installation, done by the building office where the home is.
Source: Montana Legislature
- When should I replace my HVAC system?
- Replace it when repairs get frequent, the system is old, or it can't keep the house warm through a night at 13 below. A furnace that short cycles or won't hold a set temperature is telling you the heat exchanger or blower is wearing out. Here, the furnace runs from September through June, so it carries most of the load in the house and wears accordingly. If yours is already calling for service more than once a season, waiting usually just means paying for a repair and a replacement instead of one or the other.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, yes, because they were sized and installed to work as one system, and replacing only one can leave the other running against a mismatched part. That said, cooling barely matters here. Summer afternoons average 74°F, and this area doesn't have a real cooling season, so a lot of homes get by on the furnace alone or a small air conditioner that runs rarely. If your air conditioner is still working fine, there's no mechanical reason to swap it out just because the furnace needs replacing.
- What happens during an HVAC installation?
- A contractor removes the old equipment, sets the new furnace or air conditioner, and connects it to the ducts, gas line or electrical circuit, and the vent or flue. They'll check the ductwork for leaks or sizing problems, since new equipment moving air through bad ducts won't perform right. Once it's running, they test it, measure air flow and temperature, and pull a permit so the local building office can inspect the work. Montana requires a licensed contractor for this kind of job, and a contractor will price the work for your specific house.