Furnace Installation in Havre, MT
A new furnace here will run from September through June every year. Tell us about the house, and a licensed contractor who covers Hill County will get in touch.
Tell us about the job
It takes about a minute.
Ten months of heat, down to 8 below
Havre asks a lot of a furnace. Winter nights average 8°F from December through February, and homes here need heat from September clear through June, ten months of the year. That is most of the calendar spent leaning on a furnace that has to start reliably in real cold, not just take the edge off a chilly morning.
Most homes here heat with gas, and any non-weatherized gas furnace built since November 2015 has to reach at least 80 percent AFUE. Winters in Montana also bring the kind of weather that knocks out power, so a new furnace installed here should be sized and set up for a long, hard season, not a mild one.
- 10 months
- September through June, your furnace is on duty
- 8°F
- the average winter night it heats against
- 66%
- of homes here heat with gas, so most furnaces here burn gas
- 80% AFUE
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
A high-efficiency gas furnace would save about $80 a year to run in Hill County compared with a gas furnace.
Estimates for a typical Hill County home, from EIA household energy data, Montana fuel prices and NOAA climate normals. Your home will differ.
Montana requires HVAC contractors to hold a state license.
The license is issued to the contractor, not to this specific job. It covers the company across every installation it does in Montana, and the Department of Labor and Industry is the one testing and keeping that record, not the county or the city. Work under $2,500 does not need a licensed contractor. A furnace installation runs well past that line, so this job falls under the license requirement.
Beyond the license, the local building office is the other check on this job. Most cities and counties require a permit for a furnace replacement and an inspection once the work is done. In Hill County, where most homes heat with gas, that inspection is the point where someone other than the installer signs off on the finished job.
Source: Montana Legislature
- What size furnace does my house need?
- A contractor sizes it with a load calculation, not a chart based on square footage alone. That calculation looks at your insulation, your windows, your ceiling height, and how the house is laid out room by room. Here in Havre, with winter nights averaging 8°F and heat needed from September through June, an undersized furnace will run constantly and still leave rooms cold, while an oversized one cycles on and off too fast and wears out sooner. Ask whoever quotes the job to walk you through the numbers, not just give you a tonnage.
- How do I know it's time to replace my furnace?
- Watch for rooms that stay cold no matter how high you turn the thermostat, a furnace that cycles on and off more than it used to, or a gas bill that keeps climbing without a reason. If a contractor keeps coming out for the same repair, that's usually the sign to stop patching it and start pricing a replacement. An older furnace also works harder to do the same job a new one would do easily, and with heat needed here 10 months a year, that adds up fast. If yours is a non-weatherized gas furnace built after November 2015, it's already required to run at 80 percent AFUE or better, so anything older is likely burning more gas to make the same heat.
- Is a high-efficiency furnace worth it?
- It depends on how many months your furnace actually runs, and here that's most of the year. With heat needed from September through June and winter nights averaging 8°F, a furnace in Havre logs a lot more hours than one in a milder climate, so the efficiency difference shows up more in the gas bill over a season. Hill County runs mostly on gas heat, at 66.3 percent of homes, so that fuel cost is worth weighing against the upfront difference in price. A contractor can price out both options for your specific house and tell you what payback looks like for your situation.