Furnace Installation in Red Lodge, MT
A new furnace here will run from September through June every year. Tell us about the house, and a licensed contractor who covers Carbon County will get in touch.
Tell us about the job
It takes about a minute.
Ten months of heat a year, in a place that loses power
Red Lodge asks a furnace to work September through June. That is ten months of the year, with winter nights averaging 15°F. A new furnace here needs to hold up to a long, hard season, not a mild one with a few cold snaps.
The storm record backs this up. Carbon County has logged 189 winter storms and 47 damaging wind events over the past ten years, and across Montana 18% of households lost power for at least 24 hours in 2024. A furnace installed here should be matched to a home that may sit cold for a stretch, not just to a thermostat setting. Any new gas furnace also has to meet the federal minimum of 80.0 percent AFUE, so that baseline is set before you even start comparing models.
- 10 months
- September through June, your furnace is on duty
- 15°F
- the average winter night it heats against
- 80% AFUE
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
Montana requires HVAC contractors to hold a state license.
The license is held by the contractor, not issued job by job. It is the business itself that the state has on record. Montana sets one exception worth knowing. Work under $2,500 does not require a licensed contractor. A furnace installation runs well past that line, so the contractor doing this job should hold the state license.
That license is what stands behind the work here, but it is not the only check. Most cities and counties in Montana require a permit for a furnace installation. An inspection follows once the work is finished, done by the local building office rather than the state licensing board.
Source: Montana Legislature
- What size furnace does my house need?
- There's no single number that fits every house. A furnace has to match your square footage, your insulation, your windows, and how the place holds heat once it's warm, so a contractor works this out with a load calculation rather than a guess based on the old unit's size. With winter lows here averaging 15°F and heat needed from September through June, getting the size right matters more than in milder places. Too big and it cycles on and off without evening out the house. Too small and it runs constantly and still can't keep up on the coldest nights.
- How do I know it's time to replace my furnace?
- Watch for uneven heat, rooms that stay cold, or a furnace that runs longer than it used to just to hold the same temperature. Rising repair calls are another sign, especially if the same part keeps failing. Age matters too. A furnace installed new today has to meet 80.0 percent AFUE at minimum, so if yours is much older it's likely running well below that, burning more gas for the same heat. This house needs heat ten months out of the year, so a furnace that's struggling doesn't get much of a break to show its age gradually. It tends to show up fast, right when you need it most.
- Is a high-efficiency furnace worth it?
- It depends on how long you plan to stay in the house and what you're replacing. Any new non-weatherized gas furnace has to hit at least 80.0 percent AFUE by law, so the real choice is between that baseline and a higher-efficiency model that wastes less heat out the flue. With heat running from September through June here, a more efficient furnace has ten months a year to make a difference. A contractor can walk through the actual models and their ratings and tell you what the difference looks like for your house.