Furnace Repair in Ennis, MT
Furnaces here run from August through June. If yours quits, tell us what it's doing and a licensed contractor who covers Madison County will get in touch.
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Eleven months of heat puts the strain somewhere
Ennis needs a working furnace from August through June. Winter nights average 14°F from December through February, so the furnace is not just running long, it is cycling on and off for hours to hold the house against that cold. Each start puts wear on the igniter and the blower motor.
Almost half the homes here heat with propane, and a propane furnace needs steady power to run its igniter and blower. Montana saw 74 winter storms and 83 damaging wind events over the past ten years, and in 2024, 18% of households in the state went at least a day without power. When the power drops on a cold night, the furnace stops with it, and it has to relight the moment power comes back.
- 11 months
- August through June, your furnace is on duty
- 14°F
- the average winter night it heats against
- 74 winter storms
- in ten years, the nights a failure hurts most
NOAA nClimDiv, 1991–2020 normals
A new furnace would cut about $210 a year off heating for a typical Madison County home.
Estimates for a typical Madison County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Montana fuel prices and NOAA climate normals. Your home will differ.
Repair makes sense when one part has failed and the heat exchanger is sound.
Replacement makes sense when the heat exchanger is cracked or the furnace keeps needing parts.
Montana requires HVAC contractors to hold a state license.
The license covers the contractor, not the job itself, so the same license applies whether this is a small repair or a full replacement. That license is on file with the Department of Labor and Industry.
Montana sets one exception to that rule. Work under $2,500 does not need a licensed contractor. A furnace repair can fall on either side of that line depending on what the job turns out to be.
Source: Montana Legislature
- Why won't my furnace turn on?
- Most often it's the thermostat not calling for heat, a tripped breaker, or a safety switch that's shut the system down. Check the thermostat first, since a dead battery or a setting bumped to cool will stop the furnace cold. If the breaker's fine and the thermostat is calling for heat but nothing happens, the igniter or a limit switch may have failed, and that's a job for a licensed contractor to diagnose. With winter nights here averaging 14°F, it's worth getting this looked at quickly rather than waiting.
- Why is my furnace blowing cold air?
- If air is moving but it's not warm, the furnace may be running the blower without the burners lighting. That points to an ignition problem or a gas supply issue. It can also happen right when the system first kicks on, before the heat exchanger warms up, so a few seconds of cool air isn't unusual. If cold air keeps blowing the whole cycle, that's a sign the burners aren't firing and the furnace needs a contractor to find out why.
- Why won't my furnace pilot light stay lit?
- This usually means the thermocouple has worn out and is no longer sensing the pilot flame correctly, so it shuts the gas valve even though the flame is lit. A draft blowing out the pilot or a dirty pilot orifice can also cause it. Since close to half the homes here heat with propane, a weak or flickering pilot is worth taking seriously rather than relighting it over and over. A licensed contractor can test the thermocouple and replace it if that's the cause.