Furnace Repair in Jerome, ID
Furnaces here run from September through May. If yours quits, tell us what it's doing and a licensed contractor who covers Jerome County will get in touch.
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Nine months of heat puts real wear on your furnace
Jerome County needs a working furnace from September through May. That is nine months of the year the burner is lighting, and on winter nights that average 22°F, it is running long stretches to keep up. Each cycle puts wear on the igniter and the parts that control the flame.
Almost half the homes here heat with electricity, and outages are not rare in Idaho. Statewide, 11% of households lost power for at least 24 hours in 2024. When the power goes out on a cold night, an electric furnace stops until it comes back. Wind is part of why. This area has seen 18 damaging wind events and 12 winter storms over the past ten years, the kind of weather that knocks out power and puts a furnace to the test right when it is needed most.
- 9 months
- September through May, your furnace is on duty
- 22°F
- the average winter night it heats against
- 12 winter storms
- in ten years, the nights a failure hurts most
NOAA nClimDiv, 1991–2020 normals
Idaho requires HVAC contractors to hold a state license.
The license is held by the contractor, not tied to any single job, so the same license that qualifies someone to work on a furnace in Twin Falls covers the work here in Jerome County. Idaho's HVAC Board is the one that tested the contractor and keeps that record, not the county or the city.
For a furnace repair, that license is what stands behind the person in your house. Gas furnace work means checking the gas connection itself, since a bad connection is what makes the job dangerous, and that is part of what the state license is meant to cover.
Sources: Idaho Legislature · Idaho Division of Occupational and Professional Licenses
- Why won't my furnace turn on?
- Most often the thermostat isn't calling for heat the way it should, or power isn't reaching the furnace. Check that the thermostat is set below room temperature and has fresh batteries if it uses them. Look at the furnace switch, which looks like a light switch near the unit, and check the breaker too. If those are fine, the igniter or a safety switch inside the furnace may be the problem, and that calls for a contractor to open it up and test it.
- Why is my furnace blowing cold air?
- If air is moving but it's cold, the burners likely aren't lighting even though the blower is running. A dirty flame sensor is a common cause, and so is a clogged filter that's making the furnace overheat and shut the burners off as a safety measure. Check the filter first since that's the one thing you can do yourself. If it's clean and you're still getting cold air, the igniter, flame sensor, or gas valve needs a contractor to look at it, and with lows around 22°F here that's not something to leave for long.
- Why won't my furnace pilot light stay lit?
- A pilot that keeps going out almost always means the thermocouple has worn out. That's the small sensor that sits in the flame and tells the gas valve the pilot is lit. Once it wears out it stops sensing the flame correctly and shuts the gas off. A draft blowing out the flame is possible too, but if it happens repeatedly the thermocouple is the more likely cause, and a contractor can replace it.