Furnace Repair in Rigby, ID
Furnaces here run from September through June. If yours quits, tell us what it's doing and a licensed contractor who covers Jefferson County will get in touch.
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Rigby asks a lot of a furnace
Your furnace runs from September through June here, ten months of the year. On winter nights that average 11°F, the burner is lighting and shutting off many times a day. Each cycle puts wear on the igniter and the flame sensor, and that wear catches up with them somewhere in the middle of those ten months.
Jefferson County has logged 58 winter storms and 144 damaging wind events over the past ten years, and across Idaho 11% of households lost power for a day or more in 2024. A gas furnace needs electricity to run its blower and controls even though the burner itself is gas. If the power has flickered and your furnace won't come back on, that is the first thing worth checking.
- 10 months
- September through June, your furnace is on duty
- 11°F
- the average winter night it heats against
- 58 winter storms
- in ten years, the nights a failure hurts most
NOAA nClimDiv, 1991–2020 normals
A new furnace would cut about $100 a year off heating for a typical Jefferson County home.
Estimates for a typical Jefferson County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Idaho 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.
Idaho requires HVAC contractors to hold a state license.
The state tested the contractor before handing out that license, and the license is tied to the contractor, not to this particular repair. It stays on record with the HVAC Board, so anyone can trace the work back to the person who held the license when it was done.
For a furnace repair, that license is what stands behind the person working on your gas line and burner assembly. Almost half the homes in Jefferson County heat with gas, so a bad connection here is not a small thing, and the state's answer to that risk is the same license this page already named.
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 or power isn't reaching the furnace. Check that the thermostat is set above room temperature and has fresh batteries if it uses them. Next look at the furnace switch, which looks like a light switch near the unit, and the breaker at your panel. If those are fine, the igniter or a safety switch inside the furnace may have failed, and that needs a contractor to check. With nights averaging 11°F here, a furnace that won't start needs attention the same day.
- Why is my furnace blowing cold air?
- If air is moving but it's cold, the furnace may be running on the fan only rather than actually heating. Check that your thermostat fan setting is on auto, not on. If it's already set right, the igniter may not be lighting the burners, or the gas valve isn't opening when it should. Either problem stops heat production while the blower keeps running, and it calls for a contractor to look at the burner assembly.
- Why won't my furnace pilot light stay lit?
- A pilot that won't stay lit usually means the thermocouple has worn out. That's the small sensor that tells the gas valve the pilot is burning, and once it fails the valve shuts the gas off as a safety measure. Drafts blowing out the flame or a dirty pilot orifice can also cause it. A contractor can test the thermocouple and replace it if that's the cause.