Furnace Repair in Farmington, MO
Furnaces here run from October through April. If yours quits, tell us what it's doing and a licensed contractor who covers St. Francois County will get in touch.
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It takes about a minute.
Farmington asks a lot of a furnace for seven months straight
From October through April your furnace is the thing standing between your house and a 25°F night. That means the burner is lighting and shutting off over and over, night after night, for most of the year. Every one of those cycles puts wear on the igniter and the parts that control the flame.
Most furnaces need electricity to run the blower and controls even if they burn gas, so when the power drops, so does your heat. That matters here. Missouri saw 19% of households go at least 24 hours without power in 2024, and this area has recorded seven winter storms and 54 damaging wind events over the past ten years. With 71.4% of homes in the area heating with electricity, a storm cutting power during one of those cold nights means the heat goes out along with it.
- 7 months
- October through April, your furnace is on duty
- 25°F
- the average winter night it heats against
- 7 winter storms
- in ten years, the nights a failure hurts most
NOAA nClimDiv, 1991–2020 normals
- Why won't my furnace turn on?
- Most often the thermostat isn't sending power to the furnace, or the furnace isn't getting power at all. Check that the thermostat is set to heat and the temperature is above room temperature, and check the breaker and the furnace's own power switch, which looks like a light switch near the unit. If those are fine, the igniter may have failed or the flame sensor may be dirty enough that the furnace won't stay running. With winter nights here averaging 25°F, a furnace that won't start is worth having looked at the same day.
- Why is my furnace blowing cold air?
- If air is blowing but never warms up, the burners likely aren't lighting even though the blower is running. A dirty flame sensor, a failed igniter, or a closed gas valve can all cause this. It can also mean the thermostat fan setting is on "on" instead of "auto", which runs the blower between heating cycles and feels like cold air. A furnace that's actually not heating needs a contractor to check the ignition system.
- Why won't my furnace pilot light stay lit?
- A pilot that won't stay lit usually means the thermocouple has worn out or is out of position. The thermocouple is the small sensor that tells the gas valve the pilot is burning, and once it can't sense the flame properly, the valve shuts the gas off as a safety measure. A draft blowing across the pilot or a dirty pilot opening can cause the same problem. Since a standing pilot doesn't need power to run, this failure has nothing to do with outages and points straight to the pilot assembly itself.