Furnace Repair in Murfreesboro, TN
Furnaces here run from October through April. If yours quits, tell us what it's doing and a licensed contractor who covers Rutherford County will get in touch.
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Seven months of heat puts real wear on your furnace
Rutherford County homes need heat from October through April. That's seven months of the burner lighting, running, and shutting off, night after night, while winter lows average 31°F. Every one of those cycles puts a little more wear on the igniter and the flame sensor. Eventually one of them gives out and the furnace won't light at all.
Most homes here heat with electricity, so when the power goes out, the furnace stops too. Tennessee saw 20% of households lose power for 24 hours or more in 2024, and Rutherford County has logged 9 winter storms and 137 damaging wind events over the past ten years. When the power comes back, some furnaces need a reset before they'll fire again.
- 7 months
- October through April, your furnace is on duty
- 31°F
- the average winter night it heats against
- 9 winter storms
- in ten years, the nights a failure hurts most
NOAA nClimDiv, 1991–2020 normals
- Why won't my furnace turn on?
- The most common reason is the thermostat isn't calling for heat, or the power to the furnace is interrupted. Check that the thermostat is set to heat and the temperature is above the room temperature. Next check the furnace's power switch, which looks like a light switch near the unit, and the circuit breaker. If those are fine, a safety switch may be stopping the furnace from starting, and a contractor will need to find which one.
- Why is my furnace blowing cold air?
- Most often the furnace is still warming up, or the blower is running without the burners lit. It takes a minute or two after startup for the air coming out of the vents to feel warm. If the air stays cold and never warms up, the igniter may not be lighting the burners, or the flame sensor is shutting the burners off right after they light. A contractor will need to check the igniter and flame sensor to find out which.
- Why won't my furnace pilot light stay lit?
- A pilot light that won't stay lit is usually a sign the thermocouple has worn out or is out of position. The thermocouple is the small sensor that sits in the pilot flame and tells the gas valve the pilot is burning. When it can't sense the flame, it shuts the gas off as a safety measure, even though the pilot lit a moment ago. A draft blowing out the pilot or a dirty pilot opening can cause the same thing, so a contractor will need to check which one is happening in your furnace.