Furnace Repair in Crossville, TN
Furnaces here run from October through April. If yours quits, tell us what it's doing and a licensed contractor who covers Cumberland County will get in touch.
Tell us about the job
It takes about a minute.
Crossville furnaces work seven months a year
Your furnace runs October through April here, and on winter nights averaging 29°F it cycles on and off for hours at a stretch. Each start puts a load on the igniter and the flame sensor, and over enough winters those are usually the first parts to fail. When the igniter goes, the furnace won't light at all and the house just stays cold.
Almost half the homes in this area heat with electricity, and Cumberland County sees its share of winter storms and high wind. When the power drops, an electric furnace stops producing heat until it's back, and a gas furnace with electric ignition won't light either. If your furnace has a standing pilot, that flame stays lit through the outage, but the blower still needs power to push warm air through the house.
- 7 months
- October through April, your furnace is on duty
- 29°F
- the average winter night it heats against
- 10 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 it's the thermostat, a tripped breaker, or the switch on the furnace itself. Check that the furnace's power switch is on, it looks like a light switch near the unit, and check the breaker panel too. If those are fine, the igniter or a safety switch inside the furnace may have failed, and that calls for a contractor to open it up and test it. Winter nights here average 29°F, so a furnace that won't start is worth getting looked at quickly.
- Why is my furnace blowing cold air?
- The blower may be running before the burners have caught, which is normal for the first minute or so of a cycle. If cold air keeps coming for longer than that, the igniter or flame sensor likely isn't lighting the burners at all, and the blower is pushing unheated air through the vents. A dirty filter can also choke off airflow enough to cause temperature swings. If the air stays cold, the furnace needs a contractor to find out why the burners aren't firing.
- Why won't my furnace pilot light stay lit?
- A pilot that won't stay lit is usually a worn thermocouple, the small sensor that tells the gas valve the flame is burning. When it wears out, it reads no flame even when there is one, and the valve shuts the gas off. Wind or a draft in the vent can also blow the pilot out, so check that nothing is blocking the flue outside. Since this repeats, have a contractor test the thermocouple and the valve rather than relighting it over and over.