Furnace Repair in Franklin, TN
Furnaces here run from October through April. If yours quits, tell us what it's doing and a licensed contractor who covers Williamson County will get in touch.
Tell us about the job
It takes about a minute.
Franklin furnaces work seven months straight
October through April, your furnace is what stands between your house and a 30°F night. That is seven months of the burner cycling on and off to hold the temperature you set. Every one of those starts wears on the igniter and the flame sensor. After enough winters, one of them gives out. The furnace tries to start. It either will not light, or it lights and then shuts itself back down.
More than half the homes here heat with gas, so a furnace failure is usually a gas furnace problem, and the fix is specific to those parts. Williamson County also sees its share of winter storms and wind. When the power drops, a gas furnace with electronic ignition will not restart on its own. It needs the power back and someone to reset it.
- 7 months
- October through April, your furnace is on duty
- 30°F
- the average winter night it heats against
- 53%
- of homes here heat with gas, so most furnaces here burn gas
- 10 winter storms
- in ten years, the nights a failure hurts most
NOAA nClimDiv, 1991–2020 normals
A new furnace would cut about $80 a year off heating for a typical Williamson County home.
Estimates for a typical Williamson County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Tennessee 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.
- Why won't my furnace turn on?
- Start with the thermostat. Check that it is set to heat and the temperature is above room temperature, and check the batteries if it uses them. If the thermostat looks fine, check the breaker for the furnace and the switch that looks like a light switch near the unit, since that shuts the furnace off for service and sometimes gets left off by accident. Gas furnaces also need the pilot lit or the igniter working, so if power and thermostat both check out, the problem is likely inside the unit and worth having a contractor look at.
- Why is my furnace blowing cold air?
- Most often the furnace is running but hasn't started heating yet, since the blower can kick on before the burners fully ignite. If cold air keeps blowing the whole time it runs, check your air filter first, since a clogged one can choke the airflow the furnace needs to build up heat. If the filter is clean and you're still getting cold air, the igniter or a flame sensor may be failing and shutting the burners off, which needs a contractor to diagnose.
- Why won't my furnace pilot light stay lit?
- The thermocouple is the usual cause. It's the small sensor that sits in the pilot flame and tells the gas valve the flame is lit. When it wears out or sits out of position, it reads the flame as out even when it's burning, so the gas valve shuts off. A draft blowing across the pilot or a dirty pilot orifice can cause the same thing, and a contractor can tell which one it is and replace the part if needed.