Furnace Repair in Liberty, MO
Furnaces here run from October through April. If yours quits, tell us what it's doing and a licensed contractor who covers Clay County will get in touch.
Tell us about the job
It takes about a minute.
Seven months of work, and nights near 22°F
Your furnace runs October through April in Clay County, seven months of the year. On the coldest nights, when the temperature outside sits near 22°F, it cycles on and off for hours to hold the house steady. Every one of those starts asks the igniter to light the burner again, and that part wears a little more each time until one night it doesn't fire.
Most homes here heat with gas, and gas furnaces depend on power to run the blower and the control board. Clay County sees its share of winter storms and wind, and when the power drops so does your furnace, gas or not. If it won't start back up once the lights come on, that's often a control board or a blower motor that needs a look, not the gas line.
- 7 months
- October through April, your furnace is on duty
- 22°F
- the average winter night it heats against
- 67%
- of homes here heat with gas, so most furnaces here burn gas
- 9 winter storms
- in ten years, the nights a failure hurts most

NOAA nClimDiv, 1991–2020 normals
A new furnace would cut about $200 a year off heating for a typical Clay County home.
Estimates for a typical Clay County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Missouri 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. Make sure it's set to heat and the temperature is set above room temperature, and check that the batteries aren't dead if it has them. If the thermostat looks fine, check your breaker panel and the furnace's own power switch, which looks like a light switch near the unit. A furnace that still won't start after that may have a bad igniter, a flame sensor that needs cleaning, or a safety switch that's tripped, and a contractor will need to open it up to tell which.
- Why is my furnace blowing cold air?
- Most often this means the blower is running but the burners haven't lit yet. Furnaces blow a few seconds of cool air while they start up, so if it clears up after a minute that's normal. If cold air keeps coming, check your air filter first, since a clogged one can choke off the burners even when the blower runs fine. If the filter is clean and the air stays cold, the igniter or gas valve likely isn't working and the furnace needs a look from someone licensed to work on it.
- Why won't my furnace pilot light stay lit?
- This usually points to the thermocouple, the small sensor that tells the gas valve the pilot is burning. When it wears out or sits out of position, it shuts the gas off even though the flame is lit. A draft blowing across the pilot or a dirty pilot orifice can also snuff it out. Relighting it yourself may work for a night, but if it keeps going out, the thermocouple or the pilot assembly needs to be replaced, and that's a job for a contractor since it involves the gas line.


