Furnace Repair in Warrensburg, MO
Furnaces here run from October through April. If yours quits, tell us what it's doing and a licensed contractor who covers Johnson County will get in touch.
Tell us about the job
It takes about a minute.
Seven months of work in the cold
Your furnace runs from October through April here, seven months of the year. On nights that average 24°F, it cycles on and off for hours at a time to hold the house steady. Every one of those cycles puts a load on the igniter and the flame sensor, and over a winter that adds up fast.
Johnson County has seen 10 winter storms and 61 damaging wind events over the past ten years. Storms like that knock out power, and almost half the homes here heat with electricity, so a furnace that depends on it goes quiet right when the cold sets in. Across Missouri, 19% of households went at least 24 hours without power in 2024. When the power drops and comes back, a furnace that does not restart on its own is telling you something worth checking.
- 7 months
- October through April, your furnace is on duty
- 24°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?
- The most common reason is the thermostat isn't calling for heat the way it should, or a safety switch has shut the furnace down before it can start. Check that the thermostat is set below room temperature and has power. After that, look at the filter. A filter clogged enough can trip a limit switch and keep the furnace from firing at all. If the thermostat and filter are fine, the igniter, control board, or a pressure switch could be the problem, and those need a contractor to test.
- Why is my furnace blowing cold air?
- Most of the time this means the blower is running but the burners haven't lit, or the furnace is between cycles and hasn't warmed up yet. A dirty flame sensor is a common cause. It shuts the gas valve off as a safety measure even though the blower keeps pushing air. It can also mean the igniter is failing or the gas valve itself isn't opening. Any of these needs a contractor to look at the burner assembly directly.
- Why won't my furnace pilot light stay lit?
- This usually means the thermocouple has worn out and can no longer sense that the pilot is lit, so the gas valve shuts it off. It can also mean a draft is blowing the flame out, or the pilot tube is partly clogged. A standing pilot doesn't use electricity, so a power outage isn't the cause. A contractor can test the thermocouple and clean or replace the pilot assembly.