Furnace Repair in Plainfield, IN
Furnaces here run from October through May. If yours quits, tell us what it's doing and a licensed contractor who covers Hendricks County will get in touch.
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Eight months of heat wears a furnace down in Plainfield
From October through May, your furnace is what keeps the house warm on nights that average 22°F. That is eight months of the burner lighting and the blower running, winter after winter, and every cycle puts wear on the igniter and the control board.
The area has also seen 10 winter storms and 71 damaging wind events over the past ten years, and in 2024, 17% of Indiana households went at least 24 hours without power. A gas furnace needs power to run the blower and the control board, so when the power goes out, the furnace stops with it. Most units come back on their own once power returns.
- 8 months
- October through May, your furnace is on duty
- 22°F
- the average winter night it heats against
- 55%
- 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 $110 a year off heating for a typical Hendricks County home.
Estimates for a typical Hendricks County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, Indiana 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.
In Indiana, HVAC licensing for homes is left to the counties and cities.
Indiana does not license HVAC contractors at the state level. That job is left to counties and cities, so whether a contractor is licensed depends on the office that covers the address, not on any state board or exam. There is no state record to check because Indiana does not keep one.
For a furnace repair, the part that matters most is the gas connection, since that is where a mistake turns dangerous. Whether that connection gets checked comes down to whatever Hendricks County or its cities require, since no state license stands behind it. In Hendricks County, 55.1% of homes heat with gas, so gas furnace repairs are among the work those local rules would apply to.
Sources: Indiana Department of Workforce Development · State of Indiana
- 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, since a setting bumped a degree or two can look like a dead furnace. Check the breaker next, because a tripped one will stop the furnace before it ever tries to light. If those are fine, the igniter or a safety switch may be keeping it from starting, and that calls for a contractor to check.
- Why is my furnace blowing cold air?
- Most often the blower is running before the burners have caught up, which happens for a short stretch every time the furnace starts. If cold air keeps coming for more than a few minutes, the igniter may not be lighting the burners at all, or the flame sensor is shutting them off right after. A dirty filter can also make the air feel cooler than it should, since it slows the air moving across the heat exchanger. If changing the filter doesn't help, have a contractor look at the igniter and flame sensor.
- Why won't my furnace pilot light stay lit?
- This usually comes down to the thermocouple, the small part that senses the pilot flame and keeps gas flowing to it. When it wears out or sits out of position, it reads the flame as out even when it's lit, and shuts the gas off. A draft blowing across the pilot can also snuff it out, so check that the area around it is clear. If relighting it doesn't hold, the thermocouple likely needs to be adjusted or replaced by a contractor.