Bare tree branches encased in ice with small icicles hanging from the tips, photographed during a snowstorm with a blurred building in the background.

Furnace Repair in La Grange, KY

Furnaces here run from October through April. If yours quits, tell us what it's doing and a licensed contractor who covers Oldham County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
A gas furnace and sheet-metal air handler unit installed in an unfinished concrete basement.

Seven months of heat, and cold nights to match

La Grange homes run the furnace from October through April. That's most of the year asking the burner to light, hold, and shut off, night after night, with winter lows averaging 26°F. Every one of those cycles puts wear on the igniter and the flame sensor, the parts that have to work each time the furnace starts.

Oldham County has also seen its share of winter storms, ten of them over the past ten years, along with 60 damaging wind events. When the power drops, the furnace stops with it, and in Kentucky, close to a quarter of households went at least a day without power in 2024. A furnace that was already struggling to light can fail to come back on when the power does.

7 months
October through April, your furnace is on duty
26°F
the average winter night it heats against
10 winter storms
in ten years, the nights a failure hurts most
Isometric line illustration of a cutaway house showing interior rooms with furniture and a furnace with ducting and a flue pipe extending through the roof.
Your furnace works hardest from November through March.

NOAA nClimDiv, 1991–2020 normals

Kentucky requires HVAC contractors to hold a state license.

The license comes from the Department of Housing, Buildings and Construction, and Kentucky tests and records the contractor who holds it. It is issued to the contractor, not the job, so the same license covers this repair and the next one that contractor takes on anywhere in the state.

For a furnace repair, that license is what stands behind the work. Gas connections are the part that can hurt someone if they are done wrong, and the license means the state has already checked that the contractor knows how to make them right.

Sources: Kentucky Legislative Research Commission · Kentucky Department of Housing, Buildings and Construction

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 has them. If the thermostat looks right, check the breaker and the furnace's own power switch, which looks like a light switch near the unit. Some furnaces also have a door that has to be seated correctly or a safety switch inside it will keep the furnace from starting. If the pilot or igniter has gone out, the furnace will not fire either, and that is worth a contractor's look.
Why is my furnace blowing cold air?
A furnace that only blows cold air is usually not heating at all, even though the fan is running. That points to an ignition problem, a flame that won't stay lit, or a safety switch shutting the burner down before it warms up. It is not a sign the furnace is set to the wrong mode unless someone changed the thermostat recently. A furnace fan can also run for a short stretch after the burner shuts off, and that air will feel cool, but it should not last long or happen constantly.
Why won't my furnace pilot light stay lit?
The most common reason is a worn thermocouple, the small part that senses the pilot flame and tells the gas valve it's safe to stay open. If it can't sense the flame properly, it shuts the gas off and the pilot goes out, even though the flame was fine a moment before. A draft blowing across the pilot or a dirty pilot orifice can cause the same thing. This is a repair for a licensed contractor, since it involves the gas line and the safety controls around it.