Furnace Repair in Orell, KY

The first cold morning is when Orell furnaces fail

Most furnace breakdowns do not happen in the middle of January. They happen on the
first genuinely cold morning in the fall, when a furnace that has sat idle since March
is asked to run for hours. In Orell, with wooded lots running up toward Jefferson
Memorial Forest and damp ground near the river, idle season is hard on equipment.
Here is what typically goes wrong, roughly in order of how often we find it.

What goes wrong after a summer of sitting

A condensate trap full of summer algae

On a high-efficiency furnace, the air conditioner’s coil often drains through the
same condensate trap and line the furnace uses. All summer, that line carries warm
water, and in a humid river-valley summer algae grows in it. When heating season
starts, the furnace’s own condensate has nowhere to go, the pressure switch or float
switch trips, and the furnace locks out. Clearing and flushing the trap is a short
repair. It is also exactly what a fall tune-up catches before it becomes a no-heat
call.

Rodent damage near the forest edge

Mice looking for shelter find quiet, idle furnaces. They nest in the blower
compartment and chew the thin low-voltage wiring between the thermostat and control
board. The symptom is a furnace that does nothing at all, or behaves erratically,
with no obvious failed part. We trace and repair the wiring, clean out the nest, and
point out where they are getting in.

Igniters and flame sensors

Hot-surface igniters are brittle and tend to crack on a cold start after months of
rest. Flame sensors build up an oxide film that weakens the signal the control board
needs to see before it will keep the gas valve open. The result is a furnace that
lights, runs for a few seconds, and shuts off. Both are inexpensive parts, and both
are the first things we test.

The burning-dust smell, and when it is not just dust

A brief burning smell the first time the heat runs is dust burning off the heat
exchanger, and it should fade within an hour. A smell that persists, an electrical
or plastic smell, or any smell of gas is different. Turn the furnace off and call. If
you smell gas, leave the house first. Our guide to
carbon
monoxide warning signs covers what to watch for.

How we diagnose

• Cheap and common causes first: filter, thermostat, igniter, flame sensor, condensate
• Wiring and control board check, including rodent damage
• Combustion and carbon monoxide testing
• Heat exchanger inspection
• Temperature rise and static pressure, to catch airflow problems that cause repeat failures
• A written recommendation with prices, repair and replacement both where relevant

For a fuller picture of what a thorough check involves, see
what
happens during a professional furnace inspection.

Avoiding the first-cold-day call

Nearly everything above is caught by a fall tune-up done in September or October,
before you need the heat. Our Pro
Saver Club maintenance plan schedules that visit for you each year.

Related services

• Furnace tune-ups
• Emergency furnace repair
• Furnace installation and replacement
• Heat pump options
• Back to HVAC service in Orell
• Nearby: furnace repair in Valley Station