Furnace Repair in Valley Station, KY

In Valley Station, a lot of furnace problems start with water

Nearly nine in ten Valley Station homes heat with natural gas, so when the heat
goes out here, it is almost always a gas furnace. And because so much of the
neighborhood sits on damp, low ground between the Ohio River and the knobs, a
surprising share of those failures trace back to moisture rather than to the furnace
simply wearing out.

The Valley Station furnace failures we see most

Frozen condensate lines on high-efficiency furnaces

A 90-plus percent furnace produces water as it runs, often several gallons a day in
cold weather. That water drains through a condensate line, and in a lot of Valley
Station homes the line runs through an unheated crawlspace or out an exterior wall.
In a hard cold snap, it freezes. The water backs up, the pressure switch or float
switch sees it, and the furnace shuts itself off. It looks like a dead furnace. It is
actually a safety switch doing its job.

The repair is usually rerouting or insulating the line, sometimes adding heat
tape, not replacing anything expensive. If your furnace quits on the coldest morning
of the year and then works again in the afternoon, this is the first thing we check.

Corrosion from damp combustion air

Furnaces that draw combustion air from a humid crawlspace or utility room corrode
faster: rusted burners, flaking scale falling onto the burner tray, corroded
connections at the flame sensor and igniter. Rust scale on burner ports produces an
uneven flame, which creates hot spots on the heat exchanger. Left alone, that is how a
heat exchanger cracks early.

The ordinary causes, which still come first

Dirty flame sensor, failed hot-surface igniter, clogged filter, a thermostat
problem. These are cheap, common, and we rule them out before discussing anything
larger. A contractor who skips straight to replacement has not done the diagnosis.

If your furnace has been under water

Parts of southwest Jefferson County have a flooding history, and heavy rain can
put water into crawlspaces and low basements even with the floodwall doing its job.
If water has reached your furnace’s gas valve or control board, the furnace should
not be turned back on until it has been inspected. A gas valve that has been
submerged has to be replaced. It cannot be dried out and trusted. The same goes for
control boards and, in most cases, the blower motor.

We will tell you honestly which parts need replacing and whether the rest of the
furnace is worth keeping.

What a furnace repair visit includes

• Full diagnosis before any quote, including the cause and not just the failed part
• Combustion and carbon monoxide check on the flue and supply air
• Heat exchanger inspection, which matters more on corroded equipment
• Condensate drain and trap check on high-efficiency units
• Temperature rise across the heat exchanger, compared to the manufacturer’s range
• A written repair-or-replace recommendation with prices for both

Repair or replace?

Many Valley Station furnaces are standard-efficiency units from the 1990s and early
2000s. If yours is in that age range and needs a major part such as a heat exchanger,
inducer motor, or control board, replacement often makes more sense. If it needs an
igniter or a flame sensor, it almost never does. We will give you both numbers and let
you decide.

If replacement is the right call, we size the new furnace with a load calculation,
not by copying the old one. Our guide to furnace
sizing and Manual J explains why that matters, and
80% versus 96% AFUE
covers the efficiency choice.

Related services

• Emergency furnace repair
• Furnace tune-ups, the best way to catch corrosion early
• Furnace installation and replacement
• Crawlspace and whole-house dehumidification
• Back to HVAC service in Valley Station
• Nearby: furnace repair in Orell