A furnace that won't light, keeps shutting off, or blows cold air during a Robertson County cold snap is a same-day problem. Local contractors diagnose and repair gas and electric furnaces across Springfield -- pulling the fault history rather than guessing -- and quote the repair before doing the work.
Springfield is the Robertson County seat, laid out in 1798 around a public square where the courthouse still stands at the center of a downtown listed on the National Register of Historic Places. The county built its economy on dark-fired tobacco — Springfield is still known as the dark-fired tobacco capital of the world — and it remains one of Tennessee's larger agricultural counties, even as commuters have filled in subdivisions along the roads toward Nashville, about 30 miles to the south. That history shows up in the housing: roughly 42% of Springfield's homes were built before 1980, while the newer neighborhoods on the edges of town date from the 1990s onward (U.S. Census ACS 2024 5-year estimates). About two-thirds of homes here heat with electricity, which mostly means heat pumps working through both Middle Tennessee summers and winter cold snaps, so the age of the outdoor unit and the condition of older ductwork drive most repair-or-replace decisions. Older houses near the square often have ductwork added after the fact, which can cause airflow and sizing problems that a simple equipment swap won't fix.
Common Furnace Failures in Middle Tennessee
Furnaces in Middle Tennessee run long heating seasons and most failures are wear items rather than a dead furnace. The order a technician checks them in reflects how often each is the cause, and a furnace with a documented repair history often points the technician straight to the likely culprit before the panel even comes off.
- Igniter failure -- the single most common furnace repair; the igniter wears out and will not light the burners.
- Flame sensor fouling -- a dirty sensor shuts the burner down seconds after ignition as a safety response, so the furnace 'starts and quits'.
- Draft inducer motor or pressure switch -- the furnace tries to start but never proves airflow, so ignition never begins.
- Control board or thermostat fault -- intermittent no-starts, or a furnace that ignores the call for heat.
- Blower motor or capacitor -- the burners light but little or no warm air reaches the vents.
- Cracked heat exchanger -- a safety issue, checked on every furnace call; a confirmed crack means the furnace is shut down until repaired or replaced.
Repair or Replace a Furnace
The decision comes down to the furnace's age, the cost and scope of this specific repair, and whether it has a history of repeated failures. None of those three factors decides it alone -- a young furnace with an expensive-sounding repair is usually still worth fixing, while an old furnace with a cheap repair but a long history of callbacks may not be.
- Under ~12 years old with a single failed part (igniter, sensor, inducer, capacitor) -- repair, almost always.
- A cracked heat exchanger on an older unit, or a second major failure in a couple of seasons -- replacement is usually the better spend.
- Furnace repair does not fix a system that is undersized for the house or ductwork that leaks into a crawlspace -- those are separate scopes.
- A contractor lays out both the repair number and, where it is close, a replacement number, so the choice is yours with real figures.
This content is reviewed by the Clarksville HVAC Repairs editorial team and informed by licensed-contractor sourcing, manufacturer documentation, and established industry standards for hvac repair. Read our editorial standards.