Heat pumps provide both heating and cooling — when they fail, they take both functions offline. Local contractors diagnose and repair heat pump systems across Springfield and Robertson County year-round.
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.
Heat Pump Problems We Fix
Common heat pump failures include reversing valve problems that prevent the system from switching between heating and cooling modes, refrigerant leaks, defrost board failures that cause ice buildup on the outdoor unit, compressor issues, and auxiliary heat problems. Heat pump diagnostics require specialized knowledge of the refrigerant cycle in both directions.
System runs constantly but never quite reaches the set temperature
This often points to a refrigerant or airflow issue rather than a thermostat problem — a technician can check charge levels and airflow before assuming the system itself is undersized.
Outdoor unit is covered in ice, even when it's not especially cold out
Some frost during a normal defrost cycle is expected, but heavy ongoing ice buildup usually means the defrost cycle isn't completing correctly or airflow is restricted.
Noticeably higher electric bills with no change in usage habits
A system working harder than it should to hit the same comfort level is a common early sign of a developing mechanical issue, often before anything sounds or feels obviously wrong.
Heat Pump vs. Furnace in Middle Tennessee
In Middle Tennessee's climate, heat pumps are efficient down to certain outdoor temperatures, after which auxiliary or emergency heat takes over. If your heat pump is running but not keeping up in cold weather, the issue may be with the auxiliary heat source rather than the heat pump itself. The technician checks the full system.
- A summer repair does not verify the heating side. The reversing valve, defrost control, and auxiliary heat are not exercised in cooling mode and can only be tested under heating conditions.
- A heating repair does not confirm the cooling side either, for the same reason in reverse.
- Repair restores the equipment's rated capacity; it does not compensate for ductwork or insulation that limits what reaches the rooms.
- Auxiliary heat operating on the coldest nights is designed behaviour, not a defect to be repaired out of the system.
- Because both modes run through the same equipment, a fault deferred in one season is usually still waiting in the next, which is the practical argument for testing both modes at a single visit.
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.