Heat pumps provide both heating and cooling — when they fail, they take both functions offline. Local contractors diagnose and repair heat pump systems across Ashland City and Cheatham County year-round.
Ashland City is the Cheatham County seat, sitting directly on the Cumberland River just downstream of the Cheatham Lock and Dam, which backs the river up into Cheatham Lake and shapes a good part of daily life in the area around fishing, boating, and a riverside downtown that floods occasionally in wet years. The town itself is small and its core is old -- courthouse-square era brick buildings and homes from the early-to-mid 1900s line the streets closest to the river -- while newer residential growth has spread out along the highways leading toward Clarksville and Nashville as Cheatham County has slowly filled in with commuters from both directions. Older homes near the river tend to have retrofitted ductwork squeezed into houses that were never originally designed to hold it, which creates airflow and sizing problems a straightforward equipment swap doesn't fix on its own. Cheatham County's mix of river-bottom humidity in summer and cold snaps funneling down the Cumberland valley in winter puts real demand on both sides of a home's HVAC system across the year.
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.