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A heat pump repair call here starts with the refrigerant circuit and the reversing valve, because those parts absorb the bulk of the cold-weather load in a compressed stretch of the calendar. Homes in Lexington County, SC run heat about five months a year, from November through March. Outdoor temperatures during that period push a heat pump's capacity down, which means the compressor cycles harder and more often to hold indoor setpoints. Contactor wear and refrigerant charge drift show up faster under that kind of demand than they do in a longer, milder heating run. A contractor diagnosing a unit in this county prices the refrigerant side before anything else.
Ductwork and wiring put in for one generation of equipment get asked to carry the next. Half the homes in Lexington County, South Carolina were built in 1993 or earlier (2020-2024 ACS 5-year). That history shows up inside the system once a contractor opens it: refrigerant line sets, disconnect boxes, and branch wiring that were sized for something earlier and then left in place when the equipment changed. A contractor repairing a heat pump here checks those upstream components, because a failed part can be swapped and the repair still fall short if what feeds the unit was undersized before the current system went in.
The Parts of a Heat Pump a Contractor Checks First
The outdoor unit is usually the first thing a homeowner notices, and it is where a contractor starts. It houses the compressor, which moves refrigerant through the system, and the condenser coil, which releases or absorbs heat depending on the season. When either of those fails, the whole system feels it.
Inside the house, the air handler holds the evaporator coil and the blower that moves conditioned air into the living space. The refrigerant lines connecting the two units and the reversing valve that switches the system between heating and cooling are also common places a contractor looks when something is off.
The drawing shows a typical heat pump layout, and a licensed contractor determines what applies to your specific home.
Get matched in Lexington CountyLexington County, by the numbers
434 severe weather events were recorded in Lexington County, South Carolina between 2015 and 2024.
NOAA National Centers for Environmental Information, Storm Events Database, bulk CSV export, events 2015-01-01 through 2024-12-31.Half the homes in Lexington County, South Carolina were built in 1993 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesLexington County, South Carolina holds 132,916 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 77.4% of the occupied homes in Lexington County, South Carolina (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Covering Heat Pump Repair in Lexington County, South Carolina1 sourced rules and standards
Licensing Rules for HVAC Repair in Lexington County, South Carolina
South Carolina requires a mechanical contractor license for contracting work whose total cost of construction is greater than ten thousand dollars.
Storm and Severe Weather Events in Lexington County
South Carolina's climate puts real stress on heat pump systems, and local weather history is part of what shapes how hard that equipment works. Repair needs in Lexington County track the conditions the equipment has had to handle.
434 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.