Tell us about the job
Takes about a minute. No obligation.
A contractor diagnosing a heat pump here starts with the refrigerant circuit and the reversing valve before anything else, because those are the parts that carry the heating load. Homes in McCormick County, SC run heat about five months a year, from November through March. By March, a valve that was already marginal at the start of the season has cycled through enough cold nights that it shows up clearly in the pressures. Refrigerant charge and coil condition follow. A system that makes it through November and December without complaint can still surface a compressor problem by February, when cumulative wear on the starting components finally crosses a line.
Heat pump systems running in this county are rarely on their first cycle through a house. Half the homes in McCormick County, South Carolina were built in 1987 or earlier (2020-2024 ACS 5-year). Stock that old has seen at least one round of equipment replacement, which means what a contractor opens is a unit installed years after the house was framed, living on whatever electrical and refrigerant line set the previous owner left behind. The repair diagnosis turns on the unit itself: the capacitors, contactors, and coil condition that reflect how that specific system was maintained, not how old the walls are.
The Parts of a Heat Pump a Contractor Checks First
The outdoor unit sits on a pad beside the house and holds the compressor and condenser coil. These are where a contractor starts when a heat pump stops moving heat properly. A failed compressor, a refrigerant leak at the coil, or a seized fan motor in that cabinet are the pieces most often behind a loss of heating or cooling.
Inside the house, the air handler holds the evaporator coil and the blower. The coil can freeze or leak, and the blower motor can fail or slow down, both of which show up as weak airflow or a system that runs but does not condition the air. The reversing valve, which sits in the outdoor unit, is what lets the system switch between heating and cooling, and a stuck valve is a common repair call on its own.
The drawing shows the general layout of a heat pump system, and a licensed contractor determines which components apply to your specific house and situation.
Get matched in McCormick CountyMcCormick County, by the record
76 severe weather events were recorded in McCormick 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 McCormick County, South Carolina were built in 1987 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesMcCormick County, South Carolina holds 5,675 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 87.9% of the occupied homes in McCormick County, South Carolina (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesRules & Standards Behind Heat Pump Repair in McCormick County, South Carolina1 sourced rules and standards
Licensing Rules for HVAC Repair in McCormick County, South Carolina
South Carolina requires a mechanical contractor license for contracting work whose total cost of construction is greater than ten thousand dollars.
Severe Weather Events in McCormick County
Extreme weather puts heat pumps under sustained stress, and the repair picture in any area follows the weather that area actually sees. That connection makes storm history a local fact, not a general one.
76 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.