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Sizing a heat pump for Florence County means working out what the system has to deliver on the coldest nights, not just across mild weather. Homes in Florence County, SC run heat about five months a year, from November through March. A heat pump loses capacity as outdoor temperatures fall, so the coldest weeks of that window are what drive the sizing decision, not the comfortable ones in the middle. A contractor has to calculate the building's heat loss at the low end of the local temperature range before they can specify a unit or decide whether backup heat is needed, and an install that skips that step leaves the homeowner with a system that runs at its limit when the house needs it most.
Ductwork laid out for an earlier generation of equipment often does not move air the way a heat pump needs it to. Half the homes in Florence County, South Carolina were built in 1986 or earlier (2020-2024 ACS 5-year). That gap between what the house was built to carry and what a new system demands is where a Florence County heat pump installation gets decided. A contractor has to trace what is already in the walls and attic, check whether the runs and returns match the new unit's requirements, and price the duct work accordingly before the equipment cost is even on the table.
What Gets Installed With a New Heat Pump
The outdoor unit sits on a pad beside the house and holds the compressor and the condenser coil. It is the largest piece a homeowner sees from the yard. Inside, an air handler mounts in a utility closet, attic, or basement and moves conditioned air through the home.
A refrigerant line set runs between the outdoor unit and the air handler, carrying refrigerant between the two. A thermostat goes on an interior wall and gives the homeowner control over the whole system. Some installations also include a disconnect box mounted near the outdoor unit.
The drawing shows a representative layout, and a licensed contractor determines exactly what applies to your house.
Get matched in Florence CountyFlorence County, by the numbers
120 severe weather events were recorded in Florence 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 Florence County, South Carolina were built in 1986 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesFlorence County, South Carolina holds 62,090 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 64.5% of the occupied homes in Florence County, South Carolina (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes and Standards Governing Heat Pump Installation in Florence County, South Carolina1 sourced rules and standards
Contractor Rules for Florence 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 Florence County
Florence County's climate puts real demands on heating and cooling equipment, and those demands vary with what the weather actually does here. A heat pump sized and installed for local conditions handles that load better than one specified for somewhere else.
120 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.