ComfortCostGuide

State cost guide

South Carolina: HVAC Replacement Cost Calculator

Replacing an HVAC system in South Carolina typically runs $6,000 to $12,000 installed for a heat pump, or $4,000 to $7,500 if you're only swapping out a central air conditioner. Labor here runs about 13% below the national average, with HVAC technicians earning around $27.14 an hour, which keeps installed prices lower than in much of the country. Use the calculator below to narrow the range for your home size and system type.

Worked example

Take a 1,900-square-foot single-story home outside Columbia with an aging 14-year-old heat pump and ductwork that's still in good shape. Because South Carolina sits in climate zone 3 with mild winters and long, humid cooling seasons, a straight heat pump replacement is the usual choice here rather than adding a gas furnace. A standard-efficiency 3-ton heat pump on existing ducts would land in the lower-middle of the $6,000 to $12,000 range, roughly $7,500 to $8,500 installed. Pushing into the top of that range usually means a variable-speed system, a larger tonnage, or duct repairs and electrical work discovered during the install.

Frequently asked questions

Is a heat pump or an AC-and-furnace system a better value in South Carolina?

South Carolina's climate zone 3 winters are mild enough that a heat pump handles heating without much backup, and at $6,000 to $12,000 installed it usually costs less than the $7,500 to $13,000 range for a matched AC-and-gas-furnace system. If your home already has natural gas and a working gas line, replacing just the AC at $4,000 to $7,500 or just the furnace at $3,500 to $7,000 can be the cheaper path. Heat pumps are the more common replacement choice statewide.

How much does it cost to replace just the air conditioner in South Carolina?

A central AC replacement runs $4,000 to $7,500 installed in South Carolina, assuming your ductwork and indoor coil or air handler are in usable condition. The low end reflects a basic single-stage unit in an easily accessible home; the high end covers larger tonnage, higher SEER2 ratings, or homes needing a new coil and line set.

Why is HVAC installation cheaper in South Carolina than the national average?

Labor costs here index at 0.87, or about 13% below the national average, with HVAC technicians earning roughly $27.14 per hour. Since labor is typically a third or more of a full system replacement, that difference shows up directly in your quoted price. Equipment costs, however, are set nationally and don't vary much by state.

What do ductless mini splits cost in South Carolina?

Ductless mini splits run $3,500 to $10,000 installed in South Carolina. A single-zone unit for a converted garage, sunroom, or bonus room sits near the bottom of that range, while a multi-zone system covering several rooms of a home without ductwork pushes toward $10,000. They're a common fix for older South Carolina homes where adding ductwork isn't practical.

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