HVAC Replacement Cost in South Carolina

Estimated $9,438 – $14,762

Itemized cost breakdown
Item	Estimate
Outdoor condenser unit	$3,904
Furnace / heating unit	$2,112
Evaporator coil / air handler	$1,428
Refrigerant lineset & connections	$644
Installation labor	$3,276
Permit, disposal & startup	$736
Subtotal	$12,100

What affects hvac replacement cost in South Carolina

HVAC Replacement costs in South Carolina differ from the national baseline mainly because of local labor rates. Local construction-trades wages in South Carolina run about 16% below the national average (BLS Carpenters series, used here as a disclosed proxy for HVAC mechanics), holding installation cost down. South Carolina's Low Country heat and heavy humidity make latent cooling load the focus; a right-sized high-SEER2 system with strong dehumidification avoids the clammy short-cycling that oversizing causes here. Most South Carolina jurisdictions require a permit for HVAC/mechanical replacement, with condensate, gas, and electrical inspection; typical residential fees run $75–$250, usually with a final inspection. South Carolina applies a 6.00% state sales tax (about 7.49% combined with local) to HVAC equipment.