HVAC Services in Charleston, SC
In a normal year, Charleston racks up 1,623 heating and 2,447 cooling degree days (NOAA 1991-2020 normals). Cooling carries most of the load, which is why compressors and condenser fan motors wear out faster here than in northern cities. On average, Charleston gets 6 freezing nights and 24 days above 90°F per year. For a 2,000 sq ft house, this climate points to a heating load somewhere near 35,000 BTU/h. Treat that as a starting number. A Manual J calculation will move it up or down based on insulation and windows.
Local Price Guide
| Service | Charleston estimate |
|---|---|
| AC Installation in Charleston | $5,200 to $11,800 |
| AC Repair in Charleston | $190 to $870 |
| Heat Pump Installation in Charleston | $6,800 to $16,800 |
| Heat Pump Repair in Charleston | $220 to $1,060 |
| HVAC System Replacement in Charleston | $10,600 to $23,000 |
| Ductless Mini-Split Installation in Charleston | $4,000 to $9,300 |
| Emergency HVAC Repair in Charleston | $310 to $1,240 |
| Furnace Replacement in Charleston | $3,400 to $8,200 |
| Furnace Repair in Charleston | $160 to $690 |
| HVAC Tune-Up & Maintenance in Charleston | $100 to $300 |
| Boiler Replacement in Charleston | $5,800 to $13,200 |
| Air Duct Cleaning in Charleston | $400 to $910 |
Homes in Charleston
Half the homes in Charleston were built before 1994 (Census ACS median), so the typical house is about 32 years old. Plenty of houses from this period still run original 1990s or early-2000s equipment, which is past its expected service life. Charleston has roughly 37,000 owner-occupied homes, or 55.6% of households. Homes here have a median value of $469,100 and households a median income of $90,038. Those two numbers drive the labor adjustment in our estimate.
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HVAC Costs in Cities Near Charleston
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