Heat pump South Carolina

Heat pump vs gas heating cost in South Carolina

$112 a year saved by heating a typical South Carolina home with a heat pump instead of a gas furnace.

A typical home here burns about 225 therms of gas a year for heat, about $383 at the national average of $1.70/therm. A heat pump would use about 1,752 kWh instead, $271 at 15.47¢/kWh. Electricity would have to pass 21.8¢/kWh before gas became the cheaper way to heat.

Prices updated October 2026 from EIA, AAA and BLS data.

How South Carolina compares

Ranked by yearly saving against gas, South Carolina is 18th of 51. At U.S. average figures a heat pump saves $27 a year. South Carolina has the 20th cheapest residential electricity of the 50 states and DC, near the middle, at 15.47¢/kWh, 16% below the U.S. average of 18.31¢.

Winters here are mild, with an estimated 2,500 heating degree days a year, so the calculator uses a seasonal COP of 3.2: each kWh of electricity delivers 3.2 kWh of heat.

Against propane the heat pump saves $349 a year, against heating oil it saves $668 a year, and against electric baseboard heat it saves $596 a year.

Heating now	Now, per year	Heat pump	Difference
Natural gas furnace	$383	$271	$112
Propane furnace	$620	$271	$349
Oil furnace	$939	$272	$668
Electric baseboard	$867	$271	$596

One of its two neighbors does better against gas: North Carolina at $159 a year saved.

State	Electricity	Saving vs gas a year
North Carolina	15.16¢	$159
South Carolina	15.47¢	$112
Georgia	16.27¢	$98

More for South Carolina

EV charging cost in South Carolina vs gas: an EV saves $1,181 a year on fuel.
Solar payback in South Carolina: a typical system pays back in 13.6 years.

What these numbers assume

A heating load estimated from about 2,500 heating degree days a year: 225 therms of gas, 246 gallons of propane, 173 gallons of oil or 5,605 kWh of baseboard heat.
Natural gas at $1.70/therm, the U.S. city average for September 2026. Gas prices vary a lot by state and utility, so enter the price per therm from your bill.
Propane at $2.52 and heating oil at $5.43 a gallon, EIA forecasts for winter 2026–27.
Furnaces 85% efficient (oil 80%), and a heat pump with a seasonal COP of 3.2.
No federal tax credit: Section 25C ended for equipment placed in service after December 31, 2025.

Change any of them in the calculator above to match your own bills. The formulas are on the main heat pump calculator.

Sources

Electricity price: EIA Electric Power Monthly, Table 5.6.A (July 2026 data).
Natural gas: BLS U.S. city average, September 2026.
Propane and heating oil: EIA Short-Term Energy Outlook winter forecast, October 2026.
Heating degree days: MeterMath rounded estimate for the state.
Tax credit status: Public Law 119-21.