Gas Furnace in Charleston — $105/yr to Run (14.6¢/kWh)
Your gas furnace in Charleston costs about $9/month at 14.6¢/kWh. See daily, monthly, and yearly costs, plus tips to cut your bill.
Charleston, SC Electricity Rate
14.6¢/kWh
Utility: Duke Energy Carolinas
+12% vs national avg
National avg: 13.0¢/kWh
Daily Cost
$0.70
4.8 kWh/day
Monthly Cost
$8.75
60 kWh/mo
Annual Cost
$105
720 kWh/yr
Lifetime (20yr)
$2,101
energy only
Monthly Cost Breakdown in Charleston
| Period | kWh | Charleston Cost | National Avg | Difference |
|---|---|---|---|---|
| Daily | 4.8 | $0.70 | $0.62 | +$0.08 |
| Weekly | 33.6 | $4.90 | $4.37 | +$0.53 |
| Monthly | 60.0 | $8.75 | $7.80 | +$0.95 |
| Quarterly | 180.0 | $26.26 | $23.40 | +$2.86 |
| Annual | 720.0 | $105.05 | $93.60 | +$11.45 |
Customize Your Gas Furnace Cost
Adjust usage hours and electricity rate to calculate your exact cost in Charleston.
Daily
$0.70
Monthly
$8.75
Annual
$105
20-Year
$2,101
Energy Saving Tips for Gas Furnace in Charleston
- ✓Charleston electricity rates are 12% above the national average — energy efficiency matters more here.
- ✓An ENERGY STAR Gas Furnace in Charleston saves ~$16/year compared to standard models.
- ✓A smart Gas Furnace with scheduling optimization can save ~$16/year at Charleston rates.
- ✓Charleston's warm climate (avg 66.2°F) means higher cooling costs — consider ceiling fans to supplement.
- ✓Replace air filter every 3 months
- ✓Seal ductwork leaks
ENERGY STAR Savings: Upgrading to an ENERGY STAR Gas Furnace in Charleston saves approximately $16/year at local rates — $315 over the appliance lifetime.
Highest-Cost Appliances in Charleston, SC
See which appliances cost the most to run at Charleston's 14.6¢/kWh electricity rate.
Level 2 EV Charger (240V)
Transportation · 7,200W
$1,891/yr
$157.57/mo
Electric Furnace
HVAC · 10,000W
$1,313/yr
$109.42/mo
Electric Tankless Water Heater
Water Heating · 18,000W
$959/yr
$79.88/mo
EV Charger (Level 2)
Garage · 7,200W
$945/yr
$78.79/mo
Boiler (Electric)
HVAC · 6,000W
$788/yr
$65.66/mo
Electric Water Heater (Tank)
Water Heating · 4,500W
$719/yr
$59.91/mo
Water Heater (Tank Electric)
Water Heating · 4,500W
$719/yr
$59.91/mo
Heat Pump
HVAC · 2,400W
$560/yr
$46.69/mo
Gas Furnace Cost in Other South Carolina Cities
| City | Rate | Annual Cost | vs Charleston |
|---|---|---|---|
| Charleston (current) | 14.6¢ | $105 | — |
| Columbia | 13.4¢ | $97 | $-8 |
| North Charleston | 13.6¢ | $98 | $-7 |
| Mount Pleasant | 13.0¢ | $94 | $-11 |
| Rock Hill | 11.7¢ | $84 | $-21 |
| Greenville | 15.0¢ | $108 | +$3 |
| Summerville | 14.4¢ | $104 | $-1 |
Gas Furnace Energy Cost FAQ — Charleston, SC
Understanding Gas Furnace Energy Costs in Charleston, SC
Charleston is a mid-sized South Carolina city where residential electricity rates from Duke Energy Carolinas are shaped by regional energy supply and local demand patterns. Running a moderate-draw appliance like the Gas Furnace (600W) at Charleston's rate of 14.6¢/kWh costs approximately $105 per year — $11 more than the national average of $94.
Charleston rates are 12% above the national average — a modest premium that adds $11 per year to Gas Furnace operating costs. Over the appliance's 20-year lifespan, that's $229 in cumulative extra spending versus the national average.
With a cost of living index of 97, Charleston is near the national median. The Gas Furnace's monthly cost of $8.75 represents a typical share of the average Charleston electric bill of $157/month. Upgrading to an ENERGY STAR Gas Furnace can cut energy use by up to 15%, saving approximately $16 per year at Charleston rates.
Charleston's moderate climate (avg 66.2°F) helps keep seasonal energy cost swings manageable for most appliances. A Gas Furnace produces approximately 3.2 tons of CO2 annually at typical usage. Charleston residents can reduce this footprint by choosing an ENERGY STAR certified unit, optimizing usage patterns, or investing in solar — see our solar savings calculator for Charleston.
Compare All Energy Costs in Charleston
See energy costs for 178+ household appliances at Charleston's local electricity rate.
Frequently Asked Questions
How much does it cost to run a Gas Furnace in Charleston, SC?
At Charleston's average electricity rate of 14.6¢/kWh, a Gas Furnace costs approximately $105 per year to run. That's about $8.75 per month with typical usage of 8 hours per day.
What is the electricity rate in Charleston, SC?
The average residential electricity rate in Charleston, SC is 14.6¢/kWh, which is 12% above the national average of 13.0¢/kWh. The primary utility provider is Duke Energy Carolinas.
How much electricity does a Gas Furnace use per year?
A Gas Furnace uses approximately 600 watts and consumes about 720 kWh per year with typical usage of 8 hours/day for 150 days/year.
Is a Gas Furnace expensive to run in Charleston?
Compared to the national average cost of $94/year, running a Gas Furnace in Charleston costs $11 more per year due to higher local electricity rates.
How can I reduce my Gas Furnace energy cost in Charleston?
To reduce Gas Furnace costs in Charleston: Replace air filter every 3 months. Seal ductwork leaks. Upgrading to an ENERGY STAR model saves up to 15% on energy costs. Also check with Duke Energy Carolinas for local energy efficiency rebates and programs.