Heat Pump vs. Furnace for Pee Dee Winters — Which Wins?

The Quick Answer

For most homes in Florence, Darlington, Hartsville, Lake City, and Marion: heat pump. SC winters are mild enough that heat pumps run efficiently. They double as your AC in summer (one system, two seasons). And electricity is the practical fuel here — natural gas isn’t available in many Pee Dee neighborhoods.

How a Heat Pump Works (Briefly)

A heat pump is essentially a reversible AC. In summer, it pulls heat out of your house and dumps it outside. In winter, it pulls heat out of outdoor air (yes — even cold air has heat) and dumps it inside. It’s 2–3× more efficient than electric resistance heat (which is what cheap furnaces use).

Heat Pump: Pros

• One system handles both heating and cooling — lower install cost vs. separate AC + furnace
• 2–3× more efficient than electric resistance heat in temps above 30°
• No combustion — no gas leaks, no carbon monoxide risk
• Lower operating cost in mild SC winters compared to electric furnace
• Federal tax credits for high-efficiency heat pumps (up to $2,000 through 2032)

Heat Pump: Cons

• Less efficient below 30° — in extended cold snaps, the backup electric heat strips kick on (more expensive)
• Slightly cooler air at the vent — heat pump air feels 90–100°, gas furnace air feels 110–120°. Some people prefer the “warmer” feel of gas
• Outdoor unit runs year-round — can be noisier in winter than a gas furnace

Gas Furnace: Pros

• Hotter air at the vent — feels warmer faster
• Reliable below freezing — performance doesn’t degrade with cold
• Cheaper to run if you have natural gas — propane is a different story (more expensive than electricity in SC)

Gas Furnace: Cons

• You need a separate AC for summer — two systems to install and maintain
• Many Pee Dee neighborhoods don’t have natural gas — propane delivery is the only option, and propane prices fluctuate
• Combustion risks — annual heat exchanger inspection is non-negotiable for safety

Dual Fuel: Best of Both

For homes that already have a gas line, a “dual fuel” or “hybrid” system uses a heat pump for mild weather (above 35°) and switches to gas furnace for cold snaps. Best operating cost in SC, but most expensive upfront — usually $3,000–$5,000 more than a pure heat pump. Worth it for high-square-footage homes with existing gas service.

Operating Cost Estimates (Florence, 2,000 sqft Home)

• Heat pump (16 SEER / 9 HSPF): $480–$650/year for heating
• Electric furnace + central AC: $1,100–$1,400/year for heating
• Natural gas furnace (where available) + central AC: $400–$550/year for heating
• Propane furnace + central AC: $900–$1,200/year for heating
• Dual fuel (heat pump + gas): $350–$500/year for heating

Want a specific recommendation for your home? Call (843) 799-5478 for a free in-home consultation. We’ll do the heat-load calculation and quote three options so you can compare.