Heat Pump Payback in Beaufort, SC
Heat pump vs. gas furnace in Beaufort, SC
In Beaufort, the math is close enough that it comes down to how long you plan to stay. $3,000 is what Beaufort would pay extra to go electric rather than replace the furnace and AC with the same again. Lower bills claw that back: about $267 saved annually, for a payback of roughly 11.3 years. It's a genuine toss-up here, Beaufort's numbers don't point clearly either way.
Checking a different city
Beaufort is one of 3206 cities covered here, each run through the same model. Search another below.
How cold Beaufort actually gets
Degree days tell the story here: Beaufort racks up 1398 heating degree days each year (base 65°F), and summers are severe enough that cooling can dominate the annual bill, with 2992 cooling degree days on the cooling side. 25°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of 23°F in the 2024 station record. Worked through the model, that's a seasonal COP of 2.95 on the standard unit fit for this climate. Beaufort's winters don't get cold enough to need the cold-climate premium, a standard unit holds up fine. Source: NOAA station Beaufort McAs, 1.8 miles from Beaufort, the closest one on record.
What it actually costs to run, year to year
Modelled on a typical 2000-square-foot house, the heat pump draws about 1,200 kWh a year to keep it warm, plus cooling, for a combined electric bill near $606 a year. Beaufort's gas rate of $16.91 per Mcf, applied to the 15 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $873 a year, against 16.16¢ per kWh for electricity. If the current system still worked and you replaced it anyway, the full cost would take longer than the 15-year equipment life to earn back; against buying a new furnace and AC regardless, the 15-year total lands $1,000 ahead.
What would change Beaufort's answer
In Beaufort the cooling savings outweigh the extra electricity for heating, so no plausible change in the electricity rate would make the old furnace and AC cheaper to run. A useful quote test for Beaufort: the heat pump is worth it within a decade if it costs less than $2,670 more than replacing the furnace and AC, and within 7 years if the gap is under $1,869.
If your home heats with electric baseboard instead of gas
Gas isn't universal in Beaufort, many houses run on electric heat already. Against electric-resistance heat, baseboard or an electric furnace, both 100% efficient but still just resistance, the case for switching gets stronger here. The saving here runs about $593 a year, which recovers the extra $7,500 spent going electric in roughly 12.7 years.
Where Beaufort ranks in this dataset
Ranked against the other 3206 cities covered, Beaufort comes in at 2726 for heating severity, 1 would be the coldest place in the dataset, and 2470 by population, where 1 is largest. That's the mildest third of cities covered, where utility rates carry more of the answer than climate does.
Deciding what's next in Beaufort, SC
Beaufort, South Carolina is home to about 14,334 people, and the figures above are the same ones a local HVAC contractor uses to size and quote a system, this site doesn't guess where a real quote would land, it just tells you whether it's worth asking for one. In Beaufort, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
Reading further on this page's numbers
Nothing above is a black box: the methodology guide shows the full arithmetic behind Beaufort's 2.95 seasonal COP and payback figure. Homes in Beaufort without gas service should read the electric-resistance comparison instead, the numbers there differ from the gas case above.