Heat pump vs. gas furnace in Beaufort, SC
In Beaufort, a heat pump pays for itself within a reasonable window. $1,000 is what Beaufort would pay extra to go electric rather than replace the furnace and AC with the same again, once the $2,000 federal credit is applied. Lower bills claw that back: about $267 saved annually, for a payback of roughly 3.8 years. The window here is reasonable, and it's specific to what Beaufort actually pays for power and gas.
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 record low of 23°F on file. 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 its running cost near $873 a year, against 16.16¢ per kWh for electricity. Looked at as a full purchase rather than an incremental one, payback here is roughly 41.3 years, leaving the 15-year total $3,000 ahead.
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 $5,500 spent going electric in roughly 9.3 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. Given the math above, Beaufort is a place worth lining up quotes ahead of a breakdown, not waiting for one.
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. The $2,000 federal credit baked into Beaufort's number is explained, with the before-and-after math, in the tax credit guide.