Heat Pump Payback in North Augusta, SC
Should North Augusta switch to a heat pump?
The payback math works in North Augusta on paper, past the equipment's own working life. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $5,500. North Augusta's residents would see roughly $263 a year back in running costs, putting the payback around 20.9 years. That's a technicality, not a recommendation, for anyone actually living in North Augusta.
Checking a different city
This runs the same numbers for 3206 US cities, not just North Augusta. Look one up here.
North Augusta's weather, in the numbers that matter
1770 heating degree days pile up here every year, so North Augusta has a mild winter by US standards; the cooling side runs to 2478 cooling degree days, where summers are hot enough that cooling matters as much as heating. The 99% winter design temperature here, the cold snap equipment must be sized for, not the seasonal average, is 21°F, and the coldest daily reading in the 2024 station record was 19°F. That puts the seasonal coefficient of performance at 3.2 for the recommended cold-climate unit. Mild on average, but the occasional cold snap is what sizes the equipment: at a 21°F design temperature North Augusta falls just under the 25°F line where a standard heat pump starts leaning on resistance backup, so the model prices a cold-climate unit to be safe. These numbers come from Daniel Field Airport, the closest NOAA station, 6.1 miles out.
The yearly running costs in North Augusta
Modelled on a typical 2000-square-foot house, the heat pump draws about 1,401 kWh a year to keep it warm, plus cooling, for a combined electric bill near $568 a year. The gas furnace it replaces burns roughly 18 Mcf a year at $16.91 per Mcf here, for a running cost near $831 a year including the old AC (electricity here runs 16.16¢/kWh). 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 $1,556 behind.
How sensitive North Augusta's result is to prices
Gas would only overtake the heat pump in North Augusta if electricity rose past 103.2¢/kWh from 16.16¢, or gas fell under $2.65 per Mcf from $16.91. A useful quote test for North Augusta: the heat pump is worth it within a decade if it costs less than $2,630 more than replacing the furnace and AC, and within 7 years if the gap is under $1,841.
If your home heats with electric baseboard instead of gas
Not every home in North Augusta has gas service. Swap the comparison to resistance heat instead of gas, and North Augusta's answer improves. About $675 a year comes back this way, enough that the 14.8-year payback clears the $10,000 premium comfortably within the equipment's life.
North Augusta against the rest of the country
Ranked against the other 3206 cities covered, North Augusta comes in at 2551 for heating severity, 1 would be the coldest place in the dataset, and 1516 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 North Augusta, SC
North Augusta, South Carolina is home to about 26,395 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 North Augusta, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
Reading further on this page's numbers
Every constant behind this page, the 3.2 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. North Augusta's 21°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.