Heat Pump Payback in Greenwood, SC
Will a heat pump pay off in Greenwood, SC?
In Greenwood, the extra upfront cost technically comes back, just not before the equipment wears out. $5,500 is what Greenwood would pay extra to go electric rather than replace the furnace and AC with the same again. That premium is recovered through $233 of lower running costs every year, landing the payback clock at roughly 23.6 years. That's a technicality, not a recommendation, for anyone actually living in Greenwood.
Not the city you meant?
This runs the same numbers for 3206 US cities, not just Greenwood. Look one up here.
Greenwood's weather, in the numbers that matter
2638 heating degree days pile up here every year, so Greenwood has a mild winter by US standards; the cooling side runs to 1657 cooling degree days, where summers are hot enough that cooling matters as much as heating. 16°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of 9°F in the 2024 station record. Worked through the model, that's a seasonal COP of 3.08 on the cold-climate unit fit for this climate. Mild on average, but the occasional cold snap is what sizes the equipment: at a 16°F design temperature Greenwood 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. Climate figures trace to the nearest NOAA station, Greenwood County Airport, 3.7 miles from Greenwood.
What it actually costs to run, year to year
Modelled on a typical 2000-square-foot house, the heat pump draws about 2,169 kWh a year to keep it warm, plus cooling, for a combined electric bill near $579 a year. That compares with roughly 27 Mcf a year of gas at Greenwood's $16.91 per-Mcf rate, about $812 a year with the old AC included, against a local electricity rate of 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 $2,007 behind.
How sensitive Greenwood's result is to prices
Gas would only overtake the heat pump in Greenwood if electricity rose past 32.4¢/kWh from 16.16¢, or gas fell under $8.44 per Mcf from $16.91. A useful quote test for Greenwood: the heat pump is worth it within a decade if it costs less than $2,330 more than replacing the furnace and AC, and within 7 years if the gap is under $1,631.
If your home heats with electric baseboard instead of gas
Not every home in Greenwood has gas service. Swap the comparison to resistance heat instead of gas, and Greenwood's answer improves. About $848 a year comes back this way, enough that the 11.8-year payback clears the $10,000 premium comfortably within the equipment's life.
How Greenwood compares nationally
Ranked against the other 3206 cities covered, Greenwood comes in at 2073 for heating severity, 1 would be the coldest place in the dataset, and 1738 by population, where 1 is largest. That's the middle third for winter severity among the cities covered here.
Next step if you live in Greenwood
Greenwood, South Carolina is home to about 22,667 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 Greenwood, 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
The methodology guide walks through exactly how Greenwood's 3.08 seasonal COP and the rest of this page's numbers get built. Greenwood's 16°F design temperature is below the 25°F line, which is why a cold-climate unit is the right call here, see what that changes in the cold-climate unit guide.