Heat pump vs. gas furnace in Rolesville, NC
In Rolesville, the math is close enough that it comes down to how long you plan to stay. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $3,500 after a $2,000 federal tax credit. Lower bills claw that back: about $243 saved annually, for a payback of roughly 14.4 years. It's a genuine toss-up here — Rolesville's numbers don't point clearly either way.
Rolesville's weather, in the numbers that matter
3108 heating degree days pile up here every year, so Rolesville has a real but manageable winter; the cooling side runs to 1338 cooling degree days, where summers are hot enough that cooling matters as much as heating. 17.6°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 14°F on file. Worked through the model, that's a seasonal COP of 3.12 on the cold-climate unit fit for this climate. A cold-climate unit is the right call in Rolesville — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. Source: NOAA station FRANKLIN COUNTY AIRPORT, 10.5 miles from Rolesville — the closest one on record.
The month-to-month numbers for Rolesville
Modelled on a typical 2000-square-foot house, the heat pump draws about 2,522 kWh a year to keep it warm, plus cooling, for a combined electric bill near $547 a year. The gas furnace it replaces burns roughly 32 Mcf a year at 16.42 per Mcf here, for a running cost near $790 a year (electricity here runs 14.93¢/kWh). Buy it outright, not incrementally, and payback stretches to 55.4 years; over 15 years the net position sits $152 ahead.
If your home heats with electric baseboard instead of gas
Plenty of homes in Rolesville heat with electricity alone, no gas line involved. Against electric-resistance heat — baseboard or an electric furnace, both 100% efficient but still just resistance — the case for switching gets stronger here. Switching saves about $887 a year here — a heat pump moving heat rather than generating it needs far less electricity than resistance coils — so the extra $8,000 spent up front comes back in about 9 years.
Rolesville against the rest of the country
Rolesville lands at position 1875 out of 3206 cities on heating severity (coldest is 1), and 2830 out of 3206 by population size (biggest is 1). That's the middle third for winter severity among the cities covered here.
Next step for 11,854 people in Rolesville
Rolesville, North Carolina is home to about 11,854 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 Rolesville, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
Where Rolesville's figure comes from
The methodology guide walks through exactly how Rolesville's 3.12 seasonal COP and the rest of this page's numbers get built. Rolesville's 17.6°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.