Will a heat pump pay off in Lewisville, NC?
In Lewisville, 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. Lewisville's residents would see roughly $255 a year back in running costs, putting the payback around 13.7 years. Whether that's worth it in Lewisville depends on how many years you expect to own the place.
The climate behind Lewisville's payback figure
2829 heating degree days pile up here every year, so Lewisville has a mild winter by US standards; the cooling side runs to 1704 cooling degree days, where summers are hot enough that cooling matters as much as heating. 18°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 15.1°F on file. Worked through the model, that's a seasonal COP of 3.13 on the cold-climate unit fit for this climate. A cold-climate unit is the right call in Lewisville — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. These numbers come from SMITH REYNOLDS AIRPORT, the closest NOAA station, 11.5 miles out.
The month-to-month numbers for Lewisville
A 2000-square-foot house here would pull roughly 2,289 heating kilowatt-hours annually on top of cooling, totalling about $559 a year on electricity. Lewisville's gas rate of 16.42 per Mcf, applied to the 29 Mcf a year the furnace burns, puts its running cost near $813 a year, against 14.93¢ per kWh for electricity. Buy it outright, not incrementally, and payback stretches to 53 years; over 15 years the net position sits $323 ahead.
If your home heats with electric baseboard instead of gas
Not every home in Lewisville has gas service. 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 $841 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 9.5 years.
Lewisville against the rest of the country
Among 3206 cities, Lewisville's winter puts it at rank 1980 for severity, while its size puts it at rank 2489 for population — 1 in both cases being the extreme. That's the middle third for winter severity among the cities covered here.
What to do with this number in Lewisville
About 14,203 people live in Lewisville, North Carolina, and every number on this page is what a contractor would actually work from when quoting a system here — the point isn't to replace that quote, it's to tell you whether to bother asking for one. Here, there's no cost penalty to waiting until your current furnace or AC actually needs replacing.
Line up a few local HVAC quotes before you decide.
Reading further on this page's numbers
Nothing above is a black box: the methodology guide shows the full arithmetic behind Lewisville's 3.13 seasonal COP and payback figure. Lewisville's 18°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.