Heat Pump Payback in Forney, TX
Is a heat pump worth it in Forney?
Forney technically pencils out, but only past the point the equipment would need replacing anyway. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $5,500. Forney's residents would see roughly $336 a year back in running costs, putting the payback around 16.4 years. Forney's own numbers say this pencils out only in theory, not in practice.
Not the city you meant?
This runs the same numbers for 3206 US cities, not just Forney. Look one up here.
The climate behind Forney's payback figure
Forney has a mild winter by US standards, 1826 heating degree days a year against a 65°F base, and summers are severe enough that cooling can dominate the annual bill, at 2966 cooling degree days. The 99% winter design temperature here, the cold snap equipment must be sized for, not the seasonal average, is 14°F, and the coldest daily reading in the 2024 station record was 10.4°F. That puts the seasonal coefficient of performance at 3.04 for the recommended cold-climate unit. The average winter here is gentle, but sizing follows the cold snaps, and 14°F is below the 25°F point where a standard unit leans on resistance backup, so a cold-climate unit is what gets priced for Forney. These numbers come from Mesquite Metropolitan Airport, the closest NOAA station, 4.5 miles out.
The yearly running costs in Forney
A 2000-square-foot house here would pull roughly 1,521 heating kilowatt-hours annually on top of cooling, totalling about $654 a year on electricity. That compares with roughly 19 Mcf a year of gas at Forney's $19.42 per-Mcf rate, about $990 a year with the old AC included, against a local electricity rate of 16.15¢/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 $459 behind.
The break-even point in Forney
This result holds unless electricity climbs above 179.4¢/kWh (it is 16.15¢ now) or gas drops below $1.75 per Mcf (now $19.42); past either point, gas becomes the cheaper fuel in Forney. When quotes arrive, compare the heat pump price with a like-for-like furnace and AC replacement: at $336 a year saved, a difference under $2,352 pays back within 7 years here, and under $3,360 within 10.
The other scenario: no gas furnace to begin with
Plenty of homes in Forney heat with electricity alone, no gas line involved. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. Switching saves about $713 a year here, a heat pump moving heat rather than generating it needs far less electricity than resistance coils, so the extra $10,000 spent up front comes back in about 14 years.
Forney against the rest of the country
Forney lands at position 2525 out of 3206 cities on heating severity (coldest is 1), and 1074 out of 3206 by population size (biggest is 1). That's the mildest third of cities covered, where utility rates carry more of the answer than climate does.
What to do with this number in Forney
About 38,572 people live in Forney, Texas, 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.
Ask a local HVAC contractor for a quote before committing either way.
More on how this number was built
Nothing above is a black box: the methodology guide shows the full arithmetic behind Forney's 3.04 seasonal COP and payback figure. At a 14°F design temperature, Forney sits in cold-climate territory; the guide to that class of unit explains why.