Heat Pump Payback in Johns Creek, GA
Will a heat pump pay off in Johns Creek, GA?
Johns Creek 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. Lower bills claw that back: about $344 saved annually, for a payback of roughly 16 years. Johns Creek's own numbers say this pencils out only in theory, not in practice.
Compare against another city
Johns Creek is one of 3206 cities covered here, each run through the same model. Search another below.
The climate behind Johns Creek's payback figure
Johns Creek has a mild winter by US standards, 2569 heating degree days a year against a 65°F base, and summers are hot enough that cooling matters as much as heating, at 1846 cooling degree days. 12°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of 10.9°F in the 2024 station record. Worked through the model, that's a seasonal COP of 2.99 on the cold-climate unit fit for this climate. The average winter here is gentle, but sizing follows the cold snaps, and 12°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 Johns Creek. Climate figures trace to the nearest NOAA station, Dekalb-Peachtree Airport, 12.3 miles from Johns Creek.
What it actually costs to run, year to year
A 2000-square-foot house here would pull roughly 2,176 heating kilowatt-hours annually on top of cooling, totalling about $559 a year on electricity. The gas furnace it replaces burns roughly 27 Mcf a year at $20.42 per Mcf here, for a running cost near $903 a year including the old AC (electricity here runs 14.90¢/kWh). Priced as a standalone purchase, with a working furnace ripped out early, payback would take longer than the 15-year equipment life. Measured against the like-for-like replacement instead, a household here ends 15 years $338 behind.
What would change Johns Creek's answer
This result holds unless electricity climbs above 40.3¢/kWh (it is 14.90¢ now) or gas drops below $7.56 per Mcf (now $20.42); past either point, gas becomes the cheaper fuel in Johns Creek. When quotes arrive, compare the heat pump price with a like-for-like furnace and AC replacement: at $344 a year saved, a difference under $2,408 pays back within 7 years here, and under $3,440 within 10.
Electric resistance heat in Johns Creek, compared
Gas isn't universal in Johns Creek, many houses run on electric heat already. Against electric-resistance heat, baseboard or an electric furnace, both 100% efficient but still just resistance, the case for switching gets stronger here. The saving here runs about $767 a year, which recovers the extra $10,000 spent going electric in roughly 13 years.
How Johns Creek compares nationally
Johns Creek lands at position 2104 out of 3206 cities on heating severity (coldest is 1), and 455 out of 3206 by population size (biggest is 1). That's the middle third for winter severity among the cities covered here.
What to do with this number in Johns Creek
About 81,167 people live in Johns Creek, Georgia, 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.
Get quotes from local HVAC contractors before deciding.
Reading further on this page's numbers
The methodology guide walks through exactly how Johns Creek's 2.99 seasonal COP and the rest of this page's numbers get built. Johns Creek's 12°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.