Heat Pump Payback in Horn Lake, MS
Horn Lake, MS: the heat pump payback math
The payback math works in Horn Lake on paper, past the equipment's own working life. Against a like-for-like gas furnace and AC swap, going electric costs $5,500 more up front here. Lower bills claw that back: about $265 saved annually, for a payback of roughly 20.8 years. Horn Lake's own numbers say this pencils out only in theory, not in practice.
Compare against another city
This runs the same numbers for 3206 US cities, not just Horn Lake. Look one up here.
The climate behind Horn Lake's payback figure
Horn Lake has a mild winter by US standards, 2396 heating degree days a year against a 65°F base, and summers are hot enough that cooling matters as much as heating, at 2383 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 1.9°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 Horn Lake. Source: NOAA station Memphis International Airport, 8 miles from Horn Lake, the closest one on record.
What it actually costs to run, year to year
Modelled on a typical 2000-square-foot house, the heat pump draws about 2,029 kWh a year to keep it warm, plus cooling, for a combined electric bill near $628 a year. The gas furnace it replaces burns roughly 25 Mcf a year at $16.64 per Mcf here, for a running cost near $893 a year including the old AC (electricity here runs 15.47¢/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 $1,528 behind.
How sensitive Horn Lake's result is to prices
This result holds unless electricity climbs above 42.7¢/kWh (it is 15.47¢ now) or gas drops below $6.03 per Mcf (now $16.64); past either point, gas becomes the cheaper fuel in Horn Lake. When quotes arrive, compare the heat pump price with a like-for-like furnace and AC replacement: at $265 a year saved, a difference under $1,855 pays back within 7 years here, and under $2,650 within 10.
If your home heats with electric baseboard instead of gas
Gas isn't universal in Horn Lake, 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. About $788 a year comes back this way, enough that the 12.7-year payback clears the $10,000 premium comfortably within the equipment's life.
How Horn Lake compares nationally
Horn Lake lands at position 2239 out of 3206 cities on heating severity (coldest is 1), and 1503 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 Horn Lake
About 26,574 people live in Horn Lake, Mississippi, 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.
More on how this number was built
Every constant behind this page, the 2.99 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Horn Lake's 12°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.