Heat Pump Payback in Jacksonville, FL
Should Jacksonville switch to a heat pump?
This one's marginal in Jacksonville: it only clears if you stay long enough. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $3,000. Lower bills claw that back: about $344 saved annually, for a payback of roughly 8.7 years. Whether that's worth it in Jacksonville depends on how many years you expect to own the place.
Checking a different city
Landed on Jacksonville by mistake, or want to compare it against somewhere else? Search the other 3206 cities below.
The climate behind Jacksonville's payback figure
Degree days tell the story here: Jacksonville racks up 709 heating degree days each year (base 65°F), and summers are severe enough that cooling can dominate the annual bill, with 3536 cooling degree days on the cooling side. 34°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of 33.1°F in the 2024 station record. Worked through the model, that's a seasonal COP of 3.21 on the standard unit fit for this climate. A standard ducted system is enough here; Jacksonville's design temperature doesn't justify the cold-climate premium. These numbers come from Jacksonville NAS, the closest NOAA station, 7.2 miles out.
What it actually costs to run, year to year
Modelled on a typical 2000-square-foot house, the heat pump draws about 559 kWh a year to keep it warm, plus cooling, for a combined electric bill near $551 a year. The gas furnace it replaces burns roughly 7 Mcf a year at $25.48 per Mcf here, for a running cost near $895 a year including the old AC (electricity here runs 15.43¢/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 $2,156 ahead.
How sensitive Jacksonville's result is to prices
Because the heat pump's better air conditioning saves more electricity than its heating uses, it stays cheaper to run than the current furnace and AC in Jacksonville at any electricity price. 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.
The other scenario: no gas furnace to begin with
Gas isn't universal in Jacksonville, many houses run on electric heat already. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. Even against resistance heat, the running-cost gap here isn't enough to clear the $7,500 incremental cost within the equipment's 15-year life.
Where Jacksonville ranks in this dataset
Ranked against the other 3206 cities covered, Jacksonville comes in at 2988 for heating severity, 1 would be the coldest place in the dataset, and 10 by population, where 1 is largest. That's the mildest third of cities covered, where utility rates carry more of the answer than climate does.
Next step if you live in Jacksonville
About 1,009,833 people live in Jacksonville, Florida, 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
Every constant behind this page, the 3.21 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Not every home in Jacksonville has gas; the guide comparing a heat pump against electric baseboard covers that case separately.