Destin, FL: the heat pump payback math
The math in Destin isn't close — a heat pump wins outright. Against a like-for-like gas furnace and AC swap, going electric costs $1,000 more up front here (already netting out a $2,000 tax credit). That premium is recovered through $358 of lower running costs every year, landing the payback clock at roughly 2.8 years. Nothing about that conclusion is generic — it's built entirely from Destin's own numbers.
The climate behind Destin's payback figure
929 heating degree days pile up here every year, so Destin barely has a winter to speak of; the cooling side runs to 3317 cooling degree days, where summers are severe enough that cooling can dominate the annual bill. 32°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 24.1°F on file. Worked through the model, that's a seasonal COP of 3.15 on the standard unit fit for this climate. A standard ducted system is enough here; Destin's design temperature doesn't justify the cold-climate premium. Source: NOAA station DESTIN-FT.WALTON BEACH APT, 0.3 miles from Destin — 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 747 kWh a year to keep it warm, plus cooling, for a combined electric bill near $552 a year. Destin's gas rate of 25.48 per Mcf, applied to the 10 Mcf a year the furnace burns, puts its running cost near $910 a year, against 15.43¢ per kWh for electricity. Buy it outright, not incrementally, and payback stretches to 30.7 years; over 15 years the net position sits $4,373 ahead.
Electric resistance heat in Destin, compared
Gas isn't universal in Destin — many houses run on electric heat already. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. The saving here runs about $475 a year, which recovers the extra $5,500 spent going electric in roughly 11.6 years.
Where Destin ranks in this dataset
Destin lands at position 2934 out of 3206 cities on heating severity (coldest is 1), and 2511 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.
Next step for 13,991 people in Destin
About 13,991 people live in Destin, 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, it's worth getting quotes before your current system fails, not after.
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 Destin's 3.15 seasonal COP and payback figure. See what Destin's figure looks like without the $2,000 federal credit in the guide to how that credit moves the payback window.