Will a heat pump pay off in Picayune, MS?
In Picayune, a heat pump pays for itself within a reasonable window. $1,000 is what Picayune would pay extra to go electric rather than replace the furnace and AC with the same again, once the $2,000 federal credit is applied. Lower bills claw that back: about $249 saved annually, for a payback of roughly 4 years. The window here is reasonable, and it's specific to what Picayune actually pays for power and gas.
How cold Picayune actually gets
Degree days tell the story here: Picayune racks up 1348 heating degree days each year (base 65°F), and summers are severe enough that cooling can dominate the annual bill, with 2796 cooling degree days on the cooling side. 26.6°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 17.6°F on file. Worked through the model, that's a seasonal COP of 2.99 on the standard unit fit for this climate. Picayune's winters don't get cold enough to need the cold-climate premium — a standard unit holds up fine. Source: NOAA station PICAYUNE MUNI, 3.2 miles from Picayune — the closest one on record.
Picayune's running-cost comparison, in dollars
A 2000-square-foot house here would pull roughly 1,142 heating kilowatt-hours annually on top of cooling, totalling about $545 a year on electricity. That compares with roughly 14 Mcf a year of gas at Picayune's 16.64 per-Mcf rate — about $794 a year — against a local electricity rate of 15.47¢/kWh. Looked at as a full purchase rather than an incremental one, payback here is roughly 44.2 years, leaving the 15-year total $2,732 ahead.
The other scenario: no gas furnace to begin with
Plenty of homes in Picayune heat with electricity alone, no gas line involved. 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 $543 a year, which recovers the extra $5,500 spent going electric in roughly 10.1 years.
Where Picayune ranks in this dataset
Among 3206 cities, Picayune's winter puts it at rank 2748 for severity, while its size puts it at rank 2807 for population — 1 in both cases being the extreme. That's the mildest third of cities covered, where utility rates carry more of the answer than climate does.
Next step for 12,017 people in Picayune
Picayune, Mississippi is home to about 12,017 people, and the figures above are the same ones a local HVAC contractor uses to size and quote a system — this site doesn't guess where a real quote would land, it just tells you whether it's worth asking for one. Given the math above, Picayune is a place worth lining up quotes ahead of a breakdown, not waiting for one.
Ask a local HVAC contractor for a quote before committing either way.
More on how this number was built
The methodology guide walks through exactly how Picayune's 2.99 seasonal COP and the rest of this page's numbers get built. The $2,000 federal credit baked into Picayune's number is explained, with the before-and-after math, in the tax credit guide.