Will a heat pump pay off in Mableton, GA?
In Mableton, the math is close enough that it comes down to how long you plan to stay. $3,500 is what Mableton 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 $343 saved annually, for a payback of roughly 10.2 years. It's a genuine toss-up here — Mableton's numbers don't point clearly either way.
How cold Mableton actually gets
Degree days tell the story here: Mableton racks up 2436 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 1996 cooling degree days on the cooling side. The 99% winter design temperature here — the cold snap equipment must be sized for, not the seasonal average — is 12°F, against a record low of 12°F. That puts the seasonal coefficient of performance at 2.99 for the recommended cold-climate unit. Below the 25°F line where a standard machine starts leaning on resistance backup, Mableton sits firmly in cold-climate territory, so that's the class of unit priced here. Climate figures trace to the nearest NOAA station, FULTON CO-BROWN FLD ARPT, 4 miles from Mableton.
Mableton's running-cost comparison, in dollars
A 2000-square-foot house here would pull roughly 2,063 heating kilowatt-hours annually on top of cooling, totalling about $561 a year on electricity. Mableton's gas rate of 20.42 per Mcf, applied to the 25 Mcf a year the furnace burns, puts its running cost near $903 a year, against 14.90¢ per kWh for electricity. Buy it outright, not incrementally, and payback stretches to 39.4 years; over 15 years the net position sits $1,638 ahead.
The other scenario: no gas furnace to begin with
Gas isn't universal in Mableton — many houses run on electric heat already. Swap the comparison to resistance heat instead of gas, and Mableton's answer improves. The saving here runs about $744 a year, which recovers the extra $8,000 spent going electric in roughly 10.8 years.
Mableton against the rest of the country
Among 3206 cities, Mableton's winter puts it at rank 2213 for severity, while its size puts it at rank 482 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 78,314 people in Mableton
Mableton, Georgia is home to about 78,314 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. In Mableton, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
Where Mableton's figure comes from
Every constant behind this page — the 2.99 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. Mableton'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.