Heat Pump Payback in Forest Park, GA
Forest Park, GA: the heat pump payback math
Forest Park technically pencils out, but only past the point the equipment would need replacing anyway. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $5,500. Lower bills claw that back: about $339 saved annually, for a payback of roughly 16.2 years. That's a technicality, not a recommendation, for anyone actually living in Forest Park.
Checking a different city
This runs the same numbers for 3206 US cities, not just Forest Park. Look one up here.
Forest Park's weather, in the numbers that matter
Forest Park has a mild winter by US standards, 2093 heating degree days a year against a 65°F base, and summers are hot enough that cooling matters as much as heating, at 2333 cooling degree days. The 99% winter design temperature here, the cold snap equipment must be sized for, not the seasonal average, is 14°F, and the coldest daily reading in the 2024 station record was 12.9°F. That puts the seasonal coefficient of performance at 3.04 for the recommended cold-climate unit. Mild on average, but the occasional cold snap is what sizes the equipment: at a 14°F design temperature Forest Park falls just under the 25°F line where a standard heat pump starts leaning on resistance backup, so the model prices a cold-climate unit to be safe. Climate figures trace to the nearest NOAA station, Hartsfield-Jackson Atlanta In, 4.9 miles from Forest Park.
The yearly running costs in Forest Park
Modelled on a typical 2000-square-foot house, the heat pump draws about 1,743 kWh a year to keep it warm, plus cooling, for a combined electric bill near $556 a year. Forest Park's gas rate of $20.42 per Mcf, applied to the 22 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $896 a year, against 14.90¢ per kWh for electricity. Buying outright rather than at replacement time stretches payback to longer than the 15-year equipment life. Over 15 years, compared with a like-for-like replacement, the heat pump leaves you $408 behind.
How sensitive Forest Park's result is to prices
Gas would only overtake the heat pump in Forest Park if electricity rose past 62.8¢/kWh from 14.90¢, or gas fell under $4.85 per Mcf from $20.42. A useful quote test for Forest Park: the heat pump is worth it within a decade if it costs less than $3,390 more than replacing the furnace and AC, and within 7 years if the gap is under $2,373.
The other scenario: no gas furnace to begin with
Plenty of homes in Forest Park heat with electricity alone, no gas line involved. Compared with baseboard or electric-furnace resistance heat, the numbers shift in the heat pump’s favor. Switching saves about $684 a year here, a heat pump moving heat rather than generating it needs far less electricity than resistance coils, so the extra $10,000 spent up front comes back in about 14.6 years.
Forest Park against the rest of the country
Forest Park lands at position 2385 out of 3206 cities on heating severity (coldest is 1), and 1988 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 Forest Park
Forest Park, Georgia is home to about 19,301 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 Forest Park, nothing is lost by holding off until the current equipment genuinely fails.
Line up a few local HVAC quotes before you decide.
Reading further on this page's numbers
The methodology guide walks through exactly how Forest Park's 3.04 seasonal COP and the rest of this page's numbers get built. At a 14°F design temperature, Forest Park sits in cold-climate territory; the guide to that class of unit explains why.