Heat Pump Payback in Cumming, GA
Cumming, GA: the heat pump payback math
Cumming technically pencils out, but only past the point the equipment would need replacing anyway. Against a like-for-like gas furnace and AC swap, going electric costs $5,500 more up front here. Lower bills claw that back: about $344 saved annually, for a payback of roughly 16 years. That's a technicality, not a recommendation, for anyone actually living in Cumming.
Checking a different city
Cumming is one of 3206 cities covered here, each run through the same model. Search another below.
How cold Cumming actually gets
Cumming has a mild winter by US standards, 2821 heating degree days a year against a 65°F base, and summers are hot enough that cooling matters as much as heating, at 1483 cooling degree days. Sizing runs off the design temperature, not the average day: 12.9°F here (coldest 2024 reading 5.5°F), which works out to a seasonal COP of 3.01 for the cold-climate class of unit this climate calls for. Mild on average, but the occasional cold snap is what sizes the equipment: at a 12.9°F design temperature Cumming 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. Source: NOAA station Cherokee County Airport, 17.9 miles from Cumming, the closest one on record.
Cumming's running-cost comparison, in dollars
Electricity use for heating alone comes out to about 2,373 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $542 a year. The gas furnace it replaces burns roughly 29 Mcf a year at $20.42 per Mcf here, for a running cost near $886 a year including the old AC (electricity here runs 14.90¢/kWh). Priced as a standalone purchase, with a working furnace ripped out early, payback would take longer than the 15-year equipment life. Measured against the like-for-like replacement instead, a household here ends 15 years $335 behind.
What would change Cumming's answer
Gas would only overtake the heat pump in Cumming if electricity rose past 35.0¢/kWh from 14.90¢, or gas fell under $8.70 per Mcf from $20.42. A useful quote test for Cumming: the heat pump is worth it within a decade if it costs less than $3,440 more than replacing the furnace and AC, and within 7 years if the gap is under $2,408.
Electric resistance heat in Cumming, compared
Plenty of homes in Cumming 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. The saving here runs about $809 a year, which recovers the extra $10,000 spent going electric in roughly 12.4 years.
How Cumming compares nationally
Ranked against the other 3206 cities covered, Cumming comes in at 1986 for heating severity, 1 would be the coldest place in the dataset, and 3163 by population, where 1 is largest. That's the middle third for winter severity among the cities covered here.
What to do with this number in Cumming
Cumming, Georgia is home to about 10,175 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 Cumming, nothing is lost by holding off until the current equipment genuinely fails.
Line up a few local HVAC quotes before you decide.
Where Cumming's figure comes from
Nothing above is a black box: the methodology guide shows the full arithmetic behind Cumming's 3.01 seasonal COP and payback figure. At a 12.9°F design temperature, Cumming sits in cold-climate territory; the guide to that class of unit explains why.