Heat pump vs. gas furnace in Carrollton, GA
In Carrollton, the math is close enough that it comes down to how long you plan to stay. Against a like-for-like gas furnace and AC swap, going electric costs $3,500 more up front here (already netting out a $2,000 tax credit). Carrollton's residents would see roughly $336 a year back in running costs, putting the payback around 10.4 years. It's a genuine toss-up here — Carrollton's numbers don't point clearly either way.
Carrollton's weather, in the numbers that matter
Degree days tell the story here: Carrollton racks up 2709 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 1254 cooling degree days on the cooling side. 19.2°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 9°F on file. Worked through the model, that's a seasonal COP of 3.16 on the cold-climate unit fit for this climate. A cold-climate unit is the right call in Carrollton — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. Climate figures trace to the nearest NOAA station, WEST GEORGIA REGIONAL AIRPORT, 5.2 miles from Carrollton.
Carrollton's running-cost comparison, in dollars
Modelled on a typical 2000-square-foot house, the heat pump draws about 2,171 kWh a year to keep it warm, plus cooling, for a combined electric bill near $483 a year. That compares with roughly 28 Mcf a year of gas at Carrollton's 20.42 per-Mcf rate — about $818 a year — against a local electricity rate of 14.90¢/kWh. Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs about 40.2 years, for a 15-year net position $1,533 ahead.
Electric resistance heat in Carrollton, compared
Plenty of homes in Carrollton 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 $781 a year, which recovers the extra $8,000 spent going electric in roughly 10.2 years.
How Carrollton compares nationally
Carrollton lands at position 2034 out of 3206 cities on heating severity (coldest is 1), and 1412 out of 3206 by population size (biggest is 1). That's the middle third for winter severity among the cities covered here.
Deciding what's next in Carrollton, GA
Carrollton, Georgia is home to about 28,306 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 Carrollton, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
Where Carrollton's figure comes from
The methodology guide walks through exactly how Carrollton's 3.16 seasonal COP and the rest of this page's numbers get built. At a 19.2°F design temperature, Carrollton sits in cold-climate territory; the guide to that class of unit explains why.