Should Smyrna switch to a heat pump?

Smyrna sits right on the fence — how long you'll own the house decides this one. 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). Smyrna's residents would see roughly $341 a year back in running costs, putting the payback around 10.3 years. It's a genuine toss-up here — Smyrna's numbers don't point clearly either way.

Smyrna's weather, in the numbers that matter

Degree days tell the story here: Smyrna racks up 2337 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 2091 cooling degree days on the cooling side. Sizing runs off the design temperature, not the average day: 12.7°F here (record low 11.3°F), which works out to a seasonal COP of 3 for the cold-climate class of unit this climate calls for. A cold-climate unit is the right call in Smyrna — below 25°F design temperature, a standard heat pump leans hard on electric-resistance backup, which erases most of the savings. These numbers come from DOBBINS AIR RESERVE BASE AIRP, the closest NOAA station, 3.8 miles out.

Smyrna's running-cost comparison, in dollars

Modelled on a typical 2000-square-foot house, the heat pump draws about 1,973 kWh a year to keep it warm, plus cooling, for a combined electric bill near $560 a year. Smyrna's gas rate of 20.42 per Mcf, applied to the 24 Mcf a year the furnace burns, puts its running cost near $901 a year, against 14.90¢ per kWh for electricity. Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs about 39.6 years, for a 15-year net position $1,618 ahead.

Electric resistance heat in Smyrna, compared

Plenty of homes in Smyrna heat with electricity alone, no gas line involved. Swap the comparison to resistance heat instead of gas, and Smyrna's answer improves. About $726 a year comes back this way, enough that the 11-year payback clears the $8,000 premium comfortably within the equipment's life.

Smyrna against the rest of the country

Smyrna lands at position 2263 out of 3206 cities on heating severity (coldest is 1), and 717 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.

Next step for 57,177 people in Smyrna

Smyrna, Georgia is home to about 57,177 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 Smyrna, nothing is lost by holding off until the current equipment genuinely fails.

Ask a local HVAC contractor for a quote before committing either way.

Reading further on this page's numbers

Nothing above is a black box: the methodology guide shows the full arithmetic behind Smyrna's 3 seasonal COP and payback figure. Smyrna's 12.7°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.