Heat Pump Payback in Marietta, OH
Is a heat pump worth it in Marietta?
In Marietta, the extra upfront cost technically comes back, just not before the equipment wears out. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $5,500. Marietta's residents would see roughly $37 a year back in running costs, putting the payback around 150.2 years. That's a technicality, not a recommendation, for anyone actually living in Marietta.
Not the city you meant?
This runs the same numbers for 3206 US cities, not just Marietta. Look one up here.
How cold Marietta actually gets
Degree days tell the story here: Marietta racks up 4129 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 1169 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 10°F, and the coldest daily reading in the 2024 station record was 3.9°F. That puts the seasonal coefficient of performance at 2.94 for the recommended cold-climate unit. Below the 25°F line where a standard machine starts leaning on resistance backup, Marietta sits firmly in cold-climate territory, so that's the class of unit priced here. These numbers come from Mid-Ohio Valley Regional Airp, the closest NOAA station, 5.7 miles out.
Marietta's running-cost comparison, in dollars
Electricity use for heating alone comes out to about 3,556 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $838 a year. Marietta's gas rate of $13.85 per Mcf, applied to the 43 Mcf a year the furnace burns, puts the current furnace-and-AC running cost near $874 a year, against 18.40¢ per kWh for electricity. If the current system still worked and you replaced it anyway, the full cost would take longer than the 15-year equipment life to earn back; against buying a new furnace and AC regardless, the 15-year total lands $4,951 behind.
What would change Marietta's answer
Gas would only overtake the heat pump in Marietta if electricity rose past 19.6¢/kWh from 18.40¢, or gas fell under $13.00 per Mcf from $13.85. A useful quote test for Marietta: the heat pump is worth it within a decade if it costs less than $370 more than replacing the furnace and AC, and within 7 years if the gap is under $259.
If your home heats with electric baseboard instead of gas
Plenty of homes in Marietta heat with electricity alone, no gas line involved. Against electric-resistance heat, baseboard or an electric furnace, both 100% efficient but still just resistance, the case for switching gets stronger here. About $1,365 a year comes back this way, enough that the 7.3-year payback clears the $10,000 premium comfortably within the equipment's life.
Where Marietta ranks in this dataset
Ranked against the other 3206 cities covered, Marietta comes in at 1439 for heating severity, 1 would be the coldest place in the dataset, and 2648 by population, where 1 is largest. That's the middle third for winter severity among the cities covered here.
Next step if you live in Marietta
Marietta, Ohio is home to about 13,039 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 Marietta, nothing is lost by holding off until the current equipment genuinely fails.
Get quotes from local HVAC contractors before deciding.
Reading further on this page's numbers
The methodology guide walks through exactly how Marietta's 2.94 seasonal COP and the rest of this page's numbers get built. Marietta's 10°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.