Heat Pump Payback in Flowood, MS
Heat pump vs. gas furnace in Flowood, MS
In Flowood, the extra upfront cost technically comes back, just not before the equipment wears out. $5,500 is what Flowood would pay extra to go electric rather than replace the furnace and AC with the same again. Flowood's residents would see roughly $272 a year back in running costs, putting the payback around 20.2 years. That's a technicality, not a recommendation, for anyone actually living in Flowood.
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How cold Flowood actually gets
1686 heating degree days pile up here every year, so Flowood has a mild winter by US standards; the cooling side runs to 2732 cooling degree days, where summers are severe enough that cooling can dominate the annual bill. 20.1°F is the figure equipment gets sized against here, the 99th-percentile cold snap, not an average day, with a low of 10.9°F in the 2024 station record. Worked through the model, that's a seasonal COP of 3.18 on the cold-climate unit fit for this climate. Mild on average, but the occasional cold snap is what sizes the equipment: at a 20.1°F design temperature Flowood 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. These numbers come from Jackson International Airport, the closest NOAA station, 1.1 miles out.
Flowood's running-cost comparison, in dollars
Modelled on a typical 2000-square-foot house, the heat pump draws about 1,343 kWh a year to keep it warm, plus cooling, for a combined electric bill near $568 a year. The gas furnace it replaces burns roughly 18 Mcf a year at $16.64 per Mcf here, for a running cost near $840 a year including the old AC (electricity here runs 15.47¢/kWh). 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 $1,422 behind.
How sensitive Flowood's result is to prices
Gas would only overtake the heat pump in Flowood if electricity rose past 222.7¢/kWh from 15.47¢, or gas fell under $1.16 per Mcf from $16.64. A useful quote test for Flowood: the heat pump is worth it within a decade if it costs less than $2,720 more than replacing the furnace and AC, and within 7 years if the gap is under $1,904.
Electric resistance heat in Flowood, compared
Plenty of homes in Flowood 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 gap still doesn't close: the $10,000 incremental cost outlasts the 15-year equipment life here even against resistance heat.
Where Flowood ranks in this dataset
Ranked against the other 3206 cities covered, Flowood comes in at 2592 for heating severity, 1 would be the coldest place in the dataset, and 3017 by population, where 1 is largest. 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 Flowood
Flowood, Mississippi is home to about 10,853 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 Flowood, nothing is lost by holding off until the current equipment genuinely fails.
Line up a few local HVAC quotes before you decide.
More on how this number was built
Every constant behind this page, the 3.18 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Flowood's 20.1°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.