Will a heat pump pay off in Ridgeland, MS?
In Ridgeland, the math is close enough that it comes down to how long you plan to stay. $3,500 is what Ridgeland would pay extra to go electric rather than replace the furnace and AC with the same again, once the $2,000 federal credit is applied. Lower bills claw that back: about $273 saved annually, for a payback of roughly 12.8 years. It's a genuine toss-up here — Ridgeland's numbers don't point clearly either way.
How cold Ridgeland actually gets
Degree days tell the story here: Ridgeland racks up 1765 heating degree days each year (base 65°F), and summers are severe enough that cooling can dominate the annual bill, with 2684 cooling degree days on the cooling side. 19.9°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 10°F on file. Worked through the model, that's a seasonal COP of 3.18 on the cold-climate unit fit for this climate. Below the 25°F line where a standard machine starts leaning on resistance backup, Ridgeland sits firmly in cold-climate territory, so that's the class of unit priced here. Source: NOAA station HAWKINS FIELD AIRPORT, 6.9 miles from Ridgeland — the closest one on record.
What it actually costs to run, year to year
Electricity use for heating alone comes out to about 1,405 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $571 a year. The gas furnace it replaces burns roughly 18 Mcf a year at 16.64 per Mcf here, for a running cost near $844 a year (electricity here runs 15.47¢/kWh). Buy it outright, not incrementally, and payback stretches to 49.5 years; over 15 years the net position sits $588 ahead.
If your home heats with electric baseboard instead of gas
Not every home in Ridgeland has gas service. Swap the comparison to resistance heat instead of gas, and Ridgeland's answer improves. The saving here runs about $658 a year, which recovers the extra $8,000 spent going electric in roughly 12.2 years.
How Ridgeland compares nationally
Ridgeland lands at position 2560 out of 3206 cities on heating severity (coldest is 1), and 1634 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.
What to do with this number in Ridgeland
Ridgeland, Mississippi is home to about 24,576 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 Ridgeland, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
More on how this number was built
The methodology guide walks through exactly how Ridgeland's 3.18 seasonal COP and the rest of this page's numbers get built. Ridgeland's 19.9°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.