Heat pump vs. gas furnace in Enterprise, AL
In Enterprise, a heat pump pays for itself within a reasonable window. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $1,000 after a $2,000 federal tax credit. Enterprise's residents would see roughly $237 a year back in running costs, putting the payback around 4.2 years. The window here is reasonable, and it's specific to what Enterprise actually pays for power and gas.
How cold Enterprise actually gets
Degree days tell the story here: Enterprise racks up 1412 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 2413 cooling degree days on the cooling side. 26.6°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 17.1°F on file. Worked through the model, that's a seasonal COP of 2.99 on the standard unit fit for this climate. Enterprise's winters don't get cold enough to need the cold-climate premium — a standard unit holds up fine. Climate figures trace to the nearest NOAA station, SHELL AHP, 2.6 miles from Enterprise.
The month-to-month numbers for Enterprise
Modelled on a typical 2000-square-foot house, the heat pump draws about 1,196 kWh a year to keep it warm, plus cooling, for a combined electric bill near $541 a year. Enterprise's gas rate of 17.56 per Mcf, applied to the 15 Mcf a year the furnace burns, puts its running cost near $778 a year, against 16.62¢ per kWh for electricity. Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs about 46.4 years, for a 15-year net position $2,559 ahead.
The other scenario: no gas furnace to begin with
Gas isn't universal in Enterprise — many houses run on electric heat already. Swap the comparison to resistance heat instead of gas, and Enterprise's answer improves. The saving here runs about $573 a year, which recovers the extra $5,500 spent going electric in roughly 9.6 years.
How Enterprise compares nationally
Ranked against the other 3206 cities covered, Enterprise comes in at 2720 for heating severity — 1 would be the coldest place in the dataset — and 1327 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 Enterprise
Enterprise, Alabama is home to about 30,731 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. Given the math above, Enterprise is a place worth lining up quotes ahead of a breakdown, not waiting for one.
Ask a local HVAC contractor for a quote before committing either way.
Where Enterprise's figure comes from
The methodology guide walks through exactly how Enterprise's 2.99 seasonal COP and the rest of this page's numbers get built. The $2,000 federal credit baked into Enterprise's number is explained, with the before-and-after math, in the tax credit guide.