Heat pump vs. gas furnace in Madison, AL
Madison 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). Lower bills claw that back: about $263 saved annually, for a payback of roughly 13.3 years. It's a genuine toss-up here — Madison's numbers don't point clearly either way.
Madison's weather, in the numbers that matter
Degree days tell the story here: Madison racks up 2436 heating degree days each year (base 65°F), and summers are hot enough that cooling matters as much as heating, with 2227 cooling degree days on the cooling side. 10.9°F is the figure equipment gets sized against here — the 99th-percentile cold snap, not an average day — with a record low of 8.1°F on file. Worked through the model, that's a seasonal COP of 2.96 on the cold-climate unit fit for this climate. Below the 25°F line where a standard machine starts leaning on resistance backup, Madison sits firmly in cold-climate territory, so that's the class of unit priced here. Source: NOAA station HUNTSVILLE INTL/C.T.JONES FIE, 4.8 miles from Madison — the closest one on record.
What it actually costs to run, year to year
Electricity use for heating alone comes out to about 2,084 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $662 a year. Madison's gas rate of 17.56 per Mcf, applied to the 25 Mcf a year the furnace burns, puts its running cost near $925 a year, against 16.62¢ per kWh for electricity. Buy it outright, not incrementally, and payback stretches to 51.3 years; over 15 years the net position sits $449 ahead.
The other scenario: no gas furnace to begin with
Plenty of homes in Madison heat with electricity alone, no gas line involved. Swap the comparison to resistance heat instead of gas, and Madison's answer improves. The saving here runs about $843 a year, which recovers the extra $8,000 spent going electric in roughly 9.5 years.
How Madison compares nationally
Madison lands at position 2214 out of 3206 cities on heating severity (coldest is 1), and 613 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 Madison
Madison, Alabama is home to about 64,029 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 Madison, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
Where Madison's figure comes from
Nothing above is a black box: the methodology guide shows the full arithmetic behind Madison's 2.96 seasonal COP and payback figure. Madison's 10.9°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.