Should Mobile switch to a heat pump?
In Mobile, a heat pump pays for itself within a reasonable window. Against a like-for-like gas furnace and AC swap, going electric costs $1,000 more up front here (already netting out a $2,000 tax credit). Mobile's residents would see roughly $272 a year back in running costs, putting the payback around 3.7 years. That's a real payback, built from Mobile's own climate and utility rates, not a national guess.
The climate behind Mobile's payback figure
Degree days tell the story here: Mobile racks up 1190 heating degree days each year (base 65°F), and summers are severe enough that cooling can dominate the annual bill, with 2984 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 27.7°F, against a record low of 20.1°F. That puts the seasonal coefficient of performance at 3.03 for the recommended standard unit. A standard ducted system is enough here; Mobile's design temperature doesn't justify the cold-climate premium. Climate figures trace to the nearest NOAA station, COAST GUARD SECTOR, 3.7 miles from Mobile.
Mobile's running-cost comparison, in dollars
Electricity use for heating alone comes out to about 994 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $588 a year. That compares with roughly 12 Mcf a year of gas at Mobile's 17.56 per-Mcf rate — about $860 a year — against a local electricity rate of 16.62¢/kWh. Priced as a standalone purchase rather than against a like-for-like replacement, equipment payback runs about 40.4 years, for a 15-year net position $3,083 ahead.
If your home heats with electric baseboard instead of gas
Plenty of homes in Mobile 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. The saving here runs about $555 a year, which recovers the extra $5,500 spent going electric in roughly 9.9 years.
Mobile against the rest of the country
Mobile lands at position 2799 out of 3206 cities on heating severity (coldest is 1), and 126 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.
Deciding what's next in Mobile, AL
About 201,367 people live in Mobile, Alabama, and every number on this page is what a contractor would actually work from when quoting a system here — the point isn't to replace that quote, it's to tell you whether to bother asking for one. Here, it's worth getting quotes before your current system fails, not after.
Line up a few local HVAC quotes before you decide.
Where Mobile's figure comes from
Every constant behind this page — the 3.03 seasonal COP, the degree-day corrections, the equipment costs — is documented in the methodology guide. See what Mobile's figure looks like without the $2,000 federal credit in the guide to how that credit moves the payback window.