Mobile, AL Central AC Replacement Cost, by SEER (2027)
Adjust your home size & electric cost in Mobile, AL
Homeowners in Mobile, AL replacing central air with a 16 SEER unit should budget $10,660 to $12,850 installed. We sized it at 4 tons, about 48,000 BTU, for a home of 2,140 sq. ft. Expect Mobile bids to land roughly 2% above the Alabama average; the city has about 183,000 residents and the costs that come with that.
This is the cost of swapping old equipment for new on the existing duct system. Anything structural, such as new runs, a bigger circuit or a rooftop mount, is extra.
What Each Efficiency Level Costs in Mobile
From the cheapest 14 SEER bid ($8,530) to the priciest 20 SEER one ($26,940), Mobile quotes for a 4-ton system span a wide band. Most buyers sit in the middle: 16 SEER at $10,660 to $12,850 or 18 SEER at $16,290 to $19,630.
Mobile Next to the Alabama Average, by SEER
| System (4 ton) | Mobile | Alabama average | Materials |
|---|---|---|---|
| 14 SEER | $8,530 - $10,280 | $8,360 - $10,080 | $5,330 |
| 16 SEER | $10,660 - $12,850 | $10,450 - $12,590 | $6,590 |
| 18 SEER | $16,290 - $19,630 | $15,960 - $19,240 | $9,950 |
| 20 SEER | $22,350 - $26,940 | $21,900 - $26,400 | $13,560 |
Equipment is the smaller share of the bill: about $5,330 at 14 SEER and $6,590 at 16 SEER. Labor, travel and the contractor's overhead make up the rest.
Mobile Against the Alabama Baseline
One statewide number misses real local differences. We scale the Alabama model by city size so the Mobile figure reflects its own labor market. The Alabama average for 16 SEER is $10,450 to $12,590; with the 2% city adjustment, Mobile lands at $10,660 to $12,850.
Whether you live near the center or the city line, the estimate holds for the 30 Mobile ZIP codes in Mobile County. The cheapest bid is often the one that leaves out the permit, a new line set or duct sealing. Compare complete scopes, not headline prices.
The Running-Cost Side of the Mobile Decision
The electric rate behind these numbers is the Alabama residential average, $0.197/kWh, about 9% below the national average of $0.217. Over the ten years in our data, Alabama rates rose about 2.57% a year; at that pace the average would reach roughly $0.25/kWh by 2036.
Hover or tap any year to see what each rating costs to run that season. Rates rise 2.57% a year, the AL ten-year trend.
Starting point: this summer at AL's current rate. From there the rate grows 2.57% per year, compounded, and each season cost is rounded up to $10.
At that rate, a 16 SEER system in Mobile uses about 6,748 kWh a season, roughly $1,330 a year; a worn 9 SEER unit would cost about $2,360.
Upgrade Payback Finder: Your Old AC vs a New One
Pick the unit you have and the one you are considering. Figures are for a 4-ton system at Alabama electric rates ($0.197/kWh, rising 2.57% a year).
| Installed price of the new system | $11,580 |
| Electricity saved, first year | $1,030 |
| Saved over 10 summers (rates rising) | $11,500 |
| Payback | 10.1 years |
| Net after 10 summers | -$90 |
Savings alone fall short: 9 to 16 SEER is still $90 behind after 10 summers in AL.
Replacing a working unit: the whole install counts as the cost. If the old one has failed, weigh each rating against a 14 SEER quote instead.
Mobile: What Each Upgrade From 9 SEER Returns
| 9 SEER | 14 SEER | 16 SEER | 18 SEER | 20 SEER | |
|---|---|---|---|---|---|
| Installation Cost | - | $9,270 | $11,580 | $17,700 | $24,290 |
| Electric Usage / Yr | 11,949 kWh | 7,625 kWh | 6,748 kWh | 6,067 kWh | 5,521 kWh |
| Electric Cost / Yr | $2,360 | $1,500 | $1,330 | $1,200 | $1,090 |
| Energy Savings / Yr | - | $860 | $1,030 | $1,160 | $1,270 |
| Payback (Rates Rising) | - | 9.7 years | 10.1 years | 13.1 years | 15.8 years |
| 10-Year Net (Rates Rising) | - | $300 | -$90 | -$4,700 | -$10,080 |
Coming from 9 SEER, a 16 SEER replacement earns back its price in roughly 10.1 years of lower Mobile bills, with rate increases included.
Buy Price vs Ten Years of Power in Mobile
Buy Price vs 10-Year Running Cost: Total Cost of Ownership in AL
For each SEER rating: the installed price, 10 years of cooling electricity at Alabama rates (rising 2.57% a year), and the two added together. The shortest total bar is the cheapest system to own. Hover or tap a bar for the math.
Lowest 10-year total in Alabama: 16 SEER, $26,500 ($11,580 up front, $14,920 in electricity).
How the electricity bar is built: this season at today's AL rate, then nine more seasons, each raised by the 2.57% yearly increase AL has averaged. Install is the typical price shown on this page. Every figure is rounded up to the next $10 separately, which can leave the parts $10 over the total. 14 SEER is left out: it is below the federal minimum for new central AC installs in Alabama.
Price a Central AC for Your ZIP Code
See Costs in Your Area!
Start Here - Enter your zip
What Mobile Summers Ask of an Air Conditioner
Statewide numbers frame the Mobile estimate: region 5 on our map, summer highs averaging about 92°F, and winter highs around 56°F. In Mobile, the air conditioner is close to a year-round appliance, so reliability and efficiency both earn their keep.
Climate zones run from 1 (cool) to 5 (hot); Alabama is in Zone 5.
About 4.0° south of the northernmost city in this Alabama guide, Mobile typically gets a longer cooling season.
An oversized unit in muggy Mobile weather cools fast, shuts off early and leaves the house clammy. Right sizing fixes that.
About 290 miles south of Huntsville, Mobile has its own housing mix and its own prices.
Heating needs in Mobile are light; a heat pump that handles the occasional cool night is usually all a home requires. Climate sets the baseline and the house sets the answer: a tight 2,140 sq. ft. home in Mobile may need less than 4 tons, a leaky or sun-heavy one more.
Before the Quote: Your Mobile House
A replacement is the right time to check Mobile ducts for leaks and missing insulation, especially in the attic. Most Mobile jobs are detached houses with open yard space for the condenser, which keeps the install simple.
For one finished attic or an addition, a single-zone mini-split usually costs less than extending the ducts.
Scheduling an AC Swap in Mobile
Plan replacements for the mildest part of the Mobile year; a mid-summer failure puts you in line behind everyone else. Refrigerant work requires EPA certification, and many Alabama localities require a permit for equipment swaps, so check both before you sign.
Nearby Alabama Markets
Elsewhere in Alabama, the same 16 SEER job costs:
- Huntsville, AL, 290 mi north: $10,690 to $12,880
- Birmingham, AL, 210 mi north: $10,670 to $12,860
- Montgomery, AL, 160 mi northeast: $10,670 to $12,860
- Tuscaloosa, AL, 180 mi north: $10,590 to $12,760
Nearby places such as Prichard, Chickasaw, Theodore, Spanish Fort and Fairhope can use the Mobile figures as a starting point.
See the Alabama HVAC cost guide for how Mobile compares with the rest of the state and how the payback math works. To size a system for your own house, use the AC size calculator; to compare heating and cooling options, try the heat pump calculator.
These figures start from statewide data, then adjust for the size of Mobile. Collect written bids from licensed local firms before you choose.
Quick Answers
Figures below use Alabama averages; energy prices as of October 2026.
Does a heat pump heat for less than natural gas in Alabama?
Yes, in Alabama. Running at COP 3, a heat pump gets 52,041 BTUs of heat per dollar; natural gas gets 48,600. It keeps that lead while power stays under about 21.1¢ per kWh (the Alabama average is 19.7¢). The margin shrinks on the coldest nights, when the COP drops.
Is electricity in Alabama expensive compared with other states?
Alabama pays 19.7¢ per kWh on average: 9% under the national figure of 21.7¢ and the 25th most expensive of 51. Cooling bills rise and fall with it.
Is a cold-climate heat pump needed in Alabama?
Worth considering. Alabama winter lows average about 35°F, mild enough for a standard unit most nights, cold enough that a cold-climate model or a backup source earns its keep in a freeze.
What does a heat pump save over electric baseboard in Alabama?
Roughly two-thirds of the bill at COP 3. With the Alabama average at 19.7¢ per kWh, baseboard heat costs about $57.65 per million BTU and a heat pump about $19.22.
What is the best season to replace an AC or furnace in Alabama?
The shoulder seasons, spring and fall, ahead of need. Summer days in Alabama average about 92°F, so have cooling work done by early spring. The first heat wave and the first cold snap fill every installer's calendar; replacing on your own schedule leaves room to compare quotes.
Is it smart to replace the furnace and AC together?
When both are aging, generally yes: one visit, one labor charge, and a matched coil and condenser, which the efficiency rating assumes. If one is fairly new, price each job on its own.
Check it for your own home: Central AC cost estimator or Heat pump cost calculator.
More HVAC Cost Guides
Alabama HVAC costs (statewide) · HVAC costs in every state
