Full HVAC System Replacement cost in Alabama (2026)
Across Alabama, full HVAC system replacement varies by your city's labor rates, climate and permit fees. Select your city below for a localized estimate.
full HVAC system replacement typically falls in this range across 12 Alabama cities — your exact estimate depends on local rates.
| City | Typical 2026 range |
|---|---|
| Birmingham, AL | $8,000 – $14,800 |
| Montgomery, AL | $7,950 – $14,700 |
| Mobile, AL | $7,850 – $14,550 |
| Huntsville, AL | $8,100 – $15,000 |
| Tuscaloosa, AL | $7,800 – $14,450 |
| Hoover, AL | $8,000 – $14,800 |
| Dothan, AL | $7,650 – $14,250 |
| Auburn, AL | $7,850 – $14,550 |
| Decatur, AL | $7,800 – $14,450 |
| Madison, AL | $8,100 – $15,000 |
| Florence, AL | $7,600 – $14,150 |
| Phenix City, AL | $7,850 – $14,550 |
Full HVAC System Replacement cost by type in Alabama
Typical 2026 ranges, localized to Alabama labor, climate and permits.
| Type | Alabama 2026 range |
|---|---|
| AC + gas furnace (split system) | $7,000 – $12,850 |
| Heat pump system (air-source) | $8,500 – $15,800 |
| Dual-fuel (hybrid heat pump + furnace) | $9,950 – $17,750 |
Cheapest time for full HVAC system replacement in Alabama
HVAC demand collapses in the mild shoulder seasons, so installers discount to keep crews busy. The most expensive time to buy is during a heat wave or cold snap, when a dead system forces a full-price emergency replacement.
Rebates & incentives in Alabama
The largest 2026 HVAC incentives target heat pumps; other equipment mainly qualifies for utility efficiency rebates.
The federal 25C tax credit (up to $2,000 for heat pumps; $600 for high-efficiency AC or furnaces) and the 25D credit ended December 31, 2025 under the One Big Beautiful Bill Act — neither is available for 2026 installs. The remaining federal help is the IRA Home Electrification & Appliance Rebates (HEAR): up to $8,000 toward a heat pump for households under 150% of area median income, paid at point of sale where a state has launched its program.
Verified July 2026. Rebate budgets deplete and program windows change fast — confirm current amounts and eligibility with your utility and the DSIRE database before you budget. Costadia does not administer these programs.
Full HVAC System Replacement in Alabama
How much does full HVAC system replacement cost in Alabama?
Across Alabama, full HVAC system replacement typically runs $7,600–$15,000 in 2026, depending on your city's labor rates, climate and permit fees. Florence is the most affordable (around $10,900) and Madison the most expensive (around $11,550).
Which Alabama city is cheapest for full HVAC system replacement?
Florence has the lowest typical full HVAC system replacement cost in Alabama at about $10,900, while Madison is the highest at about $11,550 — a gap driven mostly by local labor rates.
How do other HVAC options compare in Alabama?
In Birmingham, Alabama's largest market, full HVAC system replacement typically runs $8,000–$14,800. For comparison, furnace replacement runs $3,600–$6,500, central AC installation runs $5,800–$12,450, heat pump installation runs $6,350–$11,550. Each option has its own Alabama cost guide with city-by-city pricing.
Why does full HVAC system replacement cost vary across Alabama?
The three levers are local labor rates, climate zone and permit fees. This is a hot-climate region, so cooling capacity and efficiency are what drive value for full HVAC system replacement. Focus on a high-SEER2 system sized for long cooling seasons, and make sure ductwork and refrigerant charge are dialled in to avoid high summer bills.
When is the cheapest time to replace in Alabama?
The best window is spring and fall (mar–may, sep–oct), when demand drops and installers discount to keep crews busy — typically 5–15% off peak pricing. The priciest time is an emergency job during peak summer and mid-winter.
Does Alabama require a permit for full HVAC system replacement?
Most Alabama cities require a permit for full HVAC system replacement; it typically adds around $200 and is already included in the estimates above.
Other HVAC projects in Alabama
Weighing your options? Typical 2026 ranges below are localized to Birmingham, Alabama's largest market — open any project for the full statewide breakdown.