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HVAC Replacement Cost in Alabama (2026)

HVAC replacement in Alabama typically runs $7,100–$16,800 for a complete 3-ton system replacement, with natural-gas furnaces with central AC as the dominant heating choice and roughly 2,700 heating degree days against 2,200 cooling degree days driving the seasonal load mix. Gulf Coast counties carry dewpoints above 75°F from May through October, pushing latent dehumidification load to over half of total cooling load — right-sized 16-SEER2 variable-speed inverter systems outperform oversized fixed-speed AC that short-cycles and leaves humidity behind.

State Alabama
Cities Covered 12
Typical complete 3-ton system replacement $7,100 – $16,800
BLS HVAC mechanic wage $23.94/hr

Alabama climate & load drivers

  • IECC climate zone: 2A-3A
  • Annual load split: Cooling-dominant — annual cooling load exceeds heating load (2,700 HDD / 2,200 CDD)
  • Dominant heating fuel: Natural gas — piped utility supply through state pipeline network
  • Dominant cooling system: Central air conditioning paired with separate heating equipment

Alabama licensing & permits

  • License status: Statewide license required
  • License board: Alabama Board of Heating, Air Conditioning, & Refrigeration Contractors (HACR) (official site)
  • Permit: most cities require for full system replacement

How HVAC replacement costs vary in Alabama

State-specific code or insurance rule: Alabama Code §34-31A-3 requires a separate HACR license for any HVAC work over $750 — and the HACR Board (not the Home Builders Licensure Board) issues residential certifications, with EPA Section 608 refrigerant certification stacked on top for any system containing controlled refrigerant.

Cities in Alabama

Compare HVAC replacement pricing for 12 cities across Alabama.

Auburn, AL

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Birmingham, AL

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Decatur, AL

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Dothan, AL

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Florence, AL

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Hoover, AL

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Huntsville, AL

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Madison, AL

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Mobile, AL

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Montgomery, AL

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Phenix City, AL

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Tuscaloosa, AL

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More state guides

Pricing ranges reflect Alabama market labor (BLS OEWS HVAC mechanic mean $23.94/hr) and Woogoro regional cost modeling. For the most localized estimate, see your nearest city page above.