South · Climate zones 2–3
HVAC service in Alabama
Alabama is a cooling-first HVAC market. Long, humid summers from May through September keep air conditioners and heat pumps running for months, and the Gulf Coast around Mobile sees some of the highest humidity in the country. Winters are short, but cold snaps still push heat pumps onto backup heat.
- 486 ZIP codes covered
- 301 cities and towns
- Licensed contractors
Alabama HVAC at a glance
- Climate
- Hot-humid (IECC zones 2–3)
- What it means
- Long cooling seasons and high humidity. Correct sizing, duct sealing and clean condensate drains matter as much as raw cooling power.
- Common systems
- Heat pumps, Gas furnace + central AC, Crawl space and attic ductwork, Dehumidifiers
- Coverage
- 486 ZIP codes in 301 cities and towns
- Region
- South
Homes & equipment
Heating and cooling in Alabama
Heat pumps are the most common system in newer homes because they handle mild winters efficiently. Older homes in Birmingham, Montgomery and Huntsville often pair a gas furnace with central AC, and many have ductwork in vented crawl spaces or hot attics.
Humidity control matters as much as temperature. Oversized systems cool the air quickly but leave homes clammy, so load calculations and properly set fan speeds make a noticeable difference to comfort.
Common problems
HVAC problems we see in Alabama
Humidity and mold
High dew points cause sweating ducts, mold on supply registers and musty crawl spaces when systems short-cycle or ducts leak.
Clogged condensate drains
Air conditioners remove a lot of water in Alabama summers, and algae-clogged drains are a frequent cause of shutdowns and ceiling leaks.
Storm-season power problems
Thunderstorms and tropical systems bring surges and outages that damage capacitors, control boards and compressors.
City guides
HVAC city guides in Alabama
Other Alabama areas in our network
Contractors in our network also cover Montgomery, Huntsville, Mobile, Tuscaloosa, Anniston, Gadsden, Decatur, Athens, Bessemer, Cullman, Jasper, Auburn, and 288 more communities. Enter your ZIP code in the request form to check yours.
Recommended
Services Alabama homeowners need most
Contractor licensing in Alabama
Alabama licenses HVAC contractors through the Alabama Board of Heating, Air Conditioning and Refrigeration Contractors. You can verify a certification on the Board's website before work starts.
Utilities in Alabama
Alabama Power serves most of the state, with TVA-supplied municipal utilities and cooperatives in the north. Spire Alabama and municipal systems supply natural gas in many cities.
FAQ
Alabama HVAC questions
Is a heat pump a good choice in Alabama?+
Usually yes. Alabama's mild winters suit heat pumps well, and a modern unit handles both cooling and most heating. Homes in the northern hills sometimes add gas backup for the coldest nights.
Why does my Alabama home feel humid even with the AC running?+
The system may be oversized, the fan may run continuously, or ducts may be leaking humid attic or crawl space air. A tech can check airflow, refrigerant charge and duct leakage.
Other states in the South
HVAC help in Alabama
Call to be connected with a licensed HVAC contractor serving your ZIP code, or send a request online.