HVAC companies in Birmingham, AL
Compare up to three local Birmingham HVAC contractors from Henry's vetted bench — AC repair, furnace and heat pump service, and full system replacement.
Birmingham summers push air conditioners hard for five or six months a year, and the city's older housing stock — from Forest Park bungalows to Crestwood ranch homes with attic-installed air handlers — means ductwork, humidity control, and equipment age all factor heavily into what a repair or replacement actually costs here. Homeowner Henry connects Jefferson County homeowners with vetted local HVAC contractors and breaks down what to expect on price, permits, and hiring. Read our guides on AC repair costs, full system replacement costs, how to choose a contractor, and what local HVAC companies charge, or get matched with a vetted Birmingham HVAC pro now.
The Henry Standard
Every HVAC contractor in our network agrees to three things.
Show up
Call back. Keep appointments. And if something changes, communicate it.
Quote honestly
Equipment, scope, permit, and price in writing — so you know what you're agreeing to.
Finish the work
See the job through, pull the permit, and pass inspection before calling it finished.
Nothing revolutionary. Just the way we believe doing business should still be done.
How Henry matches you with Birmingham HVAC contractors
- Step 1
Tell Henry what the system is doing
Your ZIP, whether it's a repair or a replacement, and how soon you need it handled. Two minutes, four questions.
- Step 2
Pros are already vetted
Only three Henry Standard HVAC contractors in your Birmingham-area ZIP get your request — pros we've checked for responsiveness, references and written estimates.
- Step 3
Compare up to three quotes
You hear from three HVAC contractors at most — never a list of twenty — and every estimate comes in writing. You pick, or pick nobody.
What HVAC work costs in Birmingham
| AC repair (minor, refrigerant/capacitor) | $150 - $450 |
| AC repair (compressor or coil) | $600 - $2,200 |
| Central AC replacement (3-ton, standard efficiency) | $4,500 - $7,500 |
| Full HVAC system replacement (AC + furnace or air handler) | $7,500 - $13,500 |
| Heat pump system replacement | $6,500 - $13,000 |
| Ductwork repair/sealing (partial) | $500 - $2,000 |
| Full duct system replacement (older homes, crawl space) | $3,500 - $9,000 |
| Annual maintenance/tune-up (per visit) | $100 - $200 |
| Smart thermostat install | $150 - $400 |
| Mechanical permit fee (Birmingham) | $125 - $250 |
Ranges are general estimates gathered from homeowner-reported quotes in the Birmingham area, not an offer or a quote for your project.
When to schedule HVAC work in Birmingham
Birmingham sits in a humid subtropical climate zone, meaning summer cooling loads run long and heavy — AC units often operate nearly nonstop from May through September, and humidity control matters as much as raw temperature. Winters are mild on average but bring occasional hard freezes and ice events, so heat pumps need functioning backup heat strips or a paired furnace for the coldest nights. This mixed-load profile is why many Birmingham contractors recommend dual-fuel or heat pump systems sized carefully for both jobs rather than oversized cooling-only equipment.
Permits and HOA rules
Inside Birmingham city limits, mechanical permits for HVAC replacement or new installation are issued by the City of Birmingham Department of Planning, Engineering & Permits, based at City Hall, 710 20th Street North, Room 210 1. The mechanical permit application requires the contractor's state HVAC license number, and fees generally include a minimum permit charge plus a per-thousand-dollar valuation fee 2. For homes in unincorporated Jefferson County — including many neighborhoods over the mountain and in outlying areas — permits go through Jefferson County's Development Services/Building Division rather than the city, under the county's adopted building code 3. Homeowners should confirm which jurisdiction applies to their address before assuming either office handles the permit, since city and county lines run irregularly through the metro.
Licensing and insurance in Alabama
Alabama requires HVAC contractors doing work above a minimal dollar threshold to hold a license from the Alabama Board of Heating, Air Conditioning & Refrigeration Contractors (HACR), based in Montgomery. Homeowners can verify a contractor's license status and standing directly through the Board's online license lookup tool before signing a contract 4. A valid state HVAC license number is also required on Birmingham mechanical permit applications, so a contractor who can't produce one is a red flag 2.
Why Birmingham's older housing stock changes the math
Neighborhoods like Forest Park, Highland Park, Redmont Park, and Avondale are full of homes built between the 1900s and 1950s, many with crawl space foundations, undersized or leaky ductwork, and air handlers wedged into hot attics rather than conditioned basements or closets. That combination adds real cost to both repairs and replacements: ducts routed through a 130-degree attic or a damp crawl space lose efficiency and develop leaks faster than ducts in a conditioned space.
When contractors quote a system replacement in these neighborhoods, a chunk of the estimate often goes to duct sealing, insulation, or partial duct replacement rather than the condenser and air handler alone. Homeowners who skip this step frequently end up with a new high-efficiency system that still can't keep the house comfortable because the distribution system is the actual bottleneck.
Humidity control matters as much as temperature
Birmingham's long, muggy cooling season means an undersized or oversized system can leave a home feeling clammy even when the thermostat reads the target temperature. Proper equipment sizing (a Manual J load calculation, not a rule-of-thumb estimate based on square footage) is especially important here because oversized systems cool the air quickly but shut off before they've pulled enough moisture out.
Some homeowners in humid pockets — especially homes near tree cover in Norwood or along the creek bottoms near Avondale — add a dedicated dehumidifier tied into the ductwork. This is a reasonable upgrade to discuss with a contractor rather than a sign that the AC itself is failing.
Mixed heating needs: furnace, heat pump, or dual fuel
Because Birmingham winters are mild most of the time but include occasional hard freezes, homeowners have real choices between a heat pump, a gas furnace, or a dual-fuel setup that switches to gas when temperatures drop below a set threshold. Heat pumps have become more attractive as electric utility incentives shift, but they need functioning backup heat strips sized for the rare cold snap.
Homes converting from a gas furnace to an all-electric heat pump should also budget for electrical work, since the switch generally requires an upgraded circuit and, depending on the jurisdiction, its own permit alongside the mechanical permit.
Permits and inspections: city versus county
Whether a homeowner needs a City of Birmingham mechanical permit or a Jefferson County permit depends entirely on which jurisdiction the property sits in — this is not always obvious from a mailing address alone. Homes inside Birmingham's corporate limits go through the Department of Planning, Engineering & Permits at City Hall, while homes in unincorporated parts of the county go through Jefferson County's Building Division.
A reputable HVAC contractor pulls the permit as part of the job and schedules the required inspection; a contractor who suggests skipping the permit to save time or money is taking on liability that ultimately falls back on the homeowner if there's ever an insurance claim or resale inspection.
Rebates and incentives worth checking
Alabama Power has run rebate programs for smart thermostats and high-efficiency heat pumps, including incentives tied to switching from gas to an electric heat pump meeting a minimum SEER or SEER2 rating 5. Program terms, rebate amounts, and eligibility change over time, so homeowners should confirm current details directly with Alabama Power or ask their contractor to check eligibility before assuming a rebate applies.
Federal tax credits for qualifying high-efficiency HVAC equipment may also be available in a given tax year; a licensed contractor or tax professional can confirm which upgrades qualify for the year the work is done.
Areas Henry covers
Forest Park · Crestwood · Highland Park · Avondale · Southside · Norwood · Five Points South · Roebuck · English Village · Redmont Park · Homewood-adjacent Hollywood · Vestavia Hills-adjacent areas
Common questions
How much does AC repair cost in Birmingham?
Minor repairs like a capacitor or refrigerant recharge typically run $150 to $450. Bigger repairs involving a compressor or evacuator coil can run $600 to $2,200, especially on older systems where the part has to be sourced or the refrigerant type is being phased out.
Do I need a permit to replace my AC unit in Birmingham?
Yes. Replacing or installing HVAC equipment requires a mechanical permit whether you're inside Birmingham city limits or in unincorporated Jefferson County — the jurisdiction just determines which office issues it.
How do I know if an HVAC contractor is licensed in Alabama?
You can look up any contractor's license status directly through the Alabama Board of Heating, Air Conditioning & Refrigeration Contractors' online license lookup tool before hiring.
Are heat pumps a good fit for Birmingham's climate?
Yes for most homes, given the mild winters, but they need properly sized backup heat for the occasional hard freeze. A dual-fuel system pairing a heat pump with a gas furnace is also common in the metro.
Why do older Birmingham homes need duct work along with a new AC system?
Many homes over the mountain and in close-in neighborhoods have ductwork run through unconditioned attics or crawl spaces, which leaks air and loses efficiency over time. A new system won't perform to spec if the ducts feeding it are undersized or leaking.
Does Alabama Power offer rebates for new HVAC equipment?
Alabama Power has offered rebates for smart thermostats and high-efficiency heat pumps in the past, but program terms change, so confirm current eligibility and rebate amounts directly with Alabama Power or your contractor before counting on a specific number.
What's the difference between the city and county permit offices?
The City of Birmingham Department of Planning, Engineering & Permits handles permits inside city limits, while Jefferson County's Development Services Department handles permits for unincorporated areas. Your property's exact jurisdiction determines which one applies.
Birmingham guides from The Henry Files
Nearby Alabama markets
Sources
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