AC Installation Cost in Dunwoody, Georgia

Dunwoody Weather and HVAC Load

Dunwoody logs 2,980 heating degree days and 1,728 cooling degree days in a normal year, based on the closest NOAA weather station. Neither season dominates in Dunwoody. That balance is a big reason heat pumps and dual-fuel systems sell well in Georgia. Count on roughly 49 nights below 32°F and 53 afternoons past 90°F in a typical year. Snowfall averages about 1 inches. On the cooling side, a 2,000 sq ft house here usually needs around 3 tons. A tight, well-insulated house may get by with half a ton less.

Dunwoody Housing Stock

Census figures put the median build year in Dunwoody at 1984, so a typical house here has about 42 years on it. A lot of these homes are on their second or third system by now. The ductwork is usually original, and leaky joints are common. About 12,000 households here own their home, 54.4% of the occupied total. With a median household income of $109,116 and a median home value of $579,400, local labor rates come out above the national middle in our model.

DeKalb County had 1 hail day and 28 days with damaging thunderstorm winds from 2020 through 2025, according to NOAA storm records. The largest hail reported was 1.75 inches across. Storms here are more likely to cause power surges than coil damage, so a surge protector on the outdoor unit is worth the small cost. DeKalb County also had 3 tornado days in that period.

When It Makes Sense

• The AC is 12 to 15 years old or more
• It still runs on R-22 refrigerant
• The house can't reach the thermostat setting on hot afternoons
• It has had more than one refrigerant leak

What Moves the Price

• SEER2 rating and whether the compressor is single-stage or variable-speed
• The pad, permit and refrigerant (R-410A or the newer R-454B)
• Whether the coil and line set also need replacing
• Electrical work such as a new disconnect, breaker or wiring
• Tonnage, based on house size and local climate

We raised the national figures about 28% for Dunwoody using local income, home values and the equipment size this climate needs. Real bids can still come in outside the range, so collect three written quotes.

What the Quote Should Cover

• Removing the old condenser and coil
• Refrigerant charge and a leak test
• Startup, an airflow check and warranty registration
• The electrical disconnect and wiring
• The new condenser, coil and, if needed, line set

Georgia Permits, Efficiency Rules and Rebates

Georgia is in the DOE's Southeast region, where new split central air conditioners need at least 14.3 SEER2 (13.8 SEER2 for systems of 45,000 BTU/h and up). Equipment replacements in Dunwoody generally need a mechanical permit, and a reputable contractor will pull it for you. Ask for their Georgia license or registration number and a certificate of insurance with the quote. The federal 25C tax credit ended for equipment installed after December 31, 2025, so incentives now come mostly from utilities and state programs. Check your electric and gas utility's rebate page before you pick equipment.

Before You Hire

• Buy the condenser and coil as a matched set, or you may void the manufacturer warranty.
• Ask what federal, state or utility incentives apply to the model you're quoted.
• Ask for a Manual J calculation. "Same size as the old one" isn't sizing.

AC Installation Questions from Dunwoody Homeowners

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AC Installation Near Dunwoody

• Sandy Springs $5,300 to $12,000
• Brookhaven $5,700 to $12,800
• Roswell $5,500 to $12,400
• Valdosta $3,900 to $8,700
• Smyrna $4,600 to $10,500
• Stonecrest $4,000 to $9,100
• Marietta $4,300 to $9,600
• Albany $3,900 to $8,900