Consider replacing your AC if it's roughly 10 to 15 years old and needs a major repair, uses R-22 refrigerant, or can't keep the house cool and dry. A proper replacement starts with a Manual J load calculation, uses matched equipment that meets Georgia's Southeast-region SEER2 minimum, and is installed under a local permit.
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A new central air system is a large purchase that you'll live with for well over a decade. The equipment brand matters less than many people think. The sizing, the installation quality, and the condition of your ductwork have a bigger effect on comfort, humidity control, and power bills.
Signs it may be time to replace
- The system is roughly 10 to 15 years old or more and needs a major repair, such as a compressor or a coil.
- It uses R-22 refrigerant, which is no longer produced in the U.S., so any leak becomes expensive to recharge.
- It runs constantly in summer but the house still feels muggy or certain rooms stay hot.
- Repairs are becoming a yearly event.
Efficiency standards in Georgia
Since January 1, 2023, federal efficiency standards use a newer test method and rating called SEER2. Georgia is in the Department of Energy's Southeast region, which has a higher minimum than northern states: new split-system central air conditioners installed here must meet at least 14.3 SEER2 for most smaller residential sizes (13.8 SEER2 for larger units). Higher-efficiency equipment costs more up front but can lower cooling bills in a climate where the AC runs for many months a year. ENERGY STAR certified models exceed the federal minimums.
New systems are also moving away from R-410A refrigerant to lower global-warming-potential refrigerants such as R-454B and R-32 under EPA rules. Ask your contractor which refrigerant a proposed system uses and how that affects future service.
What a quality installation includes
- A load calculation. A room-by-room calculation (ACCA Manual J) considers insulation, windows, orientation, and air leakage. Replacing "same size as before" can repeat an old mistake.
- Matched equipment. The outdoor unit, indoor coil, and furnace or air handler should be a matched, rated combination.
- Duct evaluation. Leaky or undersized ducts can undo the benefit of new equipment.
- Proper refrigerant work. Line sets should be flushed or replaced as needed, pressure-tested, evacuated with a vacuum pump, and charged to the manufacturer's specification.
- Permits and inspection. Most local jurisdictions in Metro Atlanta require a mechanical permit for system replacement. A licensed contractor should pull it.
- Registration and paperwork. Many manufacturers require product registration within a set time for full warranty coverage.
Comparing quotes
Get at least two or three written quotes and compare the same things: equipment model numbers and SEER2 ratings, whether a load calculation was done, what duct work is included, permit fees, labor warranty length, and who handles warranty registration. Ask your electric utility (Georgia Power or your local EMC) about any current rebates before you buy. When you're ready, request quotes from a licensed contractor in your area.
Frequently asked questions
What SEER2 rating is required in Georgia?
Georgia is in the federal Southeast region. Since 2023, new split-system central air conditioners installed here must meet at least 14.3 SEER2 for most smaller residential sizes, or 13.8 SEER2 for larger units. Higher ratings are available and can lower operating costs.
Should I replace my furnace when I replace my AC?
Not always, but the indoor coil and furnace or air handler should be compatible with the new outdoor unit. If the furnace is also old, replacing both together can save labor and ensure a properly matched system.
Do I need a permit to replace an AC in Atlanta?
Most local jurisdictions in Metro Atlanta require a mechanical permit for system replacement. A licensed contractor normally pulls the permit and schedules any required inspection.