# AC Repair Alpharetta GA | AC & HVAC Repair Help > AC repair in Alpharetta, GA: aging 1990s systems, two-story homes with two systems, zoning, repair-or-replace factors, and how to reach a participating HVAC contractor in north Fulton. URL: https://georgiahvacrepair.us/ac-repair-alpharetta-ga/ Georgia HVAC Repair is an independent referral service that connects Alpharetta homeowners, landlords, and property managers with participating independent HVAC contractors serving north Fulton County. AC repair and HVAC repair are the main services. Call, and your call is routed to a participating contractor covering your ZIP code when one is available. ## Common AC and heating problems in Alpharetta Much of Alpharetta was built in the 1990s, and many homes are two stories with two separate systems. A lot of those original systems are at or past the end of their expected life. - **Blowing warm air**: Often a failed capacitor, a stopped outdoor fan, low refrigerant from a leak, or a clogged filter. - **Upstairs too hot**: Two-story homes fight heat rising to the second floor. An undersized upstairs system, attic ducts, or zoning problems are common causes. - **Frozen coil or iced lines**: Usually restricted airflow or low refrigerant. Turn cooling off and let it thaw before the technician arrives. - **Water around the indoor unit**: Georgia humidity means lots of condensate. A clogged drain line backs it up into the pan or onto the floor. ## When to call an HVAC contractor in Alpharetta - The breaker trips again after one reset - The outdoor unit hums but the fan doesn't spin - Ice forms on the lines or comes back after thawing - Water keeps collecting at the indoor unit - Burning smell, grinding, or banging - Any refrigerant, electrical, or gas work ## Georgia climate and local considerations in Alpharetta **A 1990s housing boom.** More homes in Alpharetta were built between 1990 and 1999 than in any other decade, more than 8,600, according to real estate data compiled from Census figures. Many of those homes have had their original AC replaced once already; others are still running original or second-generation equipment that's well past the 10-year point where ENERGY STAR suggests considering replacement ([ENERGY STAR](https://www.energystar.gov/saveathome/heating-cooling/replace)). **Two systems, two sets of problems.** Larger two-story homes often have a separate system for each floor, with the upstairs air handler in the attic. Attic equipment works in extreme heat, and its condensate drain and safety pan matter: an overflow there can stain or damage the ceiling below. Some homes use one system with zoning dampers instead, which can fail and leave one floor uncomfortable. **Refrigerant and efficiency.** Systems installed before about 2010 likely use R-22, which hasn't been produced since 2020. Since 2023, new split-system ACs sold in Georgia must meet at least 14.3 SEER2 (U.S. Department of Energy), so replacing a 1990s or early-2000s system usually brings a real efficiency gain. **Check the license.** Georgia requires HVAC contractors to hold a Conditioned Air Contractor license from the State Construction Industry Licensing Board, overseen by the Georgia Secretary of State. You can look up a license on the Secretary of State's verification site before work starts. Replacements generally need a permit; ask the contractor who pulls it. ## Repair or replace your AC in Alpharetta? There's no single age or dollar figure that decides it, but these factors matter most: how old the system is, what failed (a capacitor is a small repair; a compressor or coil is a major one), the repair quote, how efficient the system is, whether it was sized correctly for the house, and its overall condition. In a two-system home, the two units may be on different timelines. A contractor can tell you whether to replace one now or plan both together; matched indoor and outdoor equipment generally performs best. ## HVAC questions from Alpharetta **Why is my upstairs so much hotter than downstairs?** Heat rises, and upstairs systems often serve attic-adjacent rooms with ducts in a hot attic. Common causes are an undersized or failing upstairs unit, leaky attic ducts, poor attic insulation, or zoning dampers that aren't working. A technician can check each. **How much does AC repair cost in Alpharetta?** There's no Alpharetta-specific price survey. HomeAdvisor's 2026 national data puts most AC repairs between $172 and $664, averaging about $417, plus a diagnostic fee of $75 to $200. Attic equipment can take longer to service. **My Alpharetta home has two AC systems. Do I replace both at once?** Not necessarily. If both are old and one fails, replacing both can save on labor and keep them matched, but a newer second system may have years left. Get a contractor's assessment of each. **How do I check an HVAC contractor's license in Georgia?** Georgia licenses HVAC contractors as Conditioned Air Contractors through the State Construction Industry Licensing Board. Look up the contractor's name or license number on the Georgia Secretary of State's license verification site. **Is Georgia HVAC Repair a Alpharetta HVAC company?** No. Georgia HVAC Repair is an independent referral service. It connects Alpharetta callers with participating independent HVAC contractors who serve the area; those contractors do the work. Referral disclosure: Georgia HVAC Repair is an independent referral service. We help connect homeowners with participating HVAC service providers and may receive compensation for referrals. Repairs and other services are performed by independent contractors. Phone: (770) 679-7684.