Suwanee sits in Gwinnett County along the northern edge of metro Atlanta, and the majority of its housing was built after 2000. Subdivisions like The River Club, Aberdeen, Grand Cascades, and Laurel Springs are filled with large single-family homes on half-acre or smaller lots. Newer construction means many systems are reaching the 15-to-20-year mark where compressors, heat exchangers, and refrigerant lines begin to show wear. North Georgia summers push air conditioners to run nearly nonstop from June through September, and the high humidity adds a latent cooling load on top of the temperature demand.