Three-Ton Units Cool 30,000 to 36,000 Square Feet When Equipment Age Remains Within Service Life
https://precisionhvacrepaircenter.timeforchangecounselling.com/standard-warranty-coverage-benchmarks-determine-your-hvac-system-s-useful-life-and-protection-duration
A 3-ton HVAC unit typically cools between 30,000 and 36,000 square feet, but that capacity depends heavily on how old your equipment is and whether you are approaching its end-of-life threshold