What Size AC Unit Do I Need? Tonnage Guide by Square Footage (2026)
What Size AC Unit Do I Need? Tonnage by Square Footage (2026) Most Florida homes between 1,000 and 2,000 square feet need a 2.5- to 4-ton unit — roughly one ton per 400–600 square feet. But square footage alone isn’t enough; insulation, windows, ceilings, and Florida’s heat all shift the number. Only a Manual J…