AC Tonnage Calculator

Calculate AC Tonnage Requirements

About AC Tonnage Calculation

Air conditioning tonnage refers to the cooling capacity of an AC unit. One ton equals 12,000 BTU per hour.

Basic Formula:

Tonnage = (Room Volume × BTU per sq ft) / 12,000

Factors Considered:

  • Room dimensions (length × width × height)
  • Climate zone (hot, moderate, cool)
  • Insulation level
  • Number of windows
  • Sun exposure

Common Tonnage Sizes:

• 1.5 tons: 600-900 sq ft
• 2 tons: 900-1,200 sq ft
• 2.5 tons: 1,200-1,500 sq ft
• 3 tons: 1,500-1,800 sq ft

Proper sizing ensures efficient cooling, energy savings, and optimal comfort. Oversized units cycle frequently, while undersized units struggle to cool effectively.