AC Tonnage Formula:
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AC tonnage calculation determines the appropriate air conditioning capacity needed for a room based on its square footage. Proper sizing ensures efficient cooling, energy savings, and optimal performance.
The calculator uses the AC tonnage formula:
Where:
Explanation: The formula calculates the required cooling capacity by multiplying room area by 25 BTU/sq ft (standard cooling load) and converting to tons.
Details: Correct AC sizing prevents energy waste, ensures comfortable temperatures, extends equipment life, and maintains proper humidity control. Oversized units short cycle, while undersized units run continuously.
Tips: Enter room area in square feet. Measure length × width for rectangular rooms. For irregular shapes, divide into sections and sum areas. Consider room height, insulation, and sun exposure for more precise calculations.
Q1: What is a "ton" in AC terminology?
A: One ton of cooling equals 12,000 BTU per hour, representing the heat removal capacity of one ton of ice melting over 24 hours.
Q2: How accurate is this calculation?
A: This provides a basic estimate. Professional load calculations consider windows, insulation, occupancy, appliances, and climate.
Q3: What if my room has high ceilings?
A: For rooms with ceilings over 8 feet, multiply the result by (ceiling height ÷ 8) for better accuracy.
Q4: Should I round up or down?
A: Round to the nearest standard unit size (1, 1.5, 2, 2.5, 3, 3.5, 4, 5 tons). Slightly undersizing is better than oversizing.
Q5: What about rooms with lots of windows?
A: Add 10-20% to the calculated tonnage for rooms with large south/west-facing windows or poor insulation.