AC Tonnage Formula:
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AC tonnage calculation determines the cooling capacity required for a room based on its area. One ton of AC equals 12,000 BTU/hour of cooling capacity. Proper sizing ensures efficient cooling and energy consumption.
The calculator uses the AC tonnage formula:
Where:
Explanation: The formula calculates the required cooling capacity by multiplying room area by standard BTU requirements and converting to tons.
Details: Correct AC sizing is crucial for energy efficiency, comfort, and equipment longevity. Oversized units cycle frequently, while undersized units struggle to cool effectively.
Tips: Enter room area in square feet. The calculator will determine the appropriate AC tonnage. Consider additional factors like ceiling height, insulation, and sun exposure for precise sizing.
Q1: Why is 25 BTU per square foot used?
A: This is a standard factor for average rooms with 8-foot ceilings and moderate insulation. Adjustments may be needed for specific conditions.
Q2: What if my room has high ceilings?
A: For ceilings higher than 8 feet, multiply the result by (ceiling height ÷ 8) for more accurate sizing.
Q3: How does insulation affect AC sizing?
A: Poor insulation may require 30-35 BTU/sq ft, while well-insulated rooms may need only 20 BTU/sq ft.
Q4: What about room orientation and windows?
A: South-facing rooms or those with large windows may require additional cooling capacity due to solar heat gain.
Q5: Can I use this for entire house calculation?
A: Calculate each room separately and sum the results, or use total square footage with professional adjustments for whole-house sizing.