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AC Tonnage Formula:
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AC tonnage calculation determines the appropriate air conditioning capacity needed for a space. One ton of cooling equals 12,000 BTU per hour, which is the amount of heat needed to melt one ton of ice in 24 hours.
The calculator uses the standard formula:
Where:
Explanation: This formula provides a basic estimate of AC tonnage requirements based on square footage, using a standard calculation of 25 BTU per square foot.
Details: Proper AC sizing is crucial for energy efficiency, comfort, and system longevity. An undersized unit will struggle to cool the space, while an oversized unit will short cycle, reducing efficiency and failing to properly dehumidify.
Tips: Enter the total square footage of the area to be cooled. For accurate results, measure each room's dimensions and calculate the total square footage. This calculator provides a basic estimate; professional HVAC assessment is recommended for precise sizing.
Q1: What factors affect AC tonnage requirements?
A: Besides square footage, factors include ceiling height, insulation quality, window size and orientation, local climate, number of occupants, and heat-generating appliances.
Q2: How many square feet does 1 ton of cooling cover?
A: Generally, 1 ton of cooling covers 400-600 square feet, but this varies based on the factors mentioned above.
Q3: What happens if my AC unit is oversized?
A: An oversized AC will cool too quickly, leading to short cycling, poor humidity control, reduced efficiency, and uneven temperatures.
Q4: Should I consider zoning for different areas?
A: Yes, for larger homes or multi-story buildings, zoning different areas can improve efficiency and comfort by allowing customized temperature control.
Q5: When should I consult an HVAC professional?
A: Always consult a professional for final AC sizing, as they can perform a Manual J calculation that considers all factors affecting your cooling needs.