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AC Tonnage Formula:
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AC tonnage calculation determines the appropriate air conditioning capacity needed for a space based on its square footage. One ton of cooling capacity equals 12,000 BTU per hour.
The calculator uses the formula:
Where:
Explanation: This formula provides a basic estimate of AC tonnage requirements based on standard cooling load calculations.
Details: Proper AC sizing is crucial for energy efficiency, comfort, and system longevity. An undersized unit won't cool effectively, while an oversized unit will short cycle, reducing efficiency and failing to properly dehumidify.
Tips: Enter the total square footage of the space to be cooled. For accurate results, consider factors like ceiling height, insulation, window area, and climate which may require adjustments to this basic calculation.
Q1: What is a "ton" in AC terminology?
A: 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.
Q2: Is this calculation accurate for all situations?
A: This provides a basic estimate. For precise sizing, professional Manual J calculations that consider insulation, windows, orientation, and local climate are recommended.
Q3: What other factors affect AC sizing?
A: Ceiling height, number of windows, insulation quality, local climate, number of occupants, and heat-generating appliances all affect cooling requirements.
Q4: How does oversizing affect AC performance?
A: Oversized units cool too quickly, leading to short cycling, poor humidity control, reduced efficiency, and uneven temperatures.
Q5: Should I round up or down when selecting AC size?
A: It's generally better to slightly undersize than oversize. If between sizes, choose the smaller unit for better humidity control, unless you're in an extremely hot climate.