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Tonnage Formula:
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AC tonnage calculation determines the required cooling capacity of an air conditioning system based on the BTU (British Thermal Units) requirement. One ton of cooling equals 12,000 BTU per hour, which represents the amount of heat needed to melt one ton of ice in 24 hours.
The calculator uses the simple formula:
Where:
Explanation: This calculation converts the required cooling capacity from BTU to tons, which is the standard measurement for air conditioning system sizing.
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, leading to humidity problems and reduced efficiency.
Tips: Enter the total BTU requirement for your space. This value should be determined through a proper load calculation that considers room size, insulation, windows, climate, and other factors.
Q1: How do I determine the BTU requirement for my space?
A: BTU requirement is calculated based on square footage, ceiling height, insulation quality, number of windows, climate zone, and other factors. Professional load calculations are recommended.
Q2: What's the difference between BTU and tons?
A: BTU measures cooling capacity, while tons represent the same capacity in different units (1 ton = 12,000 BTU/hour). Tons are traditionally used for AC system sizing.
Q3: What size AC do I need for a typical room?
A: A general rule is 20 BTU per square foot, but this varies significantly based on insulation, climate, and other factors. Always consult with an HVAC professional.
Q4: Can I use this calculation for heat pumps?
A: Yes, the same tonnage calculation applies to heat pumps in cooling mode, as they use the same measurement for cooling capacity.
Q5: Why is proper AC sizing important?
A: Proper sizing ensures optimal energy efficiency, adequate dehumidification, consistent comfort, and longer equipment lifespan while preventing frequent cycling and temperature fluctuations.