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Tonnage Formula:
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The cassette AC tonnage calculation converts British Thermal Units (BTU) per hour to tons of refrigeration capacity. This conversion is essential for properly sizing cassette air conditioning systems for various spaces.
The calculator uses the tonnage formula:
Where:
Explanation: One ton of refrigeration equals 12,000 BTU per hour, which represents the amount of heat required to melt one ton of ice in 24 hours.
Details: Proper tonnage calculation is crucial for selecting the right cassette AC unit. Undersized units will struggle to cool the space, while oversized units will short cycle, reducing efficiency and increasing humidity.
Tips: Enter the BTU rating of your cassette AC unit. The value must be greater than zero. The calculator will automatically convert to tons of refrigeration capacity.
Q1: Why is 12,000 BTU equal to 1 ton?
A: This conversion comes from the historical definition where one ton of refrigeration represents the cooling capacity needed to freeze one ton of water at 32°F to ice at 32°F in 24 hours.
Q2: How do I determine the right tonnage for my space?
A: Generally, you need about 20 BTU per square foot of living space, but this can vary based on ceiling height, insulation, climate, and other factors.
Q3: What's the difference between cassette AC and other AC types?
A: Cassette AC units are ceiling-mounted systems that provide four-way air discharge, making them ideal for commercial spaces and large rooms with even cooling distribution.
Q4: Can I use this calculator for other AC types?
A: Yes, the BTU to ton conversion is universal for all air conditioning systems, though sizing requirements may differ between system types.
Q5: What happens if I choose the wrong tonnage?
A: Incorrect tonnage can lead to inefficient operation, poor humidity control, increased energy costs, and reduced equipment lifespan.