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AC Tonnage Formula:
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The AC Tonnage Formula calculates the cooling capacity needed for a space by converting British Thermal Units (BTU) to tons of refrigeration. One ton of refrigeration equals 12,000 BTU per hour.
The calculator uses the AC Tonnage formula:
Where:
Explanation: This formula converts the cooling capacity from BTU/h to tons, which is a standard measurement in the HVAC industry for air conditioning system sizing.
Details: Proper AC tonnage calculation is essential for selecting the right-sized air conditioning unit for a space. An undersized unit will struggle to cool the area, while an oversized unit will cycle too frequently, reducing efficiency and increasing wear.
Tips: Enter the BTU value in BTU/h. The value must be greater than 0. The calculator will convert it to tons of refrigeration.
Q1: What is a ton of refrigeration?
A: A ton of refrigeration is a unit of power that describes the heat extraction capacity of air conditioning and refrigeration equipment. One ton equals 12,000 BTU per hour.
Q2: How many BTU are needed to cool a room?
A: As a general rule, you need about 20 BTU for each square foot of living space, but this can vary based on ceiling height, insulation, climate, and other factors.
Q3: What size AC unit do I need for my home?
A: For a rough estimate, calculate your home's square footage and multiply by 20. Then divide by 12,000 to get the required tonnage. For precise sizing, consult an HVAC professional.
Q4: Can I use this calculation for commercial spaces?
A: Yes, the formula works for any space, but commercial calculations often require more complex considerations like occupancy, equipment heat output, and building orientation.
Q5: What happens if I choose the wrong AC size?
A: An undersized AC will run constantly and struggle to maintain temperature. An oversized AC will short cycle, leading to poor humidity control, higher energy costs, and reduced equipment lifespan.