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Tonnage Formula:
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The Area To Tonnage calculation converts area measurements (in square feet) and a BTU factor to determine the required cooling capacity in tons. This is commonly used in HVAC system design to properly size air conditioning units for spaces.
The calculator uses the tonnage formula:
Where:
Explanation: This formula calculates the required cooling capacity by multiplying the area by the BTU factor per square foot, then converting the result to tons by dividing by 12,000.
Details: Proper tonnage calculation is essential for designing efficient HVAC systems. Undersized units will struggle to cool spaces, while oversized units will cycle too frequently, reducing efficiency and increasing costs.
Tips: Enter the area in square feet and the appropriate BTU factor for your application. Common BTU factors range from 20-30 BTU/sq ft for residential applications, but may vary based on climate, insulation, and other factors.
Q1: What is a typical BTU factor for residential cooling?
A: For most residential applications, a factor of 20-25 BTU/sq ft is typical, but this can vary based on climate, insulation quality, and other factors.
Q2: Why divide by 12,000 in the formula?
A: One ton of cooling capacity equals 12,000 BTU per hour, so we divide by 12,000 to convert BTU to tons.
Q3: How accurate is this calculation?
A: This provides a rough estimate. Professional HVAC calculations consider many additional factors like ceiling height, window area, insulation, and local climate.
Q4: Can this be used for commercial spaces?
A: Yes, but commercial spaces often require more detailed calculations due to higher occupancy, equipment heat loads, and different usage patterns.
Q5: What if my space has unusual characteristics?
A: For spaces with high ceilings, large windows, or special equipment, consult an HVAC professional for a more accurate assessment.