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HVAC Tonnage Formula:
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HVAC tonnage refers to the cooling capacity of an air conditioning system, measured in tons. One ton of cooling equals 12,000 BTU/h (British Thermal Units per hour), which represents the amount of heat required to melt one ton of ice in 24 hours.
The calculator uses the HVAC tonnage formula:
Where:
Explanation: This formula converts BTU/h cooling capacity to equivalent tons, which is the standard unit for sizing HVAC systems.
Details: Proper HVAC sizing is crucial for energy efficiency, comfort, and system longevity. Undersized systems struggle to cool spaces, while oversized systems short-cycle, reducing efficiency and increasing wear.
Tips: Enter the BTU/h value from your HVAC system specifications or load calculation. The result will show the equivalent tonnage for proper system sizing and comparison.
Q1: What is the relationship between tons and BTU/h?
A: One ton of cooling equals 12,000 BTU/h. This standardization helps in comparing different HVAC systems and ensuring proper sizing.
Q2: How do I determine the BTU/h needed for my space?
A: BTU/h requirements depend on room size, insulation, windows, climate, and heat-generating appliances. Professional load calculations are recommended for accurate sizing.
Q3: What are common residential HVAC tonnage sizes?
A: Common sizes range from 1.5 tons (18,000 BTU/h) for small apartments to 5 tons (60,000 BTU/h) for larger homes, typically in 0.5-ton increments.
Q4: Why is proper tonnage important?
A: Correct tonnage ensures efficient operation, proper dehumidification, consistent comfort, and prevents premature system failure due to overworking or short-cycling.
Q5: Can I use this for commercial HVAC systems?
A: Yes, the formula applies to all HVAC systems, though commercial systems often use larger units measured in the same tons and BTU/h principles.