1. What is HVAC Tonnage Calculation?

HVAC tonnage calculation determines the cooling capacity needed for a space, measured in tons of refrigeration. One ton equals 12,000 BTU/h of cooling capacity.

2. How Does the Calculator Work?

The calculator uses the HVAC tonnage formula:

Where:

• \( BTU \) — British Thermal Units per hour (BTU/h)
• \( 12000 \) — Conversion factor (1 ton = 12,000 BTU/h)

Explanation: This formula converts BTU/h cooling capacity to equivalent tons of refrigeration, which is the standard unit for HVAC system sizing.

3. Importance of HVAC Tonnage Calculation

Details: Proper HVAC tonnage calculation is essential for selecting the right-sized cooling system. Oversized systems short cycle, reducing efficiency and comfort, while undersized systems cannot maintain desired temperatures.

4. Using the Calculator

Tips: Enter the total BTU/h cooling capacity. The value must be greater than 0. The calculator will convert it to equivalent tons of refrigeration.

5. Frequently Asked Questions (FAQ)

Q1: What is a ton of refrigeration?
A: One ton of refrigeration equals the cooling capacity needed to melt one ton of ice in 24 hours, equivalent to 12,000 BTU/h.

Q2: How do I determine the BTU requirement for my space?
A: BTU requirements depend on room size, insulation, windows, climate, and other factors. Professional load calculations are recommended for accurate sizing.

Q3: What's the typical tonnage for residential systems?
A: Residential systems typically range from 1.5 to 5 tons, with 1 ton generally cooling about 400-600 square feet depending on conditions.

Q4: Why is proper sizing important?
A: Proper sizing ensures energy efficiency, optimal comfort, adequate humidity control, and longer system lifespan.

Q5: Can I use this for commercial systems?
A: Yes, the same conversion applies, though commercial systems often use much larger tonnages (10+ tons) and require more complex load calculations.