1. What is HVAC Tonnage Calculation?

HVAC tonnage calculation determines the cooling capacity needed for a space. One ton of refrigeration equals 12,000 BTU/h (British Thermal Units per hour), which represents the amount of heat needed to melt one ton of ice in 24 hours.

2. How Does the Calculator Work?

The calculator uses the tonnage formula:

Where:

• \( Ton \) — Tons of refrigeration
• \( BTU \) — British Thermal Units per hour (BTU/h)

Explanation: This formula converts BTU/h to tons of refrigeration, which is the standard measurement for air conditioning capacity.

3. Importance of Tonnage Calculation

Details: Proper tonnage calculation is essential for selecting the right size HVAC system. An undersized unit won't cool effectively, while an oversized unit will cycle too frequently, reducing efficiency and lifespan.

4. Using the Calculator

Tips: Enter the BTU/h value. The calculator will automatically convert it to tons of refrigeration. Ensure the BTU value represents the total cooling capacity needed for your space.

5. Frequently Asked Questions (FAQ)

Q1: How many square feet does one ton cool?
A: Generally, one ton cools 400-600 square feet, but this varies based on climate, insulation, ceiling height, and other factors.

Q2: What's the difference between BTU and tonnage?
A: BTU measures heat energy, while tonnage represents cooling capacity. One ton equals 12,000 BTU/h.

Q3: How do I calculate BTU requirements for a room?
A: Multiply square footage by 20-25 BTU per square foot, then adjust for factors like sunlight, insulation, and occupancy.

Q4: Can I use this for heat pump sizing?
A: Yes, the same tonnage calculation applies to both air conditioners and heat pumps for cooling capacity.

Q5: What happens if I choose the wrong tonnage?
A: Incorrect sizing leads to poor efficiency, inadequate cooling, higher energy bills, and reduced equipment lifespan.