1. What is AC Tonnage Calculation?

AC tonnage calculation determines the appropriate air conditioning capacity needed for a space. One ton of cooling equals 12,000 BTU per hour, which represents the amount of heat required to melt one ton of ice in 24 hours.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( Ton \) — Cooling capacity in tons
• \( BTU \) — British Thermal Units per hour

Explanation: This formula converts BTU rating to standard AC tonnage, which is the primary measurement used in the HVAC industry for sizing air conditioning systems.

3. Importance of Proper AC Sizing

Details: Correct AC tonnage calculation is essential for energy efficiency, proper humidity control, and system longevity. Oversized units short cycle, while undersized units struggle to maintain temperature.

4. Using the Calculator

Tips: Enter the BTU rating of your air conditioning unit or the calculated BTU requirement for your space. The calculator will convert it to the equivalent tonnage.

5. Frequently Asked Questions (FAQ)

Q1: Why is 12,000 BTU equal to one ton?
A: This measurement dates back to when cooling was achieved by melting ice. One ton refers to the cooling effect of melting one ton of ice over 24 hours.

Q2: What's the typical tonnage for residential AC units?
A: Residential units typically range from 1.5 to 5 tons, with average homes requiring 2-4 tons depending on square footage and climate.

Q3: How many square feet does one ton cool?
A: Roughly 400-600 square feet, but this varies significantly based on climate, insulation, ceiling height, and other factors.

Q4: Should I size up for extremely hot climates?
A: In very hot climates, you may need slightly more capacity, but professional Manual J calculation is recommended for precise sizing.

Q5: What happens if my AC is oversized?
A: Oversized AC units short cycle (turn on/off frequently), reducing efficiency, increasing wear, and providing poor humidity control.