1. What is a Split AC Tonnage Calculator?

Definition: This calculator converts air conditioning cooling capacity from BTU/hr to tons of refrigeration.

Purpose: It helps HVAC professionals and homeowners determine the appropriate AC unit size for their space.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — AC tonnage (tons of refrigeration)
• \( BTU \) — Cooling capacity (BTU per hour)

Explanation: One ton of refrigeration equals 12,000 BTU per hour. The formula converts BTU rating to standard tons.

3. Importance of Proper AC Sizing

Details: Correct tonnage calculation ensures energy efficiency, proper cooling, and system longevity. Oversized units short-cycle, while undersized units run constantly.

4. Using the Calculator

Tips: Enter the cooling capacity in BTU/hr (found on AC unit specifications). The result shows the equivalent tonnage.

5. Frequently Asked Questions (FAQ)

Q1: Why 12,000 BTU per ton?
A: This standard comes from the amount of heat needed to melt one ton of ice in 24 hours (288,000 BTU/24h = 12,000 BTU/h).

Q2: What's a typical tonnage for residential AC?
A: Most homes need 1-5 tons (12,000-60,000 BTU), depending on square footage and climate.

Q3: How do I find my AC's BTU rating?
A: Check the manufacturer's label on the outdoor unit or product specifications.

Q4: Does this work for all AC types?
A: Yes, the BTU-to-ton conversion applies to all refrigeration systems, though this calculator focuses on split systems.

Q5: Should I round up the tonnage?
A: HVAC systems come in standard sizes (1, 1.5, 2, 2.5, etc. tons). Round to the nearest standard size after calculation.