1. What is an AC Tonnage Calculator from BTU?

Definition: This calculator converts cooling capacity in BTU/hr to air conditioning tonnage.

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

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

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

Explanation: One ton of cooling capacity equals 12,000 BTU per hour. The formula converts BTU to equivalent tons.

3. Importance of AC Tonnage Calculation

Details: Proper AC sizing ensures energy efficiency, adequate cooling, and prevents system overwork or short cycling.

4. Using the Calculator

Tips: Enter the cooling capacity in BTU/hr (found on AC unit specifications or calculated based on room size). Value must be > 0.

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 BTU requirement for a room?
A: Roughly 20 BTU per sq ft, but this varies based on climate, insulation, and other factors.

Q3: How many tons is a 24,000 BTU AC unit?
A: 2 tons (24,000 ÷ 12,000 = 2).

Q4: Should I round up the calculated tonnage?
A: Yes, AC units typically come in half-ton increments (1.5, 2, 2.5 tons, etc.).

Q5: What if my calculation is between standard sizes?
A: Choose the next larger size if your climate is very hot, or the smaller size if you're in a milder climate.