1. What is a BTU to AC Tonnage Calculator?

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 equals 12,000 BTU per hour. The formula divides the BTU value by 12,000 to convert to tons.

3. Importance of Proper AC Sizing

Details: Correct tonnage calculation ensures energy efficiency, proper cooling, and prevents system overwork or short cycling.

4. Using the Calculator

Tips: Enter the cooling capacity in BTU/hr. The value must be > 0. Common residential AC units range from 18,000 BTU (1.5 tons) to 60,000 BTU (5 tons).

5. Frequently Asked Questions (FAQ)

Q1: Why 12,000 BTU equals 1 ton?
A: This dates back to when cooling was measured by the amount of ice needed. One ton refers to the cooling effect of one ton of ice melting over 24 hours.

Q2: How do I determine the BTU needed for my space?
A: Use our BTU Calculator or consult an HVAC professional who considers square footage, insulation, windows, and climate.

Q3: What's a typical tonnage for a house?
A: Average homes need 1 ton per 400-600 sq ft, but this varies based on factors like insulation and climate.

Q4: Can I round up the calculated tonnage?
A: Yes, AC units come in standard sizes (1, 1.5, 2, 2.5, 3, 3.5, 4, 5 tons). Round to the nearest standard size.

Q5: What if my calculation is between standard sizes?
A: For hot climates or poor insulation, round up. For mild climates or excellent insulation, round down.