1. What is an AC Tonnage Calculator?

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

Purpose: Helps HVAC professionals and homeowners determine the appropriate AC unit size 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/hr. The formula divides the total BTU by 12,000 to convert to 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. The 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/24hr = 12,000 BTU/hr).

Q2: How do I find my cooling capacity needs?
A: Use our BTU Calculator or consult an HVAC professional for a Manual J calculation.

Q3: What's a typical tonnage for residential AC?
A: Most homes need 1-5 tons (12,000-60,000 BTU/hr), depending on square footage and climate.

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

Q5: Does this account for climate or insulation?
A: No, this is a basic conversion. Actual needs depend on many factors including insulation and local climate.