1. What is a Commercial AC Tonnage Calculator?

Definition: This calculator converts cooling capacity in BTU/hr to AC tonnage, which is a standard measurement for commercial air conditioning systems.

Purpose: It helps HVAC professionals and facility managers determine the appropriate size of AC units for commercial spaces.

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 converts BTU rating to standard tonnage.

3. Importance of AC Tonnage Calculation

Details: Proper tonnage calculation ensures efficient cooling, energy savings, and prevents system overloading or underperformance.

4. Using the Calculator

Tips: Enter the cooling capacity in BTU/hr (typically found on AC unit specifications). 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: What's a typical tonnage for commercial spaces?
A: Commercial spaces typically require 1 ton per 400-600 sq ft, but this varies based on insulation, climate, and other factors.

Q3: How do I find the BTU rating?
A: Check the AC unit specifications or calculate using: BTU = Area (sq ft) × 25 (for moderate climates) × other factors.

Q4: What's the difference between residential and commercial tonnage?
A: The calculation is the same, but commercial units are typically larger (5-50 tons) compared to residential (1-5 tons).

Q5: Should I round up the tonnage?
A: Generally yes, as it's better to have slightly more capacity than needed, but consult an HVAC professional for exact sizing.