Commercial AC Tonnage Calculator

Commercial AC Tonnage Formula:

\[ Tons = \frac{Sq\ Ft}{400-500} \]

Required AC Tonnage:

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Commercial AC Tonnage Calculation?

Commercial AC tonnage calculation determines the cooling capacity required for commercial spaces based on square footage. Proper sizing is crucial for energy efficiency, comfort, and system longevity.

2. How Does the Calculator Work?

The calculator uses the commercial AC tonnage formula:

\[ Tons = \frac{Sq\ Ft}{400-500} \]

Where:

\( Tons \) — Required air conditioning capacity in tons
\( Sq\ Ft \) — Total square footage of the commercial space
\( 400-500 \) — Coverage factor (square feet per ton of cooling)

Explanation: The formula calculates how many tons of cooling capacity are needed based on the size of the commercial space and the selected coverage factor.

3. Importance of Proper AC Sizing

Details: Correct AC sizing ensures optimal energy efficiency, proper humidity control, adequate cooling capacity, and prevents premature system failure. Oversized units short cycle, while undersized units run continuously.

4. Using the Calculator

Tips: Enter total square footage of the commercial space and select appropriate coverage factor based on building type, insulation, and climate conditions.

5. Frequently Asked Questions (FAQ)

Q1: What coverage factor should I use?
A: Use 400 for standard commercial spaces, 450 for well-insulated buildings, and 500 for highly efficient or low-occupancy spaces.

Q2: What is a "ton" in AC terminology?
A: One ton of cooling equals 12,000 BTU per hour, which is the amount of heat needed to melt one ton of ice in 24 hours.

Q3: Are there other factors that affect AC sizing?
A: Yes, ceiling height, window area, insulation quality, occupancy, equipment heat load, and climate zone all impact actual cooling requirements.

Q4: Should I round up or down the calculated tonnage?
A: Always round up to the nearest standard unit size (1.5, 2, 2.5, 3, 3.5, 4, 5 tons, etc.) for commercial applications.

Q5: Is this calculation sufficient for final system design?
A: No, this provides a preliminary estimate. Professional Manual J calculation is recommended for final system design and installation.