1. What is AC Tonnage Calculation?

The AC tonnage calculation estimates the cooling capacity needed for a space based on its square footage. One ton of cooling equals 12,000 BTU per hour, and this simple formula provides a quick estimate for residential applications.

2. How Does the Calculator Work?

The calculator uses the basic formula:

Where:

• \( Area \) — Total square footage of the space to be cooled
• 600 — Standard conversion factor (sq ft per ton)

Explanation: This rule of thumb assumes about 600 square feet per ton of cooling capacity for average residential applications.

3. Importance of Proper AC Sizing

Details: Proper AC sizing is crucial for energy efficiency and comfort. An oversized unit will short-cycle, reducing efficiency and humidity control, while an undersized unit will struggle to cool the space.

4. Using the Calculator

Tips: Enter the total square footage of the space to be cooled. For more accurate results, consider factors like ceiling height, insulation, window area, and climate.

5. Frequently Asked Questions (FAQ)

Q1: Is this formula accurate for all situations?
A: This is a basic estimate. Actual requirements may vary based on insulation, climate, windows, and other factors.

Q2: What if my home is well insulated?
A: Well-insulated homes may require less capacity (perhaps 700-800 sq ft per ton), while poorly insulated spaces may need more (400-500 sq ft per ton).

Q3: Does ceiling height matter?
A: Yes, spaces with high ceilings (over 8 feet) may require additional capacity as there's more volume to cool.

Q4: Should I round up or down?
A: HVAC systems come in standard sizes (1.5, 2, 2.5, 3, 3.5, 4, 5 tons). Round to the nearest standard size, considering other factors.

Q5: When should I consult a professional?
A: For precise calculations, especially for large or complex spaces, consult an HVAC professional who can perform a Manual J calculation.