1. What is AC Tonnage Per Square Foot?

AC tonnage per square foot is a measurement used in HVAC (Heating, Ventilation, and Air Conditioning) to determine the appropriate size of an air conditioning unit for a given space. It represents the cooling capacity required per unit area.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Ton \) — Tonnage (tons)
• \( Area \) — Area in square feet (sq ft)
• \( Factor \) — Factor in square feet per ton (sq ft/ton)

Explanation: This calculation helps determine the appropriate AC unit size by dividing the total area by the cooling factor required per ton of cooling capacity.

3. Importance of Tonnage Calculation

Details: Proper AC sizing is crucial for energy efficiency, comfort, and system longevity. Undersized units struggle to cool spaces, while oversized units short-cycle, reducing efficiency and humidity control.

4. Using the Calculator

Tips: Enter the area in square feet and the appropriate factor (typically 400-600 sq ft/ton for residential applications). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical factor value for residential AC?
A: For residential applications, a factor of 400-600 square feet per ton is commonly used, depending on climate and insulation.

Q2: Why is proper AC sizing important?
A: Proper sizing ensures energy efficiency, adequate cooling, proper humidity control, and extends the system's lifespan.

Q3: How does climate affect the factor value?
A: Hotter climates typically require a smaller factor (more cooling capacity per square foot), while milder climates can use a larger factor.

Q4: What other factors affect AC sizing?
A: Insulation quality, window area, ceiling height, sun exposure, and internal heat sources all affect the cooling requirements.

Q5: Should I consult a professional for AC sizing?
A: Yes, professional HVAC contractors use detailed Manual J calculations that consider all factors for accurate sizing.