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How To Calculate AC Ton By Room Size

AC Ton Calculation Formula:

\[ Ton = \frac{Area \times Factor}{12000} \]

sq ft
BTU/sq ft

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1. What is AC Ton Calculation?

AC ton calculation determines the appropriate air conditioning capacity needed for a room based on its size and heat load factors. Proper sizing ensures efficient cooling and energy consumption.

2. How Does the Calculator Work?

The calculator uses the AC ton formula:

\[ Ton = \frac{Area \times Factor}{12000} \]

Where:

Explanation: The formula calculates the required cooling capacity in tons based on room area and the specific cooling factor needed for the space.

3. Importance of Proper AC Sizing

Details: Correct AC sizing is crucial for energy efficiency, proper humidity control, and maintaining comfortable temperatures. Oversized units short cycle, while undersized units run continuously without achieving desired temperatures.

4. Using the Calculator

Tips: Enter room area in square feet and the appropriate BTU factor (typically 20 for shaded rooms, 25 for average sunlight, 30 for rooms with significant sun exposure). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a good BTU factor to use?
A: Typically 20-30 BTU per square foot. Use higher values for sunnier rooms, kitchens, or spaces with more heat-generating equipment.

Q2: Why is proper AC sizing important?
A: Proper sizing ensures energy efficiency, better humidity control, longer equipment life, and more consistent comfort levels.

Q3: What other factors affect AC sizing?
A: Ceiling height, insulation quality, window size and orientation, number of occupants, and heat-generating appliances all affect cooling requirements.

Q4: Can I use this for entire house calculations?
A: Yes, but you should calculate each room separately as different rooms may have different cooling requirements.

Q5: What if my calculation gives a decimal value?
A: AC units typically come in standard sizes (1, 1.5, 2, 2.5, 3, 3.5, 4, 5 tons). Round up to the nearest standard size for best results.

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