1. What is AC Size Calculation?

The AC size calculation determines the cooling capacity needed for a space, measured in tons. Proper sizing is crucial for energy efficiency and comfort.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Area \) — Area of the space in square feet
• 25 — BTU per square foot (standard value)
• 12000 — Conversion factor (1 ton = 12,000 BTU/hr)

Explanation: The calculation estimates the cooling capacity needed based on the area of the space.

3. Importance of Proper AC Sizing

Details: Correct AC sizing prevents energy waste, ensures proper dehumidification, and extends equipment life. Oversized units short-cycle while undersized units run constantly.

4. Using the Calculator

Tips: Enter the total area to be cooled in square feet. For multiple rooms, use the combined area.

5. Frequently Asked Questions (FAQ)

Q1: Is 25 BTU/sq ft always accurate?
A: This is a general estimate. Factors like ceiling height, insulation, and climate may require adjustments.

Q2: What if my home has high ceilings?
A: For ceilings over 8 feet, increase the BTU calculation by about 10% per additional foot.

Q3: Should I round up the tonnage?
A: AC units come in standard sizes (1.5, 2, 2.5, etc. tons). Round to the nearest available size.

Q4: What about windows and insulation?
A: Poor insulation or many windows may require 30-35 BTU/sq ft instead of 25.

Q5: Is this calculation for central AC or window units?
A: This calculates total cooling load. For multiple window units, divide the total tons by number of units needed.