1. What is AC Unit Sizing?

AC unit sizing refers to determining the appropriate cooling capacity needed for a space, measured in tons of refrigeration. One ton of cooling equals 12,000 BTU/h (British Thermal Units per hour).

2. How Does the Calculator Work?

The calculator uses the AC unit sizing formula:

Where:

• \( Ton \) — Tons of refrigeration (cooling capacity)
• \( BTU \) — British Thermal Units per hour (BTU/h)

Explanation: This formula converts BTU/h to tons of refrigeration, which is the standard unit for measuring air conditioning capacity.

3. Importance of Proper AC Sizing

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

4. Using the Calculator

Tips: Enter the BTU/h value to calculate the equivalent tonnage. For accurate sizing, consider factors like room size, insulation, climate, and number of occupants.

5. Frequently Asked Questions (FAQ)

Q1: What is a ton of refrigeration?
A: A ton of refrigeration is a unit of power that describes the heat transfer capacity of cooling equipment. One ton equals 12,000 BTU/h.

Q2: How many square feet does 1 ton cool?
A: Generally, 1 ton cools 400-600 square feet, but this varies based on climate, insulation, ceiling height, and other factors.

Q3: What's the difference between BTU and ton?
A: BTU measures heat energy, while ton measures cooling capacity. 1 ton = 12,000 BTU/h.

Q4: How do I calculate BTU requirements for a room?
A: A basic estimate is 20 BTU per square foot, but professional load calculations consider more factors like windows, insulation, and climate.

Q5: What happens if my AC unit is oversized?
A: An oversized AC will cool too quickly without proper dehumidification, leading to a clammy feeling and increased energy costs from frequent cycling.