1. What is AC Size Calculation?

AC size calculation determines the appropriate air conditioning capacity needed for a room based on its area. Proper sizing ensures efficient cooling, energy savings, and optimal performance.

2. How Does the Calculator Work?

The calculator uses the AC sizing formula:

Where:

• \( T \) — AC size in tons
• \( A \) — Room area in square feet
• 25 — BTU per square foot factor
• 12000 — BTU to tons conversion factor (1 ton = 12000 BTU)

Explanation: The formula calculates the required cooling capacity based on room area, converting BTU requirements to tons for proper AC unit selection.

3. Importance of Proper AC Sizing

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

4. Using the Calculator

Tips: Enter room area in square feet. Measure the length and width of the room and multiply to get the area. Ensure accurate measurements for best results.

5. Frequently Asked Questions (FAQ)

Q1: Why is 25 BTU per square foot used?
A: This is a standard factor for average residential rooms with 8-foot ceilings, normal insulation, and moderate sun exposure.

Q2: When should I adjust the BTU factor?
A: Increase to 30-35 BTU/sq ft for sunny rooms, kitchens, or high-occupancy spaces. Decrease to 20 BTU/sq ft for shaded rooms or better insulation.

Q3: What if my room has unusual features?
A: Consider additional factors for high ceilings, large windows, poor insulation, or special equipment that generates heat.

Q4: How accurate is this calculation?
A: This provides a good estimate for standard rooms. For precise sizing, consult with HVAC professionals who consider all environmental factors.

Q5: What are common AC sizes for residential use?
A: Common sizes range from 1.5 tons (600 sq ft) to 5 tons (2000+ sq ft), with 2-3 tons being typical for average homes.