1. What is AC Size Calculation?

AC size calculation determines the appropriate cooling capacity (in tons) needed for a room based on its area. Proper sizing ensures efficient cooling and energy use.

2. How Does the Calculator Work?

The calculator uses the standard formula:

Where:

• \( Area \) — Room area in square feet
• 20 — BTU per square foot (standard value)
• 12000 — BTU equivalent of 1 ton of cooling

Explanation: The formula converts the total BTU requirement (area × 20) to tons by dividing by 12000 BTU/ton.

3. Importance of Proper AC Sizing

Details: Correct AC sizing prevents energy waste (oversized units) or insufficient cooling (undersized units). Properly sized units run more efficiently and last longer.

4. Using the Calculator

Tips: Measure your room's length and width to calculate area (length × width). Enter the area in square feet for accurate results.

5. Frequently Asked Questions (FAQ)

Q1: What if my room has high ceilings?
A: For ceilings over 8 feet, multiply the result by 1.25 to account for additional volume.

Q2: Does this work for open floor plans?
A: For open spaces, calculate each zone separately or use the total area and add 10-20% capacity.

Q3: What about rooms with lots of windows?
A: For sun-facing rooms or those with large windows, consider adding 10-15% to the calculated capacity.

Q4: Is 20 BTU/sq ft always accurate?
A: This is a general estimate. Hot climates may need 25-30 BTU/sq ft, while cooler areas may need only 15 BTU/sq ft.

Q5: What other factors affect AC sizing?
A: Insulation quality, number of occupants, heat-generating appliances, and local climate all impact sizing needs.