1. What is a BTU per Square Foot Cooling Calculator?

Definition: This calculator estimates the cooling capacity needed for a space based on its area and BTU requirements per square foot.

Purpose: It helps HVAC professionals and homeowners determine the appropriate cooling capacity for rooms or buildings.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Cooling capacity (BTU/h)
• \( A \) — Area to be cooled (square feet)
• \( \text{BTU/ft}^2 \) — Cooling requirement per square foot (typically 10-20 BTU/h·ft²)

Explanation: The area is multiplied by the cooling requirement per square foot to determine total cooling capacity needed.

3. Importance of Proper Cooling Calculation

Details: Accurate cooling capacity estimation ensures energy efficiency, proper temperature control, and prevents over/under sizing of AC units.

4. Using the Calculator

Tips: Enter the area in square feet and BTU per square foot (default 15 BTU/h·ft²). Values typically range between 10-20 BTU/h·ft².

5. Frequently Asked Questions (FAQ)

Q1: What factors affect BTU per square foot requirements?
A: Room insulation, ceiling height, window area, sunlight exposure, and occupancy all influence cooling needs.

Q2: When would I use higher BTU values (15-20)?
A: For rooms with high heat loads - sunny locations, kitchens, server rooms, or spaces with many occupants.

Q3: When would I use lower BTU values (10-14)?
A: For well-insulated spaces, shaded areas, or rooms with minimal heat-generating equipment.

Q4: How does ceiling height affect this calculation?
A: For ceilings over 8 feet, multiply the result by (ceiling height ÷ 8) to adjust for additional air volume.

Q5: Should I round up the calculated BTU value?
A: Yes, it's recommended to round up to the nearest standard AC unit size (e.g., 5,000 BTU increments).