1. What is a Cooling BTU per Sq Ft Calculator?

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

Purpose: It helps HVAC professionals and homeowners determine the appropriate cooling capacity for air conditioning systems.

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 (BTU/h·ft²)

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

3. Importance of Cooling Calculation

Details: Proper cooling capacity estimation ensures efficient operation, proper temperature control, and energy savings.

4. Using the Calculator

Tips: Enter the area in square feet and cooling requirement (default 20 BTU/h·ft²). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical BTU per square foot value?
A: For residential spaces, 20 BTU/h per square foot is common, but this varies based on climate, insulation, and other factors.

Q2: When would I use a different BTU/ft² value?
A: Use higher values (25-30) for sunny rooms, kitchens, or poorly insulated spaces. Use lower values (15-18) for shaded or well-insulated areas.

Q3: Does this include heat from occupants or appliances?
A: The BTU/ft² value should account for all heat sources. For precise calculations, consider a detailed Manual J calculation.

Q4: How do I convert this to tons of cooling?
A: Divide BTU/h by 12,000 (1 ton = 12,000 BTU/h). Our BTU to Tons calculator can help with this conversion.

Q5: What about room height?
A: This calculator assumes standard 8-9 ft ceilings. For higher ceilings, multiply the result by (ceiling height ÷ 8).