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

Definition: This calculator estimates the cooling capacity needed based on the area to be cooled and the BTU 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 load (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 BTU requirement per square foot to determine the total cooling capacity needed.

3. Importance of Cooling Load Calculation

Details: Proper cooling load estimation ensures efficient AC operation, proper sizing of equipment, and energy savings.

4. Using the Calculator

Tips: Enter the area in square feet and BTU per square foot (default 20 BTU/h·ft² for residential spaces). 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·ft² is common, but this can vary based on climate, insulation, and room type.

Q2: How does room height affect the calculation?
A: Higher ceilings may require additional capacity. Consider multiplying by ceiling height factor if needed.

Q3: When would I use a higher BTU/ft² value?
A: Use higher values (25-30) for sunny rooms, kitchens, or spaces with high heat-generating equipment.

Q4: Does this include heat from occupants or appliances?
A: The BTU/ft² value should account for all heat sources. For precise calculations, use a detailed load calculation.

Q5: How do I convert BTU to tons of cooling?
A: Divide BTU by 12,000 (1 ton = 12,000 BTU/h). Our BTU to Tons calculator can help with this conversion.