BTU Cooling per Square Foot Calculator by Tons of Concrete

Cooling BTU Formula:

\[ Q = A \times \text{BTU/ft}^2 \]

Cooling Capacity (BTU/h):

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1. What is a BTU Cooling per Square Foot 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:

\[ Q = A \times \text{BTU/ft}^2 \]

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 the total cooling capacity needed.

3. Importance of Proper Cooling Calculation

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

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What's a typical BTU/ft² value?
A: For residential spaces, 20 BTU/h·ft² is common, but this can vary based on climate, insulation, and room usage.

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

Q3: How do I measure the area?
A: Multiply the length by width of the space in feet. For irregular spaces, divide into rectangles.

Q4: Does this include heat from appliances or people?
A: The BTU/ft² value should account for these factors. Increase the value if significant heat sources are present.

Q5: How does this relate to AC unit sizing?
A: This gives the total cooling capacity needed. Choose an AC unit with slightly higher capacity (10-20% more).