BTU per Sq Ft Cooling Calculator

Cooling Load Formula:

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

Cooling Load (BTU/h):

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

Definition: This calculator estimates the cooling load in BTU/h based on the area to be cooled and the BTU requirement per square foot.

Purpose: It helps HVAC professionals and homeowners determine the appropriate cooling capacity needed for a space.

2. How Does the Calculator Work?

The calculator uses the formula:

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

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 cooling requirement per square foot to determine the total cooling load needed.

3. Importance of Cooling Load Calculation

Details: Proper cooling load estimation ensures efficient HVAC system sizing, energy efficiency, and comfortable indoor temperatures.

4. Using the Calculator

Tips: Enter the area in square feet and BTU per square foot 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 per square foot value?
A: Residential spaces typically need 20 BTU/h·ft², but this varies based on climate, insulation, and room type.

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 does ceiling height affect the calculation?
A: For ceilings over 8 feet, multiply the area by (ceiling height ÷ 8) before applying BTU/ft².

Q4: Should I include adjacent rooms?
A: Only include areas that share air flow. Closed-off rooms should be calculated separately.

Q5: Does this account for windows and insulation?
A: The BTU/ft² value should be adjusted based on these factors. Use higher values for many windows or poor insulation.