1. What is BTU Required to Cool 1500 Sq Ft?

Definition: This calculator estimates the cooling capacity needed in BTUs per hour for a space of 1500 square feet.

Purpose: Helps HVAC professionals and homeowners determine the appropriate air conditioning unit size for effective cooling.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Cooling capacity required (BTU/h)
• \( A \) — Area to be cooled (square feet)
• \( \text{BTU/ft}^2 \) — Cooling load per square foot
• \( F \) — Adjustment factor for special conditions

Explanation: The area is multiplied by the base cooling requirement and then adjusted for specific factors like insulation, sunlight, etc.

3. Importance of Proper BTU Calculation

Details: Correct BTU calculation ensures efficient cooling, proper humidity control, and energy savings by avoiding oversized or undersized units.

4. Using the Calculator

Tips: Enter the area (default 1500 ft²), BTU/ft² (default 20), and adjustment factor (default 1.0). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical BTU/ft² value?
A: For residential spaces, 20 BTU/ft² is common, but this varies by climate and building characteristics.

Q2: When should I adjust the factor?
A: Increase for sunny rooms (1.1-1.3), high ceilings (1.1-1.2), or poor insulation (1.1-1.3). Decrease for shaded areas (0.9).

Q3: How does this relate to AC tonnage?
A: 12,000 BTU/h = 1 ton of cooling. Divide the result by 12,000 to get required tonnage.

Q4: What about room height?
A: The calculator assumes standard 8-9 ft ceilings. For higher ceilings, increase the factor.

Q5: Does this account for windows?
A: No, for many/sun-facing windows, increase BTU/ft² to 25-30 or adjust the factor accordingly.