1. What is HVAC Load Calculation?

The HVAC load calculation determines the heating and cooling capacity needed for a space. Florida Tech's simplified method provides a quick estimate using area as the primary factor.

2. How Does the Calculator Work?

The calculator uses the Florida Tech formula:

Where:

• \( BTU/h \) — British Thermal Units per hour (cooling capacity)
• \( Area \) — Square footage of the space
• 25 — Standard multiplier for Florida climate

Explanation: This simplified formula accounts for typical cooling needs in Florida's warm climate, estimating 25 BTU per square foot.

3. Importance of Proper HVAC Sizing

Details: Correct HVAC sizing ensures energy efficiency, proper humidity control, and system longevity. Oversized units short-cycle while undersized units struggle to maintain temperature.

4. Using the Calculator

Tips: Enter the total square footage of the conditioned space. For multi-zone calculations, calculate each area separately.

5. Frequently Asked Questions (FAQ)

Q1: Is this formula accurate for all Florida buildings?
A: This provides a basic estimate. For precise calculations, consider factors like insulation, windows, occupancy, and equipment.

Q2: Why 25 BTU per square foot?
A: This accounts for Florida's high heat and humidity. Other regions might use 20 BTU/sq ft or less.

Q3: When should I use a more detailed calculation?
A: For new construction, major renovations, or buildings with unusual characteristics, use Manual J calculations.

Q4: Does this work for heat pump sizing?
A: Yes, this estimates both cooling and heating needs for Florida's mild winters.

Q5: How does ceiling height affect the calculation?
A: Standard calculations assume 8-foot ceilings. Higher ceilings may require adjustments.