1. What is HVAC Load Calculation?

HVAC load calculation determines the heating and cooling capacity needed for a building. In Florida's hot climate, proper AC sizing is crucial for comfort, energy efficiency, and equipment longevity.

2. How Does the Calculator Work?

The calculator uses the simplified Florida HVAC estimation formula:

Where:

• \( BTU/h \) — British Thermal Units per hour (cooling capacity)
• \( Area \) — Total square footage of conditioned space
• 25 — Standard multiplier for Florida's climate (BTU/sq ft)

Explanation: This simplified formula provides a quick estimate suitable for preliminary calculations in Florida's hot, humid climate.

3. Importance of Proper HVAC Sizing

Details: Correct HVAC sizing prevents energy waste, maintains comfort, reduces humidity problems, and extends equipment life. Oversized units short-cycle, while undersized units run constantly.

4. Using the Calculator

Tips: Enter the total square footage of air-conditioned space. For precise calculations, consult a Manual J calculation from an HVAC professional.

5. Frequently Asked Questions (FAQ)

Q1: Why is 25 BTU/sq ft used for Florida?
A: Florida's hot, humid climate requires more cooling capacity per square foot than milder climates.

Q2: Is this calculator accurate for all Florida homes?
A: This provides a general estimate. Actual needs vary based on insulation, windows, orientation, and other factors.

Q3: What's the difference between this and Manual J?
A: Manual J considers more factors (windows, insulation, etc.) for precise sizing, while this is a quick estimate.

Q4: Should I use this for new construction?
A: For new construction, always use a full Manual J calculation for proper system design.

Q5: How does ceiling height affect the calculation?
A: Higher ceilings increase volume and may require adjustments. Standard calculations assume 8-9 foot ceilings.