1. What is HVAC Load Calculation?

HVAC load calculation determines the heating and cooling capacity needed for a space. The ServiceTitan tool uses a simplified method based on area, factor, and adjustments to estimate the required BTU/h (British Thermal Units per hour).

2. How Does the Calculator Work?

The calculator uses the basic HVAC load equation:

Where:

• \( Area \) — Space area in square feet
• \( Factor \) — BTU per square foot (typically 20-40 BTU/sq ft)
• \( Adjustments \) — Additional BTU/h for special conditions

Explanation: The equation provides a basic estimate of HVAC load requirements for residential applications.

3. Importance of Load Calculation

Details: Proper load calculation ensures HVAC systems are correctly sized, improving efficiency, comfort, and system longevity while reducing energy costs.

4. Using the Calculator

Tips: Enter area in square feet, factor (default is 30 BTU/sq ft for moderate climates), and any additional adjustments. All values must be valid (area > 0, factor > 0).

5. Frequently Asked Questions (FAQ)

Q1: What's a typical factor value?
A: 20-30 BTU/sq ft for cooling in moderate climates, 30-40 BTU/sq ft for heating in colder climates.

Q2: What adjustments might be needed?
A: Add BTU/h for large windows, poor insulation, high ceilings, or commercial kitchens.

Q3: Is this a Manual J calculation?
A: No, this is a simplified tool. Manual J considers more factors like insulation, windows, and climate.

Q4: How accurate is this method?
A: It provides a rough estimate suitable for quick calculations but not for final system sizing.

Q5: When should I use a professional load calculation?
A: For new construction, major renovations, or when precise sizing is critical.