1. What is Ductless Mini Split Sizing?

Ductless mini split sizing determines the appropriate cooling and heating capacity needed for a space based on square footage. Proper sizing ensures optimal efficiency, comfort, and system longevity.

2. How Does the Calculator Work?

The calculator uses the standard sizing formula:

Where:

• \( Capacity \) — Required cooling/heating capacity in BTU/h
• \( Sq Ft \) — Total square footage of the space
• \( 25 BTU/ft² \) — Standard multiplier for residential spaces

Explanation: This formula provides a baseline calculation for standard residential applications. Additional factors may require adjustments.

3. Importance of Proper Sizing

Details: Correct sizing is crucial for energy efficiency, proper dehumidification, system longevity, and maintaining consistent comfort levels throughout the space.

4. Using the Calculator

Tips: Enter the total square footage of the space you want to condition. For multiple rooms, calculate the combined square footage. Ensure accurate measurements for best results.

5. Frequently Asked Questions (FAQ)

Q1: Why use 25 BTU per square foot?
A: 25 BTU/ft² is a standard multiplier for residential spaces with average insulation, ceiling height, and typical window exposure.

Q2: When should I adjust the multiplier?
A: Increase to 30-35 BTU/ft² for rooms with high ceilings, poor insulation, large windows, or in very hot climates. Decrease to 20 BTU/ft² for well-insulated spaces.

Q3: What if my space has unusual features?
A: Consider additional factors like number of occupants, heat-generating appliances, sun exposure, and insulation quality for more accurate sizing.

Q4: Can I use this for commercial spaces?
A: This calculator is designed for residential applications. Commercial spaces typically require more complex calculations and professional assessment.

Q5: What's the next step after getting the capacity?
A: Consult with an HVAC professional to select the appropriate mini split unit and ensure proper installation for optimal performance.