1. What is the Mini Split Size Calculation?

The mini split size calculation estimates the required BTU capacity for a mini split air conditioning system based on room area and insulation factor. Proper sizing is crucial for efficiency and performance.

2. How Does the Calculator Work?

The calculator uses the basic sizing formula:

Where:

• \( Area \) — Room area in square meters
• \( Factor \) — BTU per square meter (typically 100-150 for UK homes)

Explanation: The calculation provides a baseline estimate of the required BTU capacity for a mini split system.

3. Importance of Proper Sizing

Details: Correct sizing ensures energy efficiency, proper dehumidification, and system longevity. Oversized units short cycle, while undersized units run constantly.

4. Using the Calculator

Tips: Measure your room area accurately. The factor depends on insulation quality - use 100 for well-insulated rooms, 150 for average, and up to 200 for poorly insulated spaces.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical BTU per square meter for UK homes?
A: Most UK homes use 100-150 BTU per square meter depending on insulation quality.

Q2: Should I round up the calculated size?
A: It's recommended to choose the next available unit size if your calculation falls between standard sizes.

Q3: What other factors affect sizing?
A: Ceiling height, window size/type, room orientation, and heat-generating appliances should also be considered.

Q4: Is this calculator suitable for whole-house systems?
A: This provides a room-by-room estimate. Whole-house systems require professional Manual J calculations.

Q5: What about heating capacity?
A: For heating-dominated climates, you may need to increase capacity by 20-30% for proper winter performance.