Ductless AC Size Calculator

Ductless AC Size Formula:

\[ Ton = \frac{(Square Feet \times BTU per sq ft)}{12000} \]

Ton (refrigeration tons):

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1. What is the Ductless AC Size Calculator?

The Ductless AC Size Calculator estimates the required cooling capacity in refrigeration tons for a ductless air conditioning system based on the area's square footage and BTU requirements per square foot.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Ton = \frac{(Square Feet \times BTU per sq ft)}{12000} \]

Where:

\( Square Feet \) — Area to be cooled in square feet
\( BTU per sq ft \) — British Thermal Units required per square foot
\( 12000 \) — Conversion factor (1 ton of cooling = 12000 BTU/hour)

Explanation: This formula calculates the appropriate AC size in tons by multiplying the area by the BTU requirement per square foot, then converting to tons.

3. Importance of Proper AC Sizing

Details: Proper AC sizing is crucial for energy efficiency, optimal performance, and comfort. An undersized unit will struggle to cool the space, while an oversized unit will cycle too frequently, reducing efficiency and lifespan.

4. Using the Calculator

Tips: Enter the square footage of the area to be cooled and the BTU requirement per square foot (typically 20-30 BTU/sq ft for standard conditions). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What factors affect BTU requirements per square foot?
A: Climate, insulation quality, number of windows, ceiling height, and room orientation can all affect BTU requirements.

Q2: What is a typical BTU per square foot value?
A: For moderate climates, 20-25 BTU/sq ft is common. For hotter climates or poorly insulated spaces, 30-35 BTU/sq ft may be needed.

Q3: Why convert to tons instead of using BTU directly?
A: Air conditioning units are typically rated in tons, making it easier to select the appropriate equipment size.

Q4: What if my space has unusual characteristics?
A: For spaces with high ceilings, large windows, or significant heat-generating equipment, consult with an HVAC professional for accurate sizing.

Q5: Can this calculator be used for central AC systems?
A: While the basic principle is similar, central AC systems have additional factors to consider and should be sized by professionals.