1. What is an Aircon Size Calculator?

Definition: This calculator estimates the required air conditioner horsepower (HP) based on room area and the unit's efficiency.

Purpose: It helps homeowners and HVAC professionals determine the appropriate air conditioner size for optimal cooling performance.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( HP \) — Required aircon horsepower
• \( A_{room} \) — Room area in square feet
• \( COP \) — Coefficient of Performance (efficiency factor)

Explanation: The formula converts room area to cooling capacity requirements while accounting for the air conditioner's efficiency.

3. Importance of Proper Aircon Sizing

Details: Correct sizing ensures energy efficiency, proper humidity control, and prevents short cycling or insufficient cooling.

4. Using the Calculator

Tips: Enter the room area in square feet and COP (default 3.5 for standard units). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is COP in air conditioning?
A: COP (Coefficient of Performance) measures efficiency - higher values mean more cooling per energy used (typically 2.5-5.0).

Q2: What's a typical room size per HP?
A: Approximately 400-600 ft² per 1 HP for standard units (COP 3.5), but this varies with insulation and climate.

Q3: When would I change the COP value?
A: Adjust for high-efficiency units (COP 4-5) or older models (COP 2.5-3). Check your unit's specifications.

Q4: Does this account for room height?
A: This assumes standard 8-9 ft ceilings. For higher ceilings, increase the area proportionally.

Q5: What about windows or insulation quality?
A: For many/sunny windows or poor insulation, consider adding 10-20% to the calculated HP.