Aircon HP vs Room Size

Aircon Horsepower Formula:

\[ HP = \frac{A_{room} \times 139}{2545 \times COP} \]

Required Aircon Horsepower (HP):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Aircon HP vs Room Size Calculator?

Definition: This calculator estimates the required air conditioner horsepower based on room size and the unit's efficiency.

Purpose: It helps homeowners and HVAC professionals determine the appropriate air conditioner size for a given space.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ HP = \frac{A_{room} \times 139}{2545 \times COP} \]

Where:

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

Explanation: The formula converts room area to BTU requirements, then calculates the necessary compressor horsepower based on the unit's efficiency.

3. Importance of Proper Aircon Sizing

Details: Correct air conditioner sizing ensures energy efficiency, proper cooling, and prevents short-cycling or excessive wear.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What is COP?
A: Coefficient of Performance measures air conditioner efficiency. Standard units range from 3.0-3.8, while high-efficiency units can reach 4.0+.

Q2: What's a typical room size for 1HP?
A: Approximately 150-250 sq ft with standard COP, but this varies based on insulation and climate.

Q3: When would I adjust the COP value?
A: Check your unit's specifications. Higher COP means more efficient, requiring less HP for the same area.

Q4: Does this account for room height?
A: No, this assumes standard 8-9 ft ceilings. For higher ceilings, increase the room area proportionally.

Q5: What about windows and insulation?
A: This provides a baseline. Add 10-20% for sunny rooms or poor insulation, subtract for well-insulated spaces.