Air Conditioner per Square Foot 1 HP

Room Area Formula:

\[ A_{room} = \frac{1 \times 2545 \times COP}{139} \]

Room Area (ft²):

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1. What is the Air Conditioner per Square Foot Calculator?

Definition: This calculator estimates the room area (in square feet) that can be effectively cooled by a 1 HP air conditioner based on its COP (Coefficient of Performance).

Purpose: It helps HVAC professionals and homeowners determine appropriate air conditioner sizing for different spaces.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ A_{room} = \frac{1 \times 2545 \times COP}{139} \]

Where:

\( A_{room} \) — Room area that can be cooled (square feet)
\( COP \) — Coefficient of Performance (unitless factor)
2545 — Conversion factor (BTU/hr per HP)
139 — Standard cooling requirement (BTU/hr per ft²)

Explanation: The formula converts HP to BTU/hr, applies the efficiency factor (COP), then divides by standard cooling needs per square foot.

3. Importance of Proper AC Sizing

Details: Correct sizing ensures energy efficiency, proper cooling, and prevents short-cycling of the AC unit.

4. Using the Calculator

Tips: Enter the COP value (typically between 2.5-4.0 for modern units). The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is COP in air conditioners?
A: COP (Coefficient of Performance) measures efficiency - the ratio of cooling output to energy input.

Q2: What's a typical COP value?
A: Modern AC units typically have COP values between 2.5 and 4.0.

Q3: Why 2545 in the formula?
A: This converts horsepower to BTU/hr (1 HP = 2545 BTU/hr).

Q4: What does the 139 represent?
A: It's the standard cooling requirement of 139 BTU/hr per square foot.

Q5: How do I find my AC's COP?
A: Check the manufacturer's specifications or energy guide label.