Window Air Conditioner Size Calculator
Find the perfect window air conditioner size (BTU) for your room based on dimensions, insulation, climate, and other factors. Avoid buying an undersized or oversized unit.
Step 1: Room Details
Understanding BTU Requirements
BTU (British Thermal Unit) measures cooling capacity. Choosing the right size ensures efficient cooling, lower energy bills, and longer equipment life. An undersized unit won’t cool properly, while an oversized one cycles too frequently.
Step 2: Additional Factors
About AC Sizing
Proper AC sizing is crucial for comfort and efficiency. As a general rule, you need about 20 BTU per square foot of living space. However, this can vary based on ceiling height, insulation, sunlight exposure, and other factors.
Air Conditioner Size Results
Recommended AC Size
Air Conditioner Size Comparison
| BTU Range | Room Size (sq ft) | AC Type | Typical Usage | Power Consumption |
|---|
Room Cooling Analysis
BTU Calculation Formula
BTU = (Room Area × 20) × Ceiling Height Factor × Insulation Factor × Climate Factor × Room Type Factor + (Occupants × 400) + (Windows × 200)
Base calculation assumes 20 BTU per square foot. Adjustments are made for ceiling height, insulation quality, climate, room type, number of occupants, and windows. Kitchen adjacency adds 10% to the total.
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