AC Room Size Calculator

Room Size AC Guide

Selecting the right AC size for your room ensures optimal comfort and energy efficiency. Our room size calculator provides instant recommendations based on common room dimensions and types.

Quick Room Size Reference

Here are recommended AC sizes for common room dimensions:

• 10x10 (100 sq ft): 0.75-1 Ton — Small bedroom, study
• 10x12 (120 sq ft): 1 Ton — Standard bedroom
• 12x12 (144 sq ft): 1 Ton — Master bedroom
• 12x15 (180 sq ft): 1.5 Ton — Large bedroom, small office
• 15x15 (225 sq ft): 1.5 Ton — Home office, den
• 15x20 (300 sq ft): 2 Ton — Living room
• 20x20 (400 sq ft): 2-2.5 Ton — Large living room
• 20x25 (500 sq ft): 2.5-3 Ton — Open floor plan

Room Type Adjustments

Different room types have different cooling requirements:

• Bedroom: Base calculation is usually sufficient
• Living Room: Add 10% for more occupants and electronics
• Kitchen: Add 15-20% for cooking heat
• Home Office: Add 10-15% for computer equipment
• Sunroom: Add 20-30% for glass walls

Special Considerations

Adjust your calculation for these factors:

• Top floor: Add 20-25% for roof heat gain
• Large windows: Add 10-15% per large window area
• Poor insulation: Add 15-25% for older buildings
• Hot climate (40°C+): Add 15-20% for extreme conditions