Expert Guide

Babu

Utility Calculators

AC Tonnage & Room Cooling Calculator

Quality Inspector

Kaka

Find required AC size for any room.

📐 Formula & Method

Base Ton = Area / 100. Multiplied by solar heat factors.

Tonnage = (Area / 100) × Factor

📋 Worked Example

150 sq.ft top floor room:
• Base = 1.5 Ton
• Top Floor Adjustment = 1.8 Ton (Suggested 2.0 Ton)

❓ Frequently Asked Questions

Why tonnage matters?

Undersized ACs work harder and consume more power, while oversized ACs cause frequent on/off cycles and poor humidity control.