1. What is an AC Tonnage Calculator for India?

Definition: This calculator converts cooling capacity (BTU/hr) to AC tonnage, specifically adjusted for India's tropical climate conditions.

Purpose: Helps homeowners and HVAC professionals properly size air conditioning units for Indian homes and businesses.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — AC tonnage (tons of cooling)
• \( BTU \) — British Thermal Units per hour (cooling capacity)

Note: 1 ton of cooling = 12,000 BTU/hr. This calculation accounts for India's higher cooling requirements due to heat and humidity.

3. Importance of Proper AC Sizing

Details: Correct tonnage ensures energy efficiency, proper cooling, and system longevity. Oversized units cycle too frequently while undersized units run continuously.

4. Using the Calculator

Tips: Enter the cooling capacity in BTU/hr. For Indian homes, typically:

• 150-250 sq ft: 6,000-8,000 BTU (0.5-0.67 ton)
• 250-400 sq ft: 9,000-12,000 BTU (0.75-1 ton)
• 400-650 sq ft: 18,000 BTU (1.5 ton)

5. Frequently Asked Questions (FAQ)

Q1: Why is this calculator specific to India?
A: India's tropical climate requires adjustments for higher heat and humidity compared to standard calculations.

Q2: How do I find my room's BTU requirement?
A: Use our Room BTU Calculator or multiply sq ft by 25-30 for India (higher for west-facing/sun-exposed rooms).

Q3: What's the difference between nominal and actual tonnage?
A: Nominal is standard (12,000 BTU/ton), actual may vary based on conditions. Indian units often need 10-15% more capacity.

Q4: Should I round up the calculated tonnage?
A: For India's climate, it's recommended to round up to the nearest standard size (0.75, 1, 1.5, 2 tons).

Q5: Does this account for inverter ACs?
A: The calculation is the same, but inverter ACs can adjust capacity so exact sizing is less critical.