1. What is an Air Conditioner Tonnage Calculator?

Definition: This calculator converts air conditioner cooling capacity from BTU/hr to tons of refrigeration.

Purpose: It helps HVAC professionals and homeowners determine the appropriate AC unit size for their needs.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Tonnage of refrigeration (tons)
• \( BTU \) — British Thermal Units per hour (BTU/hr)

Explanation: One ton of refrigeration equals 12,000 BTU/hr, which is the amount of heat needed to melt one ton of ice in 24 hours.

3. Importance of Proper AC Sizing

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

4. Using the Calculator

Tips: Enter the cooling capacity in BTU/hr (found on the AC unit's specification plate). The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How many BTU/hr are in 1 ton?
A: There are exactly 12,000 BTU/hr in 1 ton of refrigeration.

Q2: What size AC do I need for my home?
A: Typically 1 ton per 400-600 sq ft, but consult a professional for Manual J load calculation.

Q3: Why is AC capacity measured in tons?
A: It originates from the amount of heat needed to melt a ton of ice in 24 hours.

Q4: What's the difference between BTU and tonnage?
A: They measure the same thing - cooling capacity - but in different units (12,000 BTU/hr = 1 ton).

Q5: How do I find my AC's BTU rating?
A: Check the model number (often contains BTU info) or the specification plate on the unit.