1. What is an A/C Tonnage Sizing Calculator?

Definition: This calculator determines the required air conditioning capacity in tons based on the cooling capacity in BTU/hr.

Purpose: It helps homeowners and HVAC professionals properly size air conditioning units for optimal performance and energy efficiency.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — AC tonnage (tons)
• \( BTU \) — Cooling capacity (BTU per hour)

Explanation: One ton of cooling equals 12,000 BTU per hour. The formula converts BTU requirements to standard AC tonnage units.

3. Importance of Proper AC Sizing

Details: Correct tonnage sizing ensures energy efficiency, proper humidity control, and prevents short-cycling or insufficient cooling.

4. Using the Calculator

Tips: Enter the total cooling capacity in BTU/hr. The calculator will determine the equivalent tonnage needed for your AC unit.

5. Frequently Asked Questions (FAQ)

Q1: How do I determine my BTU requirements?
A: Use our BTU Calculator or consult an HVAC professional who can perform a Manual J load calculation.

Q2: What's the relationship between tons and BTU?
A: 1 ton of cooling = 12,000 BTU/hr. This originates from the heat needed to melt 1 ton of ice in 24 hours.

Q3: What are common residential AC sizes?
A: Typical units range from 1.5 to 5 tons (18,000 to 60,000 BTU/hr) for most homes.

Q4: Should I round up the calculated tonnage?
A: HVAC systems come in standard sizes. Round to the nearest half-ton, but consult a professional for exact sizing.

Q5: Does this account for climate or home insulation?
A: No, this only converts BTU to tons. Your BTU calculation should account for those factors.