1. What is HVAC Tonnage?

Definition: HVAC tonnage measures an air conditioning system's cooling capacity, where 1 ton equals 12,000 BTU per hour.

Purpose: Proper tonnage calculation ensures your HVAC system is correctly sized for your space, balancing efficiency and performance.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

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

Explanation: The cooling capacity in BTU/hr is divided by 12,000 to convert to tons of cooling capacity.

3. Importance of Proper Tonnage

Details: Correct tonnage prevents energy waste, maintains comfort, extends equipment life, and avoids humidity problems.

4. Using the Calculator

Tips: Enter the system's cooling capacity in BTU/hr. The calculator will convert this to tons of cooling capacity.

5. Frequently Asked Questions (FAQ)

Q1: Why 12,000 BTU equals 1 ton?
A: This comes from the amount of heat needed to melt 1 ton of ice in 24 hours (288,000 BTU/24 hr = 12,000 BTU/hr).

Q2: How do I find my system's BTU rating?
A: Check the manufacturer's plate on the outdoor unit or consult your HVAC contractor.

Q3: What's the typical tonnage for a home?
A: Most homes need 1 ton per 400-600 sq ft, but this varies by climate, insulation, and other factors.

Q4: Can I use this for heat pumps?
A: Yes, if you're calculating the cooling capacity. Heating capacity may differ.

Q5: What if my result isn't a whole number?
A: HVAC systems commonly come in half-ton increments (1.5, 2, 2.5, etc.).