1. What is the Tons to BTU/h Conversion?

The conversion between tons and BTU/h is fundamental in HVAC sizing. One ton of cooling capacity equals 12,000 BTU per hour. This calculator helps determine the appropriate ducted air conditioning system size based on your cooling load.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( Tons \) — Cooling capacity in tons (1 ton = 12,000 BTU/h)
• \( BTU/h \) — British Thermal Units per hour (cooling load)

Explanation: This conversion allows HVAC professionals to match equipment capacity to the calculated cooling load of a space.

3. Importance of Proper AC Sizing

Details: Correct AC sizing is crucial for energy efficiency, comfort, and system longevity. Oversized units short-cycle, while undersized units run continuously without properly cooling.

4. Using the Calculator

Tips: Enter your total cooling load in BTU/h. For whole-house calculations, a Manual J load calculation should be performed to determine the exact BTU requirements.

5. Frequently Asked Questions (FAQ)

Q1: How many square feet will 1 ton cool?
A: Roughly 400-600 sq ft in moderate climates, but this varies based on insulation, climate, and other factors.

Q2: What's the difference between BTU and tons?
A: Tons is a unit of cooling capacity (1 ton = 12,000 BTU/h). Tons is typically used for larger systems.

Q3: How do I calculate my home's BTU requirements?
A: Professional Manual J calculations consider square footage, insulation, windows, climate, and more for precise sizing.

Q4: Can I use this for mini-split systems?
A: While the calculation works, ductless systems often have different sizing considerations than central ducted systems.

Q5: What if my calculation gives me 3.6 tons?
A: HVAC systems typically come in whole or half-ton increments (3.5 or 4 tons). A professional can help determine the best size.