1. What is HVAC Tonnage Calculation?

HVAC tonnage calculation determines the cooling capacity needed for a space. One ton of refrigeration equals 12,000 BTU/h (British Thermal Units per hour), which represents the amount of heat required to melt one ton of ice in 24 hours.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( Ton \) — Tons of refrigeration (cooling capacity)
• \( BTU \) — British Thermal Units per hour (BTU/h)

Explanation: This conversion allows HVAC professionals to determine the appropriate system size based on the cooling requirements measured in BTU/h.

3. Importance of Proper Tonnage Sizing

Details: Correct tonnage sizing is crucial for energy efficiency, comfort, and system longevity. Oversized units short cycle, reducing efficiency and humidity control, while undersized units struggle to maintain temperature.

4. Using the Calculator

Tips: Enter the total BTU/h requirement. The calculator will convert it to tons of refrigeration. For accurate sizing, a professional Manual J calculation is recommended.

5. Frequently Asked Questions (FAQ)

Q1: What is a "ton" in HVAC terms?
A: One ton of cooling capacity equals 12,000 BTU/h, representing the heat absorption rate of melting one ton of ice in 24 hours.

Q2: How do I determine the BTU requirements for my space?
A: BTU requirements depend on square footage, insulation, windows, climate, and other factors. A professional load calculation is recommended.

Q3: What's the typical tonnage for residential homes?
A: Most homes require 1-5 tons, with approximately 400-600 square feet per ton depending on climate and insulation quality.

Q4: Can I use this calculator for heat pump sizing?
A: Yes, the same tonnage calculation applies to both air conditioning and heat pump systems for cooling capacity.

Q5: Why is proper tonnage sizing important?
A: Proper sizing ensures energy efficiency, optimal comfort, adequate humidity control, and extends equipment lifespan.