1. What is HVAC Tonnage?

HVAC tonnage refers to the cooling capacity of an air conditioning system. One ton equals 12,000 BTU per hour. Proper sizing is crucial for efficiency and comfort in residential spaces.

2. How Does the Calculator Work?

The calculator uses the standard sizing formula:

Where:

• \( Area \) — Square footage of the space to be cooled
• \( 25 \) — Standard BTU per square foot for residential cooling
• \( 12000 \) — Conversion factor (BTU to tons)

Explanation: This formula provides a basic estimate of required cooling capacity based on square footage.

3. Importance of Proper Sizing

Details: Correct HVAC sizing ensures energy efficiency, proper humidity control, and system longevity. Oversized units short-cycle, while undersized units run constantly.

4. Using the Calculator

Tips: Enter the total square footage of the space to be cooled. For multi-story homes, calculate each floor separately.

5. Frequently Asked Questions (FAQ)

Q1: Is this calculator accurate for all homes?
A: This provides a basic estimate. Actual requirements may vary based on insulation, climate, windows, and other factors.

Q2: What if my home has high ceilings?
A: For ceilings over 8 feet, add 10-20% to the calculated tonnage to account for additional volume.

Q3: Should I round up or down?
A: HVAC systems come in standard sizes (1.5, 2, 2.5, 3, etc. tons). Round to the nearest standard size.

Q4: What about heating requirements?
A: Heating requirements may differ. Consult an HVAC professional for dual heating/cooling systems.

Q5: When should I consult a professional?
A: Always consult an HVAC professional for final system selection and Manual J calculation.