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 your space.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Area \) — Square footage of the space to be cooled
• \( Regional\ Factor \) — BTU per square foot based on climate
• \( 12000 \) — Conversion factor (BTU to tons)

Explanation: The calculation accounts for both the size of your space and the climate conditions in your region.

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: Measure your space accurately and select the region that best matches your climate. For irregular spaces, calculate each area separately and sum the results.

5. Frequently Asked Questions (FAQ)

Q1: What if my home has high ceilings?
A: For ceilings over 8 feet, multiply the area by (ceiling height ÷ 8) before using the calculator.

Q2: Does insulation affect the calculation?
A: Yes, poorly insulated homes may need a higher regional factor. Consult an HVAC professional.

Q3: What about windows and sun exposure?
A: South-facing rooms or spaces with many windows may require additional capacity.

Q4: Is this calculation sufficient for final sizing?
A: This provides an estimate. Manual J calculations by professionals consider more factors.

Q5: How often should I reassess my HVAC needs?
A: Whenever you make significant renovations, add space, or change insulation.