1. What Is Range Hood Duct Size?

Range hood duct size refers to the diameter of the ventilation duct needed to efficiently remove smoke, grease, and odors from your kitchen. Proper sizing ensures optimal performance of your range hood system.

2. How Does The Calculator Work?

The calculator uses the standard formula:

Where:

• \( CFM \) — Cubic Feet Per Minute (airflow capacity of the range hood)

Explanation: This formula calculates the minimum duct diameter needed to handle the airflow capacity of your range hood without creating excessive back pressure.

3. Importance Of Proper Duct Sizing

Details: Correct duct sizing is crucial for efficient ventilation. Undersized ducts reduce airflow efficiency and increase noise, while oversized ducts may not create enough suction to effectively capture cooking contaminants.

4. Using The Calculator

Tips: Enter the CFM rating of your range hood (found in the product specifications). The calculator will determine the recommended minimum duct size in inches.

5. Frequently Asked Questions (FAQ)

Q1: What if my calculated duct size isn't a standard size?
A: Always round up to the nearest standard duct size (typically 4", 6", 8", or 10" diameters) for best performance.

Q2: Can I use a larger duct than calculated?
A: Yes, larger ducts generally improve airflow efficiency, but avoid extremely oversized ducts which may reduce suction effectiveness.

Q3: Does duct length affect size requirements?
A: Yes, longer duct runs or multiple bends may require larger duct sizes to maintain adequate airflow.

Q4: What about rectangular duct sizes?
A: For rectangular ducts, choose an equivalent cross-sectional area to the calculated round duct size.

Q5: Is this calculation applicable to all range hood types?
A: This formula works for most standard kitchen range hoods, but always consult manufacturer specifications for specific models.