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HVAC Duct Area Calculation Formula (Excle)

Shahrukh Shaikh
Shahrukh Shaikh
Published September 3, 2023
HVAC Duct Area Calculation Formula (Excle)
Ref: Plant Equipment Specification • ISHRAE / ASHRAE Standards MEP Technical Asset

The size of your home informs the size of your heating and cooling units—but it will also determine how large your duct sizes need to be. To accurately gauge the size of your ductwork, you will need to precisely measure the square footage of not just your house as a whole, but the size of each room, as well.

Since the size of your ductwork can increase or lower this measurement, you’ll have to find the necessary CFM for each room before you can get the right duct size for each space.

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Shahrukh Shaikh

Shahrukh Shaikh

Licensed Engineering Contributor
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Chartered Senior MEP Engineer & Review Board Specialist with extensive design, testing, and commissioning field experience across commercial and industrial infrastructure.

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