Carbon Filter Sizing Calculator
Size your activated carbon filter based on room volume, plant count, and odor intensity.
Inputs
cu ft
Results
Required Filter CFM
140 CFM
Filter Diameter
4 in
Estimated Filter Life15 months
Replacement Cost$50
How to Use This Calculator
- Calculate your grow room volume (Length × Width × Height in feet) and enter it in the Room Volume field.
- Enter the number of plants — more plants produce more odor, which increases the required CFM rating.
- Select your odor level: 1=Low (herbs), 2=Moderate, 3=High (strong-smelling flowering plants).
- Read the Required Filter CFM and recommended Filter Diameter to select the correct carbon filter size.
- Note the Estimated Filter Life (months) and Replacement Cost to budget for ongoing operating expenses.
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