What Size Cfm Fan Do I Need For A 6x4 Grow Area?

[RizzleGizzle]

looking at fans and charcoal filters because the smell is becoming to overwhelming for my wife.

 

[KneeDeep34]

looking at fans and charcoal filters because the smell is becoming to overwhelming for my wife.

Take a look here https://www.zenhydro.com/fans-blowers-filters/fan-filter-combo-kit.html

 

[Monster762]

Id think anything around 200cfm or more be good. But no pro. That would by the math exchange all the air every 1 minute.

 

[Monster762]

Id think anything around 200cfm or more be good. But no pro. That would by the math exchange all the air every 1 minute.

Assuming 7 ft height.

 

[Dan789]

I’m drawing exhaust from two 4x4 tents through a diy setup, one six inch max fan out through a Phatt filter 10x24. Works flawlessly.

 

[oldskol4evr]

i run 400 cfm wide open both intake and exhaust,both filtered,one pushing one pulling,no ac or heat

 

[hawkman]

there is a formula to determine size of fan "cfm's"

 

[kansabis]

Take your height multiplied by your width by your length and get the cubic feet of your room,you want a fan that will change out that air at least around every minute-400cubic feet room would need a 400cfm fan. Hope that helps.

 

[RizzleGizzle]

Thanks so much!

 

[kansabis]

Also if you are pairing this fan with a carbon filter then its ok for the fan cfm to be a lil bit higher than your rooms cubic feet cuz the filter and any turns in your ducting will decrease the fans efficiency some.

 

[RizzleGizzle]

I found this set up hope it is enough cfm for my room it's about the most affordable I can find

 

[kansabis]

I use the same fan and a 6x20 filter in a 4x4 tent and now in a 2x2 tent no problems,I also use a speed controller.