Will an inline duct fan push enough air?

sunny747

Well-Known Member

• Mar 17, 2015

• #1

Another quick question.

Will a 4 inch inline duct fan push or pull enough air to operate a 4" carbon filter?

My 180 cfm vortex fan is way overkill for this current grow box and it's loud and it uses a lot of electricity.

Will this fan have enough power? My box is 16x16 x 42 inches. This states that it is 50 cfm, but I am thinking it will likely bog down and become a 10 cfm.

http://www.lowes.com/pd_234523-1061...+fan&pl=1&currentURL=?Ntt=duct+fan&facetInfo=

I could also buy a 6" inline fan and downsize to the 4" filter.

 

PhenoX

New Member

• Mar 17, 2015

• #2

I only use my inline fans as boosters, do you have an intake fan attached to a dust filter? If you're creating positive pressure you might be okay. Is there not enough room for a proper fan? You might be best off getting/making a speed regulator for your larger fan.

 

AimAim

Well-Known Member

• Mar 17, 2015

• #3

My experience with a similar product is that it was weak and bad, had 2 that burned out like yours within hours, each, luckily Amazon replaced both. For this

http://www.amazon.com/gp/product/B002JQ14F8/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

No comparison. The cheapie you are looking at will burn up if you try to reduce the fan speed w/a contoller.

 

Greenhouse;save

Well-Known Member

• Mar 17, 2015

• #4

4 inch fans(and I have a few) like already mentioned r very week.......but.......with the space YOUR working with ......Yea it should b ok.....

 

sunny747

Well-Known Member

• Mar 17, 2015

• #5

Yea, I have a 180 cfm Vortex fan with 4" Phresh filter and fan speed controller. This thing is great, but it's bulky and noisy and an eye sore.. With the speed controller on it buzzes. It's not a loud buzz, but it's irritating as heck

I have an air purifier that moves a lot of air, but it's noisy also.. My goal is to make this cab quiet, light proof, and efficient.
I'm trying to keep it around 100 watts total power usage. I think my vortex draws 150 w.

 

sunny747

Well-Known Member

• Mar 17, 2015

• #6

Maybe the old computer fan with a piece of carbon filter? I doubt that works very well to control stink though.

 

Greenhouse;save

Well-Known Member

• Mar 18, 2015

• #7

I built my own carbon filter to run with a (strong) 4inch pc fan......gotta say it done the job......

 

sunny747

Well-Known Member

• Mar 18, 2015

• #8

Greenhouse;save said:

I built my own carbon filter to run with a (strong) 4inch pc fan......gotta say it done the job......

Click to expand...

Yea, I see some pretty good pc/cooling fans on amazon. What's the noise level like?

 

Greenhouse;save

Well-Known Member

• Mar 20, 2015

• #9

Alot quieter than my expelair I have as an INTAKE.......yes I use the pc fan as an outtake in my 6+3 veg room.....more powerful......and that's the truth..