best intake out take fans

Renfro

Well-Known Member
Vortex VTX for the win.
Best inline fan ever. Damn things never die. Move a ton of air. Like all centrifugal blowers they will be noisy, oversizing the fan and duct and running it at a slower speed can make them very quiet though. The big advantage to the VTX series (centrifugal) is they cope with static pressure much better than mixed flow fans. So you get more real world CFM when you have any restrictions like ductwork, bends, vents, carbon filters...

Typically HID grows need to move more heat and they need the CFM so the centrifugal is the way to go. Many LED grows will be just fine with the lower real world CFM they get from a mixed flow fan. How much heat do you have to move and how cool is the intake air? If the ambient temps are really cool then you won't need as many CFM and of course if the ambient temperature is warm you won't be able to cool a HID grow. Also, don't forget humidity, especially when the lights are off.
 

PadawanWarrior

Well-Known Member
Best inline fan ever. Damn things never die. Move a ton of air. Like all centrifugal blowers they will be noisy, oversizing the fan and duct and running it at a slower speed can make them very quiet though. The big advantage to the VTX series (centrifugal) is they cope with static pressure much better than mixed flow fans. So you get more real world CFM when you have any restrictions like ductwork, bends, vents, carbon filters...

Typically HID grows need to move more heat and they need the CFM so the centrifugal is the way to go. Many LED grows will be just fine with the lower real world CFM they get from a mixed flow fan. How much heat do you have to move and how cool is the intake air? If the ambient temps are really cool then you won't need as many CFM and of course if the ambient temperature is warm you won't be able to cool a HID grow. Also, don't forget humidity, especially when the lights are off.
That's exactly why I picked it. It had the best static pressure ratings. And I probably saw you recommend them, lol.

I also learned about the dust shrooms from you. Awesome advice as always.

Anyways, I love mine. I noticed they're not as easy to find now. I'm wondering if they're coming out with a new one or something.
 

PadawanWarrior

Well-Known Member
The fan or filter?
The Vortex fans. Even the Growers House site seems to only have the 12" one.


My hydro store has some, and they're all on sale.

Just makes me wonder if they've got a new one coming out.
 

Renfro

Well-Known Member
Man I wish I had bought more of those 10 inchers when that site was selling them for less than the 4 inchers.

I did some looking and I see they have a VTX L model out now, less CFM. 497 down to 235. Never seen those before, maybe slower speed to be less noisy?


 

PadawanWarrior

Well-Known Member
Man I wish I had bought more of those 10 inchers when that site was selling them for less than the 4 inchers.

I did some looking and I see they have a VTX L model out now, less CFM. 497 down to 235. Never seen those before, maybe slower speed to be less noisy?


That sucks, well not really if you know what I mean. WTF. They have to be coming out with a more powerful one I would hope.
 

Renfro

Well-Known Member
That sucks, well not really if you know what I mean. WTF. They have to be coming out with a more powerful one I would hope.
I think they still have the normal VTX series as it's still on the vortex site. I suspect they added the L version to provide a reduced noise/cfm option. Not like folks are going to want to buy a speed controller / variac when venting a basement for radon for example.
 
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