fan ideas (AC pc fans)

im looking for a better fan solution for my grow box.
im looking for a cheaper alternative to something like this
PROVANTAGE: Belkin F4D177 Cabinet Fan Unit Axial with Cord
anyone have any good ideas

Why does that say its 106$?


Just wire a pc fan... Its easy and can be done for leik 2$

can you point me to a guide on what i need and how to

I can teach you with ease... or do some google or theres tutorials on this forum im sure...

Grab an old AC adapter to something you dont use anymore... Check out your PC fan you will use... It will say the voltage and amps for it... Splice your AC adapter that your going to use so that you have 2 wires stripped.

Now take that PC fan, pretty much all fans I have seen have a red, black, and a yellow cable.. Take the red and black and hook it up to your ac adapter wires.. Bam.. custom cheap homemade fan...

I got some pictures in my grow if you wanna check it out. I can post some closeups or something if you need that too

ok so im going to frys electronics later. should i just look for a ac/dc adaptor for a cellphone or should i just ask someone to direct me to a one that is 12v? im thinking of 120mm size since its the same as all the ducting. any recomendations beyond that?

Most computer fans don't push a lot of air. If you're trying to move air through ducting with a PC Fan you're not going to be moving much air. My suggestion: do it once and do it right (i.e. no PC fan).

You can get yourself some 120mm PC fans that push pretty good air, kinda loud, but the price of that is just amazing to me. I can't imagine anyone ever paying for those.

I bought some 41 cfm fans at 17dB and they don't push sh*t for air. Just my two cents, but I wouldn't waste my time/money on PC fans again.

yeah get a ducting fan from home depot or menards for $36 and also grab the male end electrical plug while you're there.

and then go to radio shack and get a 4" 120VAC and wire the plug you got at menards to it and plug it into the wall. fast and moves alot of air around inside the grow room.

or i see at walmart now they have 4" fans that look like oscilating fans. its the ones they use at each checkout for their cashiers. like $10. but again. not powerful enough for ducting.

smartfood said:

I bought some 41 cfm fans at 17dB and they don't push sh*t for air. Just my two cents, but I wouldn't waste my time/money on PC fans again.

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Probably moves about 41 cubic feet of air per minute huh...

If you are looking for cheap, maybe try these

Newegg.com - MASSCOOL FDC12025S1M 120mm Case Fan - Case Fans

78cfm, 4 dollars.

Yate Loon High Speed 120mm Fan (40dBa, 88CFM)

88cfm, 4 dollars.

Newegg.com - Scythe DFS123812-3000 "ULTRA KAZE" 120 x 38 mm Case Fan - Case Fans

133cmf, 10 dollars.


Get like 2 or 3 of those, or half a dozen, who cares, wire them all up to a single ac adapter and there you have cheap cooiling, which may be good for your application. But the cheap inline fans from HD will probably work pretty well too.

Pros: Moves a blizzard of air, has a 4 pin molex type connector with a plug on the other side so you don't have to give up a connection just to hook it up, and a standard 3 pin for motherboard connection.
Cons: L-O-U-D. One of these is like having a small vacuum running, 2 of them is quite unpleasant db wise.
Other Thoughts: It dropped everything in my case a good 10C with just 1, and -15C with 2 of them. So I have no complaints as to what it does, but if quiet is your goal, or even reasonably quiet - get something else.

whatapothead said:

Pros: Moves a blizzard of air, has a 4 pin molex type connector with a plug on the other side so you don't have to give up a connection just to hook it up, and a standard 3 pin for motherboard connection.
Cons: L-O-U-D. One of these is like having a small vacuum running, 2 of them is quite unpleasant db wise.
Other Thoughts: It dropped everything in my case a good 10C with just 1, and -15C with 2 of them. So I have no complaints as to what it does, but if quiet is your goal, or even reasonably quiet - get something else.

Click to expand...

Sounds like a quality 4 dollar part to me. I used to have a 110cfm 120mm fan on one of my computers years ago, but it was so loud already that it didn't make much more noise then it did already.

should i mount the fan in between the hole on the box and the exhaust hose or at the end of the exhaust tubing