Problem with carbon filter / extractor fan

Tried to set my carbon filter extractor fan up in my tent with the ducting going out through a vent, turned the fan on and it started making the tent puff up, had to turn it off before it did any damage, anyone got any idea what I might be doing wrong? cheers guys.

Filters need to be matched to the fan cfm.

Are you pulling or pushing through the filter?

i bought it as a complete kit so i would imagine its matched to each other. its an extractor fan, so pulling

Uh, the only explanation possible is that you have the fan mounted backwards... simple physics... the tent can't puff outwards unless something is exerting pressure inward... unless you have another intake fan you failed to mention and it is outpacing your exhaust, I'd say you've most definitely got your extractor backwards...?

no other fans in there atm, you think ive just screwed the filter onto the wrong end of the fan?

Isn't there an arrow on the fan housing?

nope. not as far as I noticed anyway

so is there air coming out the duct or getting pulled in?

You may want a fan speed adjuster, they are about $15-20. As it sounds like your inline fan is a bit strong for your tent size. You can use it as is, but it's more strain on the inline fan and you're much more likely too screw up the bearings or motor with too much excess back pressure. Plus you can get the fans to run fairly silent.

fslashthroat said:

no other fans in there atm, you think ive just screwed the filter onto the wrong end of the fan?

Click to expand...

Must be... you should be able to tell which way the air is sucking just by putting your hand on the duct end...