Noisy Fans

macca82

macca82

Member
can any1 help!!!!
Im doinin my first grow.. ive brought £1300 worth ov gear..ive kitted out my spare bedroom witch is 4meter x 3.5 meter sq ...ive got 4 600w lights for 15 plants..ive got 10inch filter..10inch ductin with 2 10inch fans..ive just turned the fans on to test and it sounds like ive got a plane takeing off in my house..im new to this so can any 1 give some good advise...thanks alot.
 
macca82

macca82

Member
ill try takein the cages off...been told to make a box with mdf around the fan and fill it with expanding foam..wot do think?
alot of messing around if thers easyer ways..
 
comed

comed

Active Member
build a box around the fans that is lined with acoustic foam/eggcrate foam. isolate the mounts for the fans (don't screw directly to wall). or get a fan speed controller and dial them down a bit.
they also make duct mufflers.
 
CEEJR

CEEJR

Well-Known Member
The noise is from the air rushing through the ducting mostly and some from the fan itself. You could use insulated ducting for the wind noise and a muffler as for the fan you can wrap it with dynamat or similar material.
 
macca82

macca82

Member
thanks for that mate...gona get on it this afternoon..i think im gona make a box round the fans and insulate inside them
 
comed

comed

Active Member
another thing to try is to turn one fan on before the other so it has time to get up to speed. it can sometimes cancel any bad harmonics caused by both fans starting up at the same time and getting a weird pressure harmonic that goes up and down in volume kinda like: (WAAAAA..ooooooo...AAAAA....oooooo is the best way I can describe it)
 
CaptainNoob

CaptainNoob

Active Member
Maybe you can get some potentiometer dials to turn the speed down, or see if one fan is enough. What is the cfm rating of your fans? What size room are you in?
 
xgiovanni03x

xgiovanni03x

Active Member
macca82 said:
can any1 help!!!!
Im doinin my first grow.. ive brought £1300 worth ov gear..ive kitted out my spare bedroom witch is 4meter x 3.5 meter sq ...ive got 4 600w lights for 15 plants..ive got 10inch filter..10inch ductin with 2 10inch fans..ive just turned the fans on to test and it sounds like ive got a plane takeing off in my house..im new to this so can any 1 give some good advise...thanks alot.
Click to expand...
Hi macca before i bought my Inline Fan i was really close to buying a Can 6" inline fan, now they are good and powerful but then i saw a youtube vid of a guyz grow tent and man i couldnt even hear the man it was so loud. so i did sum research and found S&P Inline fan,Sure they might not be as strong but they are really quite and add insulated ducting and it gets even better. Check them out. http://www.hvacquick.com/products/residential/Bathroom-Ventilation/Remote-Fans-for-Bath/SP-TD-Series-Inline-Fans

If i were u i will buy the TD-250 with insulated ducting and maybe a duct booster fan since ur gonna connect it to more lights.
 
CaptainNoob

CaptainNoob

Active Member
These are what I am talking about: http://www.horticulturesource.com/product_info.php?products_id=5044

Also, as I understand it, the inline fans (not the flimsy booster fans) should be at the end of the line (or near it) for exhaust. meaning, you want them sucking through the vent hose, not blowing into it. If you are using 2 fans, they should be on separate ventilation paths. I might be wrong, but this is the wisdom shared with me by my local shop owner.

I have a 6" fan which is pretty beefy by itself. I had to get the switch linked above to make the noise tolerable. I have 2 400watt lights, and 1/4 speed is plenty for me for now.
 
You must log in or register to reply here.
Top