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inline is making too much noise how do i shut it up? +rep to best answer

spex420

spex420

Well-Known Member
so i recently moved. my grow room(closet) shares a wall on the other side theres another room iv noticed walking past you can hear a faint humming like a fan almost unnoticeable you have to be listening for it.

but i would rather even that not be the case i dont want some nosy pita neighbor with nothing better to do but get in other peoples business, in mine

i have http://www.htgsupply.com/Product-6in-Inline-Duct-Fan.asp

anyone have tips/tricks that i can use to shut this mother effer up i was thinking of putting it in a box cutting two holes for each side and wrapping it in a towel \

other then that im not sure what to do i kno its prolly not that big of a deal but i would rather that its not just one more thing in the back of my mind to worry about
 

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ricky1lung

ricky1lung

Well-Known Member
IMO a box wrapped in some Roxul safe and sound insulation would work well.

It works great for a squirrel cage inline booster fan that I installed for a wood stove up in the floor joists in a basement
 
Indagrow

Indagrow

Well-Known Member
Suspended it with bungee cords or some other stretch material, your vibrations are the cause of the noise being audible
 
shawn705

shawn705

Well-Known Member
Trailingpickles said:
fan speed is a good option, but i'd make a box for it.
Click to expand...
il give u the same idea i came up with because i have the EXACT same proble, well HAD lol i make a hole in the ceiling of my closet for the exhaust and close to the intake of the fan i mounted a little clock radio and just leave the radio playing while the fan is on, i have them on the same timer as well so they coincide.. honestly use this idea n u cant go wrong i promise u that.
 
shawn705

shawn705

Well-Known Member
Indagrow said:
Suspended it with bungee cords or some other stretch material, your vibrations are the cause of the noise being audible
Click to expand...
no it isnt, i have mine suspended and just the sound of the fan running is loud enough to hear in my living room, i only use a 4 inch vortex
 
ricky1lung

ricky1lung

Well-Known Member
shawn705 said:
no it isnt, i have mine suspended and just the sound of the fan running is loud enough to hear in my living room, i only use a 4 inch vortex
Click to expand...
In that case you may have to insulate the ducting also, the noise will/could be coming from there also and not just the fan.
 
spex420

spex420

Well-Known Member
shawn705 said:
il give u the same idea i came up with because i have the EXACT same proble, well HAD lol i make a hole in the ceiling of my closet for the exhaust and close to the intake of the fan i mounted a little clock radio and just leave the radio playing while the fan is on, i have them on the same timer as well so they coincide.. honestly use this idea n u cant go wrong i promise u that.
Click to expand...
good idea +rep but all the radio stations here suck my town is too country, i would end up killing myself before i made it to harvest
 
redeye jedi88

redeye jedi88

Active Member
i have mine suspended with straps i also have acoustic ducting and with my left over bits i wrapped my fan up in it cant hear a thing i sleep in the same room aswell
 
shawn705

shawn705

Well-Known Member
spex420 said:
good idea +rep but all the radio stations here suck my town is too country, i would end up killing myself before i made it to harvest
Click to expand...
hahahahahahahahahahahahahahahahahahahaha!!!!!!!!!! literaly LOL mp3 player/ipod dock, anything with music that u can put on a timer wioth ur fan :) thx for the rep
 
Opm

Opm

Active Member
What you need to do is setup a system that records the fan, inverts the waveform in real time and plays it back through a speaker!

Really, just get some rubber washers and put them between the fan and the wall/board, around the mounting screws/bolts.
 
spex420

spex420

Well-Known Member
i went with the bungee idea actually works great noise is down 10 fold iv walked back and forth 20 times i can smoke easy :)

i really appreciate everyone taking the time to adress my issue take care and stay high :bigjoint:
 
M

missing link

Member
Ditch your lights and switch to LED. Its alot more costly, but they produce waaaay less heat which means less ventilation is needed. LED+fan speed controller so you can run the extractor fan at a minimum setting for smell filtration. I just switched from 400W hps to LED's because of this.
 
DemonTrich

DemonTrich

Well-Known Member
i sent legallyflying a PM about this, as i seen he knew whatr he was talking about in another thread about fan silencing. heres the Pm he sent me.


"In your case the noise is caused because you attached the fans directly to your floor joists. So the fans vibrate the joists which makes your entire floor vibrate. Stand over where your fan is....see. And sound is simply vibration.

So I would try a "stage one" silence approach. Mount the fan to a block of wood and then hang that block of wood from your ceiling joists with some rope or chain. Rope probably better but chain will work as well. Done.

Now the other source of noise is the high velocity air existing the system. It is fairly high frequency so it doesn't travel as far as low frequency but if its noisy than you have to build a muffler. All a muffler does is a. Reduce velocity by increasing the diameter of the pipe and B. absorb some of the high frequency reflections via foam. Just make a muffler like those that you can buy and all that is a section of pipe about 2-3 feet long that has the appropriate sized adapters on both ends. In your case a 6 to 8" adapter. So glue some open cell foam to the side of the 8" duct then tape the adapters on both sides ad then install it where the fan exhausts.

Stage "three" involves more work but will also really quiet things down, even in the basement . This stage involves building an box around your fans with holes cut for the inlet and outlet . Build it out of 3/4" Mdf. Cut the holes slightly larger than the diameter of the inlet and outlet ducts. I would glues and screw all the sides except the top. Then line it with foam and install your fan into it and use some simple rubber grommets between the fan and box to reduce vibration. Now screw the top on and seal the gap between the duct and box with liquid nails. Hang the box from the joists.

If you do that, you will barely hear anything running"

hope this help. please rep him and not me. im just the messenger.
 
EmeraldPawn

EmeraldPawn

Member
Hi, this worked really good for me. Go to Menards and pick up up two 5 gal plastic bucket lids. Then go over to the building section where they keep the bags of concrete mix.
You will see some really heavy duty cardboard tubes of various diameters and length... they are concrete forms for pouring columns or posts. I mounted the inline fan in the middle of the inside of the tube and stuff fiberglass insulation in all the dead space areas. I cut a hole in the center of each bucket lid the size of my vent tubes. The bucket lids will fit tightly inside the cardboard tube at each end. I used sheet metal screws that went through the tube wall and into the rim of the bucket lids. This is one tough unit and it is really quiet, you can hang it up easily and not need any anti vibration mounts. I use this under my cabin so it seals out the weather too.
 
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