Noise Level of Fan's?

[FruityBud]

What number range would be considered a quiet running level for a fan?

 

[umbra]

30 db

 

[FruityBud]

Thanks umbra.

Just wondering here, would the CFM be higher with a low dB fan and if you had a high dB would the CFM be lower?

 

[umbra]

more than likely the higher cfm will be higher db as well, it will vary by manufacturer. most fans in this application are not rated by noise level. although may quote a spec for it, many do not. so its hard to shop by db level. i always wind up doing this type of research on my own and spending way more than I started to.

 

[Runbyhemp]

In my experience, smaller fans are noisier. A larger fan won't need to spin as fast to do the same amount of work.

 

[leafminer]

I run a 48 db fan, and I don't like the amount of noise it makes, so the less the better.

 

[BuddyLuv]

My 8 inch centrifugal fans is louder then both my 6 inch fans put together. 8 inch is a 590 and each 6 inch is 424. so from my experience bigger=louder.

 

[ArtVandolay]

...i always wind up doing this type of research on my own and spending way more than I started to.

Me, too . I have found that duct insulation (fiberglass sleeve covered by some type of aluminum foil) significantly reduces fan noise. The duct insulation comes in 4 or 6 (and larger) inch sizes, 25 feet in length for about $25 at Lowes/h depot.

Someone here told me about it and it helps!

 

[FruityBud]

Thanks Guys, some nice input there.

I guess, ill go with a small dB. Noise would not really be a problem, but at the same time, i would like to play safe.

 

[Weedabix]

What number range would be considered a quiet running level for a fan?

the more stoned you are the louder they seem!

 

[joseaf]

Can someone recommend a 6" fan that is very quiet?

 

[ArtVandolay]

Someone here at MP recommended that I make my selection from these:

hXXp://www.hvacquick.com/spfnconfig.php?fm=td

I'm expecting the 4 inch one Monday

 

[diablo_cannabis]

the noise factor mainly depends on the design of the blades. Most industrial fans' blades are simply pieces of aluminum sheet, bent to force the air outward. These types of fans and most fans are not made for quietness. Also excessive use with any fan will start to deteriorate the motor's bearings and that will start to make noise also.

There are some fans that i have found that are more quiet than others, usually ones with plastic injected blades with low surface area, they are smaller but if you get a few of them it might work out.

maybe consider noise insulating your room.

 

[Thorn]

the more stoned you are the louder they seem!

This is very true...and the more paranoid you get about other people hearing it lol

Can someone recommend a 6" fan that is very quiet?

B&Q do a really quiet 6inch clip on fan, but you probably not in the UK so no good for ya

 

[bombbudpuffa]

Here are a couple. I was just looking at these the other day.

 

[7thG]

look up cooler guys.xom
theygot a lot of fans
i think 15db or less is considered inaudible or silent

 

[peaceful]

I run a tower fan that has a long squirrel cage in it (runs top to bottom). It is virtually silent unless I put it on oscilate. It only has a 1'X1' footprint and is about 4' tall.

Squirrel cage type = quiet in my experience.

 

[Vegs]

Squirrel cage type = quiet in my experience.

I wish I could say the same. My 265 CFM squirrel cage fan is kinda noisy.

 

[scatking]

I lke the centrifugal fans - well balanced and run forever. Both Fantech and Can fan make nice quiet units.

 

[I EAT WEED]

I have heard elicent make some of the quietest inline fans. I'm pretty close to purchasing the 4" model. Either way, I'll be using a speed controller with it.

I'd rather spend 15 bucks on a controller and run the fan slower and quieter...then spend 200 bucks and just be Sh-t out of luck.