Quiet fans for canopy/hood?

RobynT · 08/29/2008, 10:50 AM

I would like recomendations for installable fans for my hood that are reliable and quiet. I am using some fans that came with my old hood and it sounds like a jet taking off when they are started up. I currently have 6 fans on the top of the canopy (6 ft long)
Help!!

AZDesertRat · 08/29/2008, 01:24 PM

I use one Vantec Stealth 120mm fan in each end of my 5 foot canopy both blowing in with holes drilled in the top directly over the reflectors for heat to escape. This works well even with 2x250MH and 2x140w VHO bulbs. The fans are about $12 each at www.newegg.com and are powered by a variable voltage DC power supply from Harbor Freight Tools so I can vary fan speeds and noise.
53 CFM each at 28 dBa I believe so I am getting right at 10 air changes a minute at 12v DC.

sjm817 · 08/29/2008, 01:53 PM

I just got some new fans and will hopefully get them in and post about them this weekend.

I found out about them by reading Silent PC Review
Fan Roundup #5: Attack of the 120 Scythes
I bought 4 of the SCYTHE SLIP STREAM SY1225SL12M
68.54 CFM - 1,200 RPM - 24 dBA

Quote:

The Medium speed Slip Stream is probably the most sensible choice among the five. It spins reasonably fast at full speed and undervolts well, becoming effectively inaudible at 5V. It also has a very low starting voltage of only 2.4V. What impressed us most was how smooth and consistent the fan sounded, no matter what speed it was running at. At high speeds, a typical sleeve bearing fan drones and whines, and at low speeds it ticks or chatters. We listened very carefully for increasing and decreasing bearing/motor noise as the speed was adjusted, and the difference was minimal.

As for performance, well, it was simply the best. Of all the fans we've tested at approximately 18-19 dBA, none could match the 24 CFM the Slip Stream M pushed, not even our reference Nexus fan. Interestingly, according to various reports, the Scythe Ninja Rev. B now ships with this exact fan model. Some heatsinks do not even come with fans, so for Scythe to include their best fan with the current Ninja gives us all sorts of warm and fuzzy feelin

firebirdude · 08/29/2008, 03:09 PM

Quote:

Originally posted by AZDesertRat
Vantec Stealth 120mm fan

Great fan. I selected it for my PC. I would suggest looking into buying a few of these.

Kernel Panic · 08/29/2008, 05:02 PM

I use a 140mm Yate Loon D14SL-12("46CFMat25dB") for the stand and 2 Noctua NF-S12("35CFMat8dB") for the canopy.
Love 'em.

08/29/2008, 10:50 AM	#1
RobynT Moved On Join Date: Mar 2006 Location: Galva IL (aka Mayberry) Posts: 590	Quiet fans for canopy/hood? I would like recomendations for installable fans for my hood that are reliable and quiet. I am using some fans that came with my old hood and it sounds like a jet taking off when they are started up. I currently have 6 fans on the top of the canopy (6 ft long) Help!!

08/29/2008, 01:24 PM	#2
AZDesertRat Moved On Join Date: Jan 2002 Location: NW Phoenix Posts: 16,621	I use one Vantec Stealth 120mm fan in each end of my 5 foot canopy both blowing in with holes drilled in the top directly over the reflectors for heat to escape. This works well even with 2x250MH and 2x140w VHO bulbs. The fans are about $12 each at www.newegg.com and are powered by a variable voltage DC power supply from Harbor Freight Tools so I can vary fan speeds and noise. 53 CFM each at 28 dBa I believe so I am getting right at 10 air changes a minute at 12v DC.

08/29/2008, 05:02 PM	#5
Kernel Panic Registered Member Join Date: Jan 2006 Location: Canton, GA Posts: 140	I use a 140mm Yate Loon D14SL-12("46CFMat25dB") for the stand and 2 Noctua NF-S12("35CFMat8dB") for the canopy. Love 'em.