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Shopmade Air Cleaner: Ceiling or Floor?

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Forum topic by FaTToaD posted 02-15-2011 06:52 PM 3784 views 0 times favorited 18 replies Add to Favorites Watch
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FaTToaD

387 posts in 1837 days


02-15-2011 06:52 PM

Topic tags/keywords: air filitration air cleaner dust collection garage shop ceiling

I’m going to make myself an air cleaner for the shop soon, but I’m not sure if I want to mount it on the ceiling, or mount it a mobile base. I’m in a standard finished garage, so I’m afraid it may hang down too low if I place it on the ceiling, but I’m not sure how effective it will be on the floor. I can get a mid-size swamp cooler with a squirrel cage and motor from a friend’s dad, I’m not sure how big it is, but I’m afraid it may be too big for the ceiling in my shop.

Anyone have any luck with these things NOT mounted on the ceiling? I’m still torn between the two options, but I keep thinking if I leave it on the floor I can use it as a tool stand. Any help would be appreciated! Thanks.

David

-- David


18 replies so far

View Eric_S's profile

Eric_S

1521 posts in 1891 days


#1 posted 02-15-2011 06:59 PM

I currently am just using a 20” box fan on the floor with some filters on it as my air cleaner which does an ok job but I’d prefer a more powerful CFM. However, I’d think that the best place would be the ceiling. My reason behind this thought is if its on the floor, all the dust floating around will latch onto any surfaces on the way down to the floor, but wont as much going upward towards the ceiling. It makes sense to me at least.

-- - Eric Indianapolis, IN

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Bertha

12951 posts in 1389 days


#2 posted 02-15-2011 07:10 PM

I built a box fan rig with two filters & suspended it from the ceiling in my old shop. It did a surprisingly good job but I can’t say I ever tried it NOT on the ceiling.

-- My dad and I built a 65 chev pick up.I killed trannys in that thing for some reason-Hog

View StumpyNubs's profile

StumpyNubs

6249 posts in 1496 days


#3 posted 02-15-2011 07:15 PM

There is a reason all of the filters you buy are meant to be cieling mounted. You need to circulate all of the shop’s air through it, which means you need uninterrupted flow. If you put it on the floor the airflow around the shop will be ubstructed by benches and machines. At the cieling the air current flows freely. That’s why it is also best to put it in near one of the walls rather than in the center of the shop. Air is sucked in the back and blows out the front creating a circular flow all around the shop. Putting it on the floor will filter only the air around it.

-- It's the best woodworking show since the invention of wood... New episodes at: http://www.stumpynubs.com

View RetiredCoastie's profile

RetiredCoastie

999 posts in 1879 days


#4 posted 02-15-2011 07:18 PM

Jim has it right, it needs to be ceiling mounted.

-- www.thepatriotwoodworker.com Proud Supporter of Homes For Our Troops

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FaTToaD

387 posts in 1837 days


#5 posted 02-15-2011 07:21 PM

On the ceiling near a wall. Got it. Now I’ve got a find a place to put it. I’ve got a good friend that’s 6’11” that’s in my shop quite a bit and I’d like to keep him from hitting his head on it. Thanks for all the info!

-- David

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RetiredCoastie

999 posts in 1879 days


#6 posted 02-15-2011 07:30 PM

Just hang some red vinyl 1 inch strips from the filter. It will act as a visual Que that there is a head hazard.

-- www.thepatriotwoodworker.com Proud Supporter of Homes For Our Troops

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StumpyNubs

6249 posts in 1496 days


#7 posted 02-15-2011 07:32 PM

How high is your shop cieling? If you have a bench or cabinet or something aginst the wall, put it over that, then nobody will walk under it and hit their head.

BTW- if you are making your own, the very FIRST thing you should do is go find the best pirces on air filters. (Both pre filter and fine hepa filters) then design your system to fit those sizes. It stinks to try and find a filter to fit a system you already built.

-- It's the best woodworking show since the invention of wood... New episodes at: http://www.stumpynubs.com

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FaTToaD

387 posts in 1837 days


#8 posted 02-15-2011 07:50 PM

Jim, my ceiling is a standar 9 ft, so it should be ok hangind down if it’s not more than two feet deep. I think I have a place towards the side of my shop above the washer and dryer that may be perfect. I was thinking it had to be in the center, but if it doesn’t then that makes this a lot easier.

I’m definitly going to buy the filters first. Do I buy all the same filters, or different types? Also, do most people put a filter on the out flow from the fan?

-- David

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Bertha

12951 posts in 1389 days


#9 posted 02-15-2011 07:51 PM

I did exactly what Jim describes. I first bought a stack of the cheapest higher quality filters I could find, then bought a second stack of size-matched “scrubber” filters for the real coarse stuff. I then bought a box fan that would accommodate the filters. I built a simple wooden frame, attached it to the fan with hinges, and made a clasp with a hinge pin for quick removal. I suspended it from the ceiling on four chains & eyebolts; plugged it in with a lamp socket to 110V adapter.

I’ve got to say, it seemed to work as well as my current lower-end JET filter.

-- My dad and I built a 65 chev pick up.I killed trannys in that thing for some reason-Hog

View dbhost's profile

dbhost

5386 posts in 1928 days


#10 posted 02-15-2011 07:52 PM

I have the Grizzly G0572 mounted on 2×4s to the ceiling (I put mine at an angle like Grizzly recommended), My overall height to the bottom of the filter is 6’ 8”, I am 6’ even so I have plenty of clearance. I mounted the filter so that no long stock was ever going to get near it. In all honesty, anything longer than 8’ gets broken down in the driveway anyway, my shop is too small for it…

-- My workshop blog can be found at http://daves-workshop.blogspot.com

View RetiredCoastie's profile

RetiredCoastie

999 posts in 1879 days


#11 posted 02-15-2011 08:51 PM

On the filter I built http://lumberjocks.com/projects/23971 I used standard air filters on the intake and on the discharge side I put in a hepa filter. By putting the hepa filter on the discharge side it doesn’t clog up as fast.

-- www.thepatriotwoodworker.com Proud Supporter of Homes For Our Troops

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FaTToaD

387 posts in 1837 days


#12 posted 02-15-2011 11:51 PM

dbhost, you mounted yours at angle? I’d be interesting in seeing what kind of angle. Got a link?

-- David

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hairy

2070 posts in 2228 days


#13 posted 02-15-2011 11:58 PM

Down in my basement I have a PM 1200 ceiling mounted, and a homemade unit on the floor. They both catch a lot. I don’t have any scientific data to back it up, but dirty filters tells me it’s working.

-- the last of Barret's Privateers...

View NBeener's profile

NBeener

4806 posts in 1870 days


#14 posted 02-16-2011 12:35 AM

My furnace has a filter before the intake.

It uses this kind of filter:

When I pull the filter out to replace it, the old one goes onto my 20” box fan.

That sits on my sanding table.

I also got a great deal on a used JDS 10-16 air filtration unit. That hangs from my 9’ joists, on a short length of chain.

I’m picking up a used “explosion-proof” fan, this afternoon. It’s specs are:

”1/4 hp ~4.2 amps, 1725 rpm
16” square housing, 12” cast aluminum blade
~1200 cfm
Exhaust Fan, Hazardous Location, Propeller Dia 12 In, CFM 0.000-In SP 1263, 0.125-In SP 1125, 0.250-In SP 980, 14.1 Sones 0.000-In SP @ 5 Ft, 115/230 Volts, 60 Hz, 1 Phase, Full Load Amps 3.9/2.0, Motor HP 1/4, Bearing Type Ball, Motor RPM 1725, Motor Type Capacitor Start, Motor Insulation Class B, Height 16 In, Width 16 In, Max Depth 14 13/16 In, Mounting Position Vertical, Number of Blades 6, Frame Material Steel, Propeller Material Fabricated Aluminum”

For the near future, I’ll shove it in my window, to help exhaust fumes and dust.

Middle term, I’ll build a plywood box for it, and stick it on rollers. It will suck through the media filter, above, AND a 3M Filtrete furnace filter.

Long term, I’ll build out a finishing room, off my shop, in the basement. I’ll duct the fan to the outside, AND … use the filters above, plus the 3M Filtrete, to filter the incoming air.

Eventually ;-)

-- -- Neil

View Roger's profile

Roger

14898 posts in 1500 days


#15 posted 02-16-2011 02:42 AM

I’m like Eric, but I mounted a 20” box fan from the ceiling (i’ve got a 9.5ft ceiling), w/ furnace filters on both sides. I’ll take out the filters when I see them getting “filled-up”. It works pretty good for less than 20 bux.

-- Roger from KY. Work/Play/Travel Safe. Kentuk55@bellsouth.net

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