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Shop Air Cleaner

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Project by John posted 01-21-2010 04:52 AM 3783 views 24 times favorited 24 comments Add to Favorites Watch

Hello LJ’s. Just finished a shop air cleaner. I had some work done on my furnace recently and it got me thinking about what does the hvac company do with old furnaces when they remove them. “We just scrap them. Would you like one?” So that how I got this free blower and motor. I had the plywood laying around the shop and I had to buy an electrical box, two 10amp switches, eye bolts, chain and a couple filters. All in all I think I have $40 in this. The blower has four windings for four speeds. Even on low this thing cranks out some air. On high every piece of paper in the shop gets blown around. Fun little project.

-- Brain the size of a planet and they have me parking cars.





24 comments so far

View Dusty56's profile

Dusty56

11657 posts in 2340 days


#1 posted 01-21-2010 05:04 AM

Nice job …watch your head though : )

-- I'm absolutely positive that I couldn't be more uncertain!

View grub32's profile

grub32

209 posts in 1700 days


#2 posted 01-21-2010 05:05 AM

Looks great. I have one very similar to it. I used an attic gable vent…My shop space is very large so dust goes everywhere with it on…It is rated to 1500 cfm. I love it. I am sure you will to. My cheaper than one from JDS!!

nicely done,

Grub

-- Science Teacher by Day, Wood Butcher by Night!!

View Bob A in NJ's profile

Bob A in NJ

1145 posts in 2651 days


#3 posted 01-21-2010 06:07 AM

Great idea, I bet you’ll be cleaning/changing that filter often but that’s the whole idea. Well done.

-- Bob A in NJ

View azwoodman's profile

azwoodman

132 posts in 2033 days


#4 posted 01-21-2010 06:07 AM

Awesome! I have been doing some research on these lately so I can build one for my own shop. Very cool! So is there a specific type of filter that you need to use to make it most effective?

-- Spencer, Gilbert Az (http://www.azwoodshop.com)

View John's profile

John

169 posts in 2445 days


#5 posted 01-21-2010 02:11 PM

Thanks guys.

Dusty,
Ceilings are 8’ and a few inches. The air cleaner is 24” vertically. I have a couple inches to spare when I walk under it. It’s mounted partly over my assembly table. I bet I will still smash into it though.

Bob,
I have no idea how often I will have to change them but I sized it to be the same as my furnace filter. I buy them in 6 packs off Amazon.

Azwoodman,
I just figured its a furnace blower and a good furnace filter should do the job. I will find out when I cut a days worth of MDF. First I need to save up enough to pull the trigger on a sawstop. I sold my contractors saw to a friend and I have been without a table saw for a month now. Getting to know my bandsaw.

-- Brain the size of a planet and they have me parking cars.

View Dusty56's profile

Dusty56

11657 posts in 2340 days


#6 posted 01-21-2010 02:28 PM

Lucky you with 8’ ceilings !! I’m working in my basement with maybe 7 feet of clearance : ( , but at least I have some space for woodworking : ) Have a great day !

-- I'm absolutely positive that I couldn't be more uncertain!

View Gary Fixler's profile

Gary Fixler

1000 posts in 2033 days


#7 posted 01-21-2010 02:50 PM

Simply awesome. Maybe you can diffuse the air on the output, too, to keep it from blowing everything around. How do you keep the filter from falling out the bottom?

-- Gary, Los Angeles, video game animator

View nuzzo's profile

nuzzo

58 posts in 1768 days


#8 posted 01-21-2010 03:21 PM

Hold on to your hat.

View John's profile

John

169 posts in 2445 days


#9 posted 01-21-2010 03:30 PM

Gary. I thought about pointing the exhaust upwards to gain more head room, direct the air away from people and add resistance to the blower. I might try that. I would like to see how many amps this thing is pulling to see if I need to add some resistance. I wonder if a cage blower is similar to a dust collector where unloaded the motor will draw too many amps. I built the box so that the inlet opening was the same size as the filtering area of the furnace filter. The filter has about a one inch paper border around it. To hold the filters in place I made four L shaped brackets that screw into the box. There is just enough friction to allow you to slide the filter in and out and hold the filter in place. When this thing is running you can place the filter on the opening and the suction will hold it there.

-- Brain the size of a planet and they have me parking cars.

View drbyte's profile

drbyte

562 posts in 2714 days


#10 posted 01-21-2010 03:45 PM

Is there space above the ceiling? Maybe you could mount it recessed up in the ceiling with the filter flat to the ceiling and an outlet a few feet away to help protect your noggin’. Great build.

-- Dennis, WV

View John's profile

John

169 posts in 2445 days


#11 posted 01-21-2010 03:48 PM

drbyte. I’d rather not cut that large of a hole in the ceiling but I might point the outlet at the ceiling and see what that does. I need to see how many amps it pulls in present position before I move it.

-- Brain the size of a planet and they have me parking cars.

View stefang's profile

stefang

13019 posts in 1986 days


#12 posted 01-21-2010 03:58 PM

Nice job. I wish I had something like that. With all that power it makes me think of Tim the toolman Taylor.

-- Mike, an American living in Norway.

View John's profile

John

169 posts in 2445 days


#13 posted 01-21-2010 04:03 PM

stefang. I was really surprised the hvac place just gave this to me. It’s worth a shot. Most they can say is no are it will cost $$. This was one of the cheapest projects I’ve built.

-- Brain the size of a planet and they have me parking cars.

View jockmike2's profile

jockmike2

10635 posts in 2898 days


#14 posted 01-21-2010 04:06 PM

I made two of these for my shop, they work great. Not only clean the air but move the warm air down from the ceiling and move it around.

-- (You just have to please the man in the Mirror) Mike from Michigan -

View John's profile

John

169 posts in 2445 days


#15 posted 01-21-2010 04:08 PM

Right now its moving the cold air around the shop! I need to replace the gasket around the garage door or make it tighter somehow.

-- Brain the size of a planet and they have me parking cars.

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