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Blower for shop-built air cleaner

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Forum topic by justinwdemoss posted 03-19-2011 11:49 PM 3741 views 1 time favorited 17 replies Add to Favorites Watch
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justinwdemoss

146 posts in 1583 days


03-19-2011 11:49 PM

Topic tags/keywords: blower air air-cleaner cleaner dust dust filtration filtration shop shop-built

I have been looking at several blogs and projects of other jocks and have decided I’m overdue to throw together a shop built air cleaner. I have seen that most folks use a blower from a furnace and I have a call in to a local guy who will get back to me on Monday. However, I did see one jock that used a small blower similar to an electric leaf blower. He had no posting as to how it worked over the long term. He stated that the blower was rated to move just over 200 cfm of air. I have an older 1 hp Paramount leaf blower that hasn’t sold in the last three garage sales. Does anyone have any thoughts on the pros or cons of using that blower? I am sure that that it will more far less air, but I have a small shop (1 bay in a two-car garage) and I am a only a hobbyist woodworker. My main interest in this idea is that I have this blower and using it will likely save me $20-50.

-- Justin in Loveland, OH


17 replies so far

View lew's profile

lew

10092 posts in 2444 days


#1 posted 03-20-2011 02:51 AM

Justin,
If you have a local Vocational School close by, call them and ask to speak to the HVAC instructor. Bet he would give you a furnace blower/motor in exchange for a bag of cookies for his students.

Lew

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

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justinwdemoss

146 posts in 1583 days


#2 posted 03-20-2011 02:54 AM

Not a bad idea, thanks Lew. I just found an older unit on craigslist. The squirrel cage is belt driven and comes with a 110v 1/3hp motor for $20. I may go that route, but still wonder if the leaf blower idea can work.

-- Justin in Loveland, OH

View Grandpa's profile

Grandpa

3182 posts in 1364 days


#3 posted 03-20-2011 03:00 AM

Pay the $20 and never look back. That will last forever

View hairy's profile

hairy

2066 posts in 2220 days


#4 posted 03-20-2011 03:31 AM

I have one left , if you can’t get one.

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

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TopamaxSurvivor

14869 posts in 2364 days


#5 posted 03-20-2011 03:32 AM

If it moves enough air, it should work.

-- "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

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ChrisBunker

15 posts in 1364 days


#6 posted 03-20-2011 05:17 PM

I would think the leaf blower would be very loud.

View sh2005's profile

sh2005

93 posts in 1925 days


#7 posted 03-20-2011 05:59 PM

I have been thinking about building a cleaner as well. One fan I have been considering is this one from HF . It’s pricey, especially if u compare it with a used one. But, it seems like it moves a lot of air. I am not sure whether this fan can be used, so I thought I bring it up.

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DIYaholic

13768 posts in 1363 days


#8 posted 03-20-2011 06:18 PM

You can get a used furnace blower/squirrel cage for less or even free, that will also have greater CFMs.

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procratination a bad thing?

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Dusty56

11663 posts in 2376 days


#9 posted 03-20-2011 06:53 PM

Go with the furnace set-up…..the leaf blower is all about creating high velocity wind versus moving a large volume of air quietly.

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

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justinwdemoss

146 posts in 1583 days


#10 posted 03-20-2011 11:28 PM

Thanks for all of the input. I the noise was my first concern with the leaf blower. I has a call in with the HVAC guy and hope to get something that way. Is there any trick to wiring a furnace blower up? I understand they can have multiple speeds.

-- Justin in Loveland, OH

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DIYaholic

13768 posts in 1363 days


#11 posted 03-20-2011 11:34 PM

The one I have came with a variable speed switch. I would say, it depends upon the motor that comes with the blower (others should/do know better than I). Your HVAC guy may be able to answer that question. You should also consider wiring in a multi-hour timer. This way you can leave it on after you leave the shop.

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procratination a bad thing?

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justinwdemoss

146 posts in 1583 days


#12 posted 03-21-2011 02:26 AM

Just got back from checking out the blower(s) from the CL post. Both are very dirty, but after a good cleaning should be perfect. They are both belt driven with 1/4 hp motors. The larger blower fan was setup with a newer motor that shut off after about 30 sec of run time. The seller said he wouldn’t sell something that he knew was broken, so he took $20 for the smaller one that ran great, and gave me the larger one with the “bad” motor. I plan to clean them up, replace the belts with link belts. I have a 1/4 hp motor from an old lathe. So now I have the makings for two running furnace blowers.

Anyone ever seen an air cleaner with two blowers? I will likely just use one and sell the other, but hey if you know of someone that used to blowers and thought a lot of it. I have a small shop so, one will likely be enough.

-- Justin in Loveland, OH

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TopamaxSurvivor

14869 posts in 2364 days


#13 posted 03-21-2011 04:05 AM

Most air handling units in commercial buildings have a supply fan and a return fan. Not reason you couldn’t too ;-)) If you really want to clean the air, you could run 2 or 3 filters in series with the 2 fans separated by one or 2 of the filters.

-- "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

View David "Lucky Dawg" Brown's profile

David "Lucky Dawg" Brown

440 posts in 1681 days


#14 posted 03-21-2011 05:09 AM

go to my projects page and look at the air filter in there!
I paid about twenty five bucks and some scraps
Walmart-filter 4 something -box fan 14 something

Poor mans air filter it really works im in a 10’ x 16’ shed!
yes very cramped!!

-- dumpster diver delux

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TopamaxSurvivor

14869 posts in 2364 days


#15 posted 03-21-2011 08:13 AM

Blower motors normally have a lead for each speed. You need to power them one at a time to select a speed.

-- "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

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