Folks, a lot of you comment on this video to tell me all of the reasons this unit will not work. I hate to disappoint everyone, but it DOES work. I've been using it for two years and have not had a problem. I did a follow-up video where I made it more efficient (Even Better DIY Air Cleaner and Dust Filter). I know that there are many ways to make a high powered super efficient unit, but I chose to make one that is cheap. Everyone has their own idea of cheap, but I used my definition. So if you're going to tell me it's impossible for this to work, you're wrong. It may not work as efficiently as you would like it to, but it has served me well for two years and it's still going strong.

*Works great with **Fastly.Cool** , exactly as described. Love the fact that it can push, pull, or exchange air with the push of a button. The remote is a nice bonus too!*

I am very familiar with construction, filters and own a Hepa 500. I guarantee you this unit will save you $500. and work just as well. It will absolutely work and I thank you for putting one of the best video guide on how to build a filter. Excellent job guys!

The nice thing I liked from this video was the transparence of the men explaining the cons they had to face as they were experimenting this project. Thank you.

Nice video succinct and to the point, no verbosity, just 5 minutes and there you have it! And including the plans is a much appreciated gesture. You guys are awesome - I'm subscribing! I'm also a musician but a novice at woodworking, hopefully I can make this and save my lungs too. Cheers guys!

Hi, I just wanted to let you know that I’m really enjoying your videos, and appreciate you sharing your knowledge and skills with the rest of us. Take care!

I'm not sure why other window fans have become such pieces of garbage kzfaq.infoUgkxGjG43--gYqIoT4Xkur2PqCrtbKwTv2h6 but this one definitely is nice. It's quiet, it has buttons for different functions that you generally don't have to keep pressing over and over again like some of the others, and the remote is a nice feature. Still, button simplification could go further to single functions for each and every one, but it's decent enough. It's a very quiet fan, the quietest window fan that I have ever had, and that alone is worth the extra money over the cheaper ones.

Keeping this project simple makes for a better outcome. Great job and you can breathe a little easier. From one Franklin to another.👍

Brilliant! Of course, I don't have the tools to do such a project, but that is creative thinking.

Many years ago a friend and I made something similar to this but with just one filter for carving when using power tools. Instead of a box fan we used an attic exhaust fan. Tons of air movement and worked like a champ.

Nice! With the recent wildfire smoke we built a similar one but used a rubber made storage tote for the box, layered merv 5, merv 12 and a hepa layer for filtration at air intake where the tote lid would go, used pipe insulation to make gaskets, used a Milwaukee m18 fan to have adequate air movement in a compact size with option to use 110 or 18 volt, position inside the tote on the bottom against another gasket on the end for air exit and an access panel to change the battery

Thanks for sharing, i've had an issue with air quality in my shop but don't have the funds to get an expensive air filter, this will be a great solution for the time being.

Great setup. Simple clean and quick. 1. Put weather stripping in each slot to stop air blowby around the filters. 2. Put foam insulation in the gaps at your fan corners to stop dust from settling there. 3. Use different grades of filters say MERV 8 then MERV 11 then MERV 13. This will catch a ton more dust. Your MERV 8 filter will need more frequent changing but is also a lot cheaper. The MERV 13 will catch the finest of partials that you don't see but get deep in your lungs.

nice job, after a sped up period a still shot of what was completed tells the story thank you

Thank you for taking the time to share this. Very helpful. I am in the process of giving my classroom shop a little tune-up and as i have tried to keep all my sanders and dusty machines in one area- a dust filter is going to be a must. I will be including my students on this and all other builds where our shop is concerned and hopefully they will take more pride in using our shop when they also have a hand in helping to make it better. Thanks to you we will be designing our own system based on your advice. Thanks again. 👍👍

Your shop filter is well done workmanship. I like the idea because now it can be hung out of the way unlike the ones I'm seeing where all the guy does is put a filter on the fan and let it go. Nice project for the winter. Those filtration systems are just too expensive. This helps to reduce my surplus wood and makes it easier to breathe. I'm now looking for your sequel to watch.

I building a 16 x`12 work shop this summer I'm planning to build one of these air filters for it Thank you for posting the video!

Really appreciate that you made the video. I just constructed one and it works great! My lungs thank you so much!

What a great idea. This will do under my house to keep down mold or orders. As well as in the house as well. Now all you guys need to do is make it solar with a timer. Thank guys. Keep it up.

This was a great video..i especially like the ease of design and construction. I saw a new air filter that does not hang. The thought being if it is pulling air up any particulates are going to travel right up into the woodworkers face. Seems this design allows for placement anywhere in the shop I want by just designing the appropriate mounting brackets. Great job! Thanks for saving me so much money and helping to extend my lifespan!

Absolutely epic video! Many thanks from Wales for your professional workmanship, patient tutorial for beginners like me and great video production.

New subscriber. A delight to learn something from someone with common sense approach. Not that common anymore. Cheers!

This is terrific. Thanks. A lot of us have duct taped filters to box fans and found that they do a pretty good job, and the motors in the fans don't burn out with the extra resistance from the filter. I think your adding a front side filter is a good move. I've noticed that on all of my DIY filter/fan combos that dust does build up on the blades. As there's no dust inside the filter box, this is air somehow moving across the blades from the exit side of the fan. This seems counter intuitive, but the moving fan blades will be the coolest surface so 'stuff' wants to collect on them. Young wood workers should never forget that after all the solvents and glues etc... one of the most dangerous long term risks for woodworkers is the tiniest dust particles settling in their lungs. Multiple sources say that these tiny particles are permanent... I don't know (Do I have formica dust from the 1960s? yikes!). Keep your exposure low, live long and enjoying making stuff.

LOVE IT ! I did something like this myself a few years ago but only used one filter.

This is a great idea. I want to make 2 of these. Thank you for sharing this fan system with me. It will save me alot of money. Keep up the great videos.

Ty, this will be perfect for me. I live in AZ and with dogs my downstairs seems to be covered everyday in a layer of dust. And for my workshop lol.. thank you again

This is super cool. I want to use my garage for auto detailing, so i need a dust collector to keep the dust out of the air and this is perfect.

I love it. I have one I made for remodeling. Difference with mine I use a inline or floor blower fan that I put in the work area. I run a reusable plastic tube that runs to the filter in a window or outside. By properly putting up dust barriers I create a negative air work space keeping the rest of the home clean.

Fine project. Very well explained and illustrated. Yes, I subscribed to learn about your now shop improvement projects. Thanks.

I made two of these HEPA filters for my home one for the home office and one for our bed room. I know for a fact they saved my husbands life. Remember to change your filters! Wasn't really aware the difference they made till I changed the filters. I'll never let them get that bad again.

Nice video. I worked on heavy equipment for years they have two air filters first one catch alot then second catches. That works on $100,000++ equipment Thanks nice video

Hi, from a guy that likes to fix things I really enjoyed your video great project.

When he says, this will save your lungs; he speaks truth. I'm 50 and have worked in attics (alarm guy), underneath homes, and spent many days sawing wood, and working in my dusty lawn while mowing. I have damaged my lungs to the point where I had to add oxygen to my bipap machine, yep, oxygen. So, start taking care of your lungs RIGHT NOW!!!!

Good job you guys. Team work makes the DreamWork

This is just what I need for my shop. Simple and well made.

THank you so much for this video. This looks so much nicer than a box fan with a filter duct taped on it.

Great build. I need one of these for myself!!

Good work! I might have to make one of these for my small shop once I get dust collection hooked up.

Nice easy build which is so practical! Thank you and for your excellent and efficient video!

thank you for that. i've been realizing i need to go save my lungs, and this gives a nice idea for it :)

What a great idea! Thanks for sharing, guys!

Nice video and air filter!👍 Thanks for sharing and the plans! I'm building one now! 😁

Your DIY AIR CLEANER project is verrrry well done! Very meticulous. I made a DIY AIR CLEANER, albeit not as sweet as yours. Mine is a simpler concept: $2 estate sale box fan, leave plastic safety screens and wire/plug in place, encase in plywood, caster wheels on the bottom, hinges and carry handle w simple hook lock on top door, cheap furnace prefilter, and my used HVAC MERV 11 5" thick ( higher the MERV number more it cleans down to micron level for allergy and asthma sufferers). I swap out my furnace HVAC MERV 11-13 filters 3-4 ti es a year, then swap out MERV filter in my DIY air filter at the same time, use an airgun to blow dust out of prefilter, change it once a year.

Great another project I have to make, seriously I enjoyed the video and plan to make one myself, Thanks

Requested plans can't wait to build this. Great video.

A very cool project! Thank you for sharing.

Well done! I need the plans so that I may build this one for my shop.

I have been looking for a DIY to make. This is pretty cool. Found a design that you use 4ea 4” x 20” x 20”. They used duct tape to hold it together with a cardboard bottom. With the filters flow inward. The box fan air flow outward. Apparently it doesn’t bog the fan. Still like this build too.

Damn. That music is hella nice. I need one of these filters for my house with all the dang dust these pets bring.

Very, very good! I plan on using 2 fans and several filters front and back, but had no idea on how to start. I was going to use 3/4 aluminum angle, but the strips are a lot more practical. Thanks friend and keep up the good work! P.S., I also want to add soundproofing to tamp down the roar of the fans. 😀

I have stumbled onto the "DIY Air Purifier" side of youtube. It's lovely.

I really enjoyed watching this video and I want to hang out with the cool kids so I subscribed. Thanks for sharing

That's a great idea! I may need to try something like that in my work space.

Excellent video - I don't have all the awesome tools that you do so mine will be a simple design with just one filter. I will use it close to the pellet stove to move & filter the warm air plus filter the dust during cleanings.

If you make a circular shroud for the fan (with as little clearance as possible for the blades) it will greatly increase the unit's efficiency. Otherwise, pressure differential will cause blow-back and leakage through the gaps around the blades (especially the big, open corners in your example). If you were to add up all the surface area of the spaces around your fan you would probably be shocked at how big of a hole you wind up with where the air is just being recirculated around the fan and not forced through the unit and filters at all. I might also suggest that weather stripping in the filter slots would be a light-weight and easy way to help seal the outer edges of the filters and prevent blow-back and leakage, as air - like water - will follow the path or least resistance and if it can avoid being forced through the filters, it will. Likewise, a thin seal of soft rubber, etc. on the door surface will help prevent leakage, as well. A second suggestion would be to stop the 'vortex effect' (which also decreases efficiency by wasting the inertia of the air leaving the fan) by making an 'egg-crate' grid composed of squares an inch or two square and at least a couple inches deep to 'straighten' the flow and redirect it into the exit filter while it still has the velocity to flow through the material. This could be made out of inexpensive & lightweight material and should be as close to the fan as possible.

I've been using a 20 x 20 high quality HVAC and a 20 dollar box fan for years. At least as good as any room air filter for years.

this i will defiantly will be build because i have a lot a of fine dust collecting every where from my sander even though it dose have dust collection on it . thank you for share this

Very nice filter. I've done this with duck tape and the cardboard box my box fan came in which had about 4in of depth available for filters. I used the cheapest filter I could find in front of a $35 MERV 14 filter. I tested with a dylos air quality meter. I was able to easily get down to 0 big parts and sub hundred small particles with that set up. I didn't do exit and entry filtering though. And I believe I put the filters on the pull side. I'm not sure if it makes much of a difference. It did take it awhile to clean the air though. Plus I had to walk around the room with it because of all the dead air spots in my shop.

This is a great neat project, I hope to do it someday.

New subscriber. Thanks for sharing. I use to have a filter fan that had a little water pump that would constantly run water through the filter to keep them from of particles of dust that would collect on them. But if you made one like that I guess it would have to be made of plastic or stainless steel. Great work my friend. I will check out Richard's Channel - The Sawdust Maker also. Thanks again for sharing

A grommet for the power cord opening would've been perfect. Great job!

That there is some fine ingenuity guys. Thanks a bunch.

I made a similar setup but used door seals that you can pickup from your local Home Depot to make sure it had a nice tight fit with no “leaks”. Setup is beautiful and does the job. I also threw in a few pieces of felt as a bushing in between the fan and wooden box to prevent vibration at higher speeds. Cheers and thanks for the help!

I checked your description to see who the music is from. My first thought was... is this a Pink Floyd song I haven't heard before? Great work on the filter, and on the music as well! You've got a wide range of skills, sir.

What a magnificent project Guys. 👍👍👍👍👍

Thank you for this wonderful video. I am a single mother of two little ones and would love to have one of these in our house. Unfortunately no one to build it for us yet.

Thanks for reminding me I am a kool kid!😊 great design and I subscribed 😉

Planning on building something like this but I'm gonna add a UV light !! Great video by the way

When it comes to woodworking, i can't even make a pot holder, nice work guys

Well, I know it works! Mine isn't so fancy but it works good enough for me to keep my two cat's even with lung issues. I only have one layer and a lot of ugly duct tape. But it works. Been using them for two years now, (yes changing the filters about every six months), I have two. One points into the living room from the back of the house, and one points into the living room from the front of the house. The air is cleaned up within 20 minutes of vacuuming.

Great idea for home made spray booth.

Very cool! I'll be building one soon!

Thank you. I am broke with asthma. This will help tons. Covid is no friend of trigger asthma. Daily I get looks of horror so need to do something asap.

Very nice design. Possibly build to hold a 4 to 6 inch thick hepa filter close to the fan for the fine dust and a 1 inch thick filter for the initial removal of the larger debris.

I’m a newby, but I am going to try this! Thanks!

great project and video. thanks for sharing.

Amazing craftsmanship.

Awesome built and great idea

beautifully over-engineered! ;-) Nice construction.

Got one in my basement. 20 x 20 Walmart fan. 20 x 20 high quality filter and duct tape. Tape the filter to the front of the fan. Works great and doesn’t weigh a ton.

That's great! Thanks for sharing this video I have to make one of these

All I can say is WOW! 2 👍🏻 I guess I should of paid attention in shop class 😂 can I hire y’all to build me one? 😃 and your voice is so soothing lol PROBABLY WHY ITS SUCH A PLEASURE TO WATCH YOUR VIDEOS! Kudos to you SIR’s ....new subscriber here

great background music, commentary and visual. earned a sub

Thank you for sharing your fans.

I think I am going to make myself one of these filters.

I did a real basic one by just duct taping the filter onto the box fan. I use 3 of them around the house. Merv 13 make it into an air scrubber for asthma too. Just gotta make sure you got box fans that are not a fire hazard.

Useful thing for the workshop!

Awsome job guys. 👍

I should have done this already.. sawdust and sanding dust have caused some health issues.. thanks for sharing.

One day, my air will be as pure as this man.

I had to forgo buying wood, and just use a roll of painters tape to attach the filter to the back of my box fan. Works great, seals great!

Only two filters needed one is a pre-filter around a Merv 6 to Merv 8 and the other will be your main filter 5 inch deep pleaded Merv 16. Regular propeller type of fans do not do well with high static pressure(resistance to flow caused by filter) if you can scavenged used or buy new squirrel Cage type blower used in the air conditioning units or furnaces of homes often thrown out by HVAC guys when replacing old ones with new ones. They flow of air very excellent when filter start to get clogged they have the strength to keep pushing the airflow at a high velocity. And in a dusty shop I would at least recommend a 20“ x 30“ filter size and just neck it down to your fan. You are woodworkers you can do this.

Just a little piece of advice in regards to the switch … to make things simple, could’ve just added a smart outlet plug in & turned the fan on/off via a remote. Obviously this is no use for this particular video now lol but just a future reference or to any others reading the comments that are deciding on using the same method(s) 👍🏼👍🏼 great work, though! New subscriber!

Sweet! Great handiwork!

Very nice project.. thanks

Nice, informative video. I like the slide in filter setup you use. A suggestion for higher, easier air filtration "airflow" might be to change out 1 or 2 fewer filters and instead ADD a second fan. In a sort of push-pull arrangement. EXAMPLE: A lower MERV filter > fan > high MERV filter > 2nd fan > low or high MERV filter. [depending on your preference]. Initial lower MERV filter for larger particles like sawdust, pet fur, dander. Then the middle of the box would have a high MERV filter for smaller particulates, like smoke. Finally the last filter could be a low or high MERV filter.

Cant wait to make mine

wow simpel and very nice. good job

I love the idea

Great project!