This is where your cardboard comes in. As you can see, you place the other 20-inch sides of the two filters to either the side or the back of the fan and tape them in place. Assuming the shop air mixes perfectly, for a time constant of 10 minutes, the unit has to filter a volume equivalent to the workshop every 10 minutes. https://www.homedepot.com/p/AC-Safe-20-in-Box-Fan-Filter-FF-20/307280271 With a two-filter or four-filter setup, the filters may last a bit longer, but you should still keep an eye on them. A single strip of duct tape around the edges should be fine, but you don’t want any gaps or cracks to impact efficiency. He built a frame around the blower from plywood and 2 x 4s, and attached a switch to control the fan. All rights reserved. See more ideas about box fan, wood shop, diy box. Thanks! Three stage, double box fan air filter On of the things I wanted to do was provide a way to filter the air in the microshop. I use 20X20 box fans. It is vital that all air being blown out of the discharge of your air cleaner passes through the filters first. Make sure it’s around 20 inches high, a common standard for box fans. Extra features like activated carbon are nice, but not necessary. However, the most effective DIY home air purifier uses two filters at once for better airflow, and it’s not that complicated to set up. These filters sell for about $15 at your local hardware store. This step is unnecessary if you’re going with the one-filter design, as you can simply attach one 20-by-20-inch filter to the back of a 20-inch box fan. Did you make this project? As per the cut list in my FREE PLANS, I cut plywood strips 1" wide and use them to create a frame to house the filters. An easy and inexpensive way to make your own air cleaner is to attach a very high-efficiency furnace filter to a basic box fan. The fan/filter captured the spray paint \'drift\' perfectly (although I still had to wear a respirator and thoroughly air out the apartments). I used a hand held circular saw to cross cut the pieces to rough size, then finished them off on the table saw. After coughing up a lung I decided to hurry up and make a DIY Shop Air Cleaner before my lungs get caked with sawdust. Once the filters get caked with sawdust, they restrict the air flow quite a bit. Insert the air register into the 8"x8" opening and use the 2 screws that are provided with the register. Use this triangle to create a mirrored cardboard piece for the other side as well. #5 Admire your new DIY air purifier Total cost for this DIY air filter: 166 RMB (US$27). Insofar as filter changing costs, you will find that it is still much cheaper to buy furnace filters and variants of them without sacrificing on quality or air cleaning capacity. If you like this project PLEASE consider following my Instructable profile. While there are impressive air purifiers you can buy with plenty of smart tech, they can be expensive, and you may not want to drop several hundred dollars on a new appliance. Compare that to 8,000 RMB ($1,300) for the fancy purifiers here in Beijing. I am extremely creative and I am alway…, How to Make Charcuterie Boards Using Clear Acrylic Templates. Securely fasten a MERV 13 filter to the air intake side of the fan. As we mentioned above, some people just tape the filter right to the back of the box fan and call it a day. Share it with us! But a quick solution, as posted by the University of Michigan’s Medical Center, is to create your own filter using a box fan and a standard HEPA filter, both readily available in most hardware stores and costing about $25 for everything. Matthias has some gadget for measuring airborne particulates, and I don't, so your numbers are very helpful. Set your purifier on the side of the cardboard, and cut or trace around it to create a cardboard triangle that can comfortably fit the air purifier’s gap. Please view all of the detailed photos, download the FREE PLANS, and watch the VIDEO for reference. Air filters like these will have arrows on the sides that show which way air is supposed to flow through the filter. Not much left to do except popping in the two filters and installing the air cleaner somewhere in your shop. If you have any questions at all please leave a comment. My favorite people in the world are my wife Bouavon, and my two beautiful sons Blaise and Dhylon. Purchase a standard 20″ Box Fan. Matthias Wandel built something similar (larger) a while back, but his shop is much larger than mine so I'm not sure yet how much power I'll need. If you order a fan or filters online, the box they come in should work just fine! The other he gave to me to use later. Nest Hello vs. Ring Video Doorbell Pro: Which is better for you? We suggest you get at least a four-pack for this project. PollenTec Box Fan MERV 10 Nano Air Filters Pollen, Dust, Mold Spores and Pet Dander – Biodegradable, Electrostatic Design 6 Pack - Compatible with Holmes HBF2010A-WM Box Fans 20.5" Frame 3.4 out of 5 … I don't think that it actually does provide 420 cfm (more like 300 cfm) and 2. A reliable box fan: If you don’t already have a box fan, you can find affordable options for around $20 to $40, like this Comfort Zone model. Now you are almost done. Now that you have all of your pieces cut, it is time to cut out the the circle for the blower fan, cut out the bottom section, and cut out the square for front air register. Your total cost for a DIY box fan filter can be as low as $40 – 50.00 (including incidentals like duct tape), or higher depending on the filter options. Thank you so much if you made it this far. You can use any tool you have available that can cut through wood but I used my trusty Black and Decker Matrix with the jig saw attachment. DIY-ers will sometimes construct their own HEPA filters by simply attaching an air filter to the front of a box fan, but Dr. Corsi says that might not be as effective as it seems. This will probably perform even better than the filters used during testing) To make one, start by buying a MERV 13 or FPR 10 furnace filter and tape it to the back of a box fan. I painted a short length at a time keeping the fan close. Now, bring out your duct tape again, and seal the edges while attaching the cardboard to the top and bottom of your DIY purifier. Railroad Rail Lantern / Sign Stand Split With Axe. If you want to do it this way, just make sure the filter arrows are facing toward the back of the fan. I have one in the window and every couple months, I have to pull it down and clean the fan and the screen that is on the window. The addition of a charcoal filter can also help to reduce odors, like those that come from wildfire smoke. Examine the filter’s Minimum Efficiency Reporting Value (MERV) rating, which is a number up to 20 that indicates the size of particles the filter is rated to capture. Once I found sawdust is a carcinogen (yes, really) I always wear a mask while working, but filtration still makes a lot of sense. That’s “pull-through” instead of “blow-through,” the way residential AC works. I mounted mine pretty centrally and near my biggest sawdust maker (my miter saw) and I run it continuously while working. If you’re going to buy the HEPA filter linked above, you’ll need to shop around for a smaller box fan. Hey there, thanks for reading my Instructable and for your comment! If you would like a FREE copy of the SketchUp drawings for this project you can download them from my website by clicking HERE. The easiest way to make a low cost air cleaner is to just use a cheap box fan with a furnace air filter attached in some way to the inlet side. The project itself is a homemade shop air filter. Now it is time to assemble the wooden box. I like this method because it allows me to break down the pieces to a more manageable size before ripping them to final dimensions on the table saw. How long does this take to clean your shop air after a sawing session? Glue-ups, finishing, welding, general repairs, etcetera, etcetera, they all occur in the same space. Once I have all the frames attached, I then attach the bottom of the box. 20x20 Fan With Air Filter. Apply gasketing to the edges of the air intake part of the fan. If they start looking dirty, it’s probably time to quickly disassemble and replace them with new versions to keep the purifier working optimally. Make this DIY air filter to (possibly) reduce your indoor exposure to coronavirus ... president of Hive76, and Inquirer writer Tom Avril demonstrate how to build an air filtering system out of a box fan and some furnace filters on Oct. 14, 2020. Want to breathe cleaner air in your home? I leave it on sometimes over night and I come back in to my shop the next day to a fresh clean air shop. If you would prefer to use this larger setup, then start by taking two of the filters you bought and unpackaging them. Now the fan will have to draw air through the filters as it runs. I hope to keep at least two 1” filters in it most times. Now, use your duct tape to tape a 20-inch side of the two filters together to form an angle. I’m not talking about venting – that’s still something else I will do – but rather gett… Supplies. Shawn was able to score a couple old furnace blower motors for free and the smaller of the two was to be the fan for his shop filter. Remember to choose the right size. DIY Air Filter One easy and affordable way to make your own air cleaner at home is with a box fan and a furnace filter. Any type of sealant will work for this but you must not skip this step. Now, you are ready to set up your air purifier in a central location in your home. Digital Trends may earn a commission when you buy through links on our site. Mine cost $20 at a local home improvement store. A pack of home HVAC filters, also 20 inches: You can find these at any department store or order them online. I made the spot for the 5” filter so that one day I can put a 20”x20”x5” MERV 16 filter … Using the free plans that you downloaded from my website ( Click HERE if you haven't ), cut out the 3/4″ plywood according to the cut list. About: I am a Building Automation Engineer at a major University in California. It is essentially just a wooden box with a blower motor sucking dirty air through a set of filters and blowing out fresh clean air. These “filter fans” can filter out the small particles that … A model with a timer is nice, but not required (or you could just plug it into a smart plug). Copyright ©2021 Designtechnica Corporation. It is essentially just a wooden box with a blower motor sucking dirty air through a set of filters and blowing out fresh clean air. A filter with at least a MERV 13 rating is ideal, as it is rated to capture some smaller particles (like some bacteria and viruses). This is what I came up with. A typical HVAC filter is designed to be replaced every several months or so. I think our spaces are similar, ,though I'm just in a one-car garage. However, with the triangle purifier setup, you have to cover up those additional gaps, so the fan is actually sucking air through the filters themselves. With my workshop about 400 square feet (or about 35 square meters), and about 6.5 feet (2 meters) high, I have a volume of 2600 cubic feet. Duct tape: It’s pretty easy to find duct tape online or in the store. That’s fine — air will enter through the filter on the back of the fan and then exit through the front of the fan. I hung mine on the ceiling right above my miter saw because that is where the most sawdust is generated in my shop. ... Best compact DIY Box Fan Filtration System ... (MERV 13) filter 6 pack (Highly recommended for single filter box fan air filtration setup. I think that with my setup and with clogged filters it recirculates more like 200 cfm. After building my new shop I soon realized that it was really hard to breathe with all the dust I was making. I measure and mark the locations of the filter frames and attach the strips with wood glue and brad nails. Give this inexpensive DIY air filter a try. That’s why, if you don’t mind a couple of extra steps, we advise the two-filter setup. I have had mine running for a few weeks now and I have to say that having an Air Cleaner makes a huge difference in the air quality in my shop. The filters that I used for this air cleaner measure 16"x20"x1" so I designed my air cleaner to accommodate this size filter. The blower motor that I used states that it provides 420 cfm of air flow so in a perfect world at that rate it should be able to clean all the air in my shop in less than 5 minutes. I had a few extra furnace filters lying around, so I tried attaching one to the back of the fan using hook-and-loop fasteners. I notice that after about 10 to15 minutes the air is dust free. Several years ago I built a basic air filter using an old recycled furnace fan, which I wrote about in this post.The original air cleaner was ugly, awkward to install via hanging chains, had a switch location which made it hard for my vertically-challenged wife to turn on, and was unsafe due to the exposed blower fan squirrel cage. I am very glad that I took the few hours it took me to build this project. Place your two filters together, with the arrows pointing at each other. All you need is a box fan and some traditional, replaceable HVAC filters. Ideally, find a fan that is the same … Reference the plans and the video above for details on how I do this and hopefully it helps you figure out how to assemble yours. What was the cost of all components in a rough estimation? All you need to do is attach the filter to the back of the fan with the arrows pointing toward the back of the fan. These can be hard to find quickly with the conditions, however. I have built a few, as simple as a 20x20 filter attached to a box fan, works pretty well in a smal area, for dad's body shop we build a 6 ft square box 12" thick, it is on casters. Hope this helps! Design 1: Use one filter for a … 3 years ago. Matthais mounted his air cleaner(s) in the corner of his shop which I think is a lot less effective. This is what I came up with. I’m not sure when I’ll get around to making one for my shop but now I know I have a motor for it. At this point you should also install your blower fan and make sure that you seal that as well. Photo 2: Filter box with removable side sitting next to it Photo 3: Filter box with a filter and fan inside Photo 4: Different view of filter box with filter and fan inside. The construction of the box is very simple, I used glue and brad nails to attach the pieces together. Attach the front piece with the 8"x8" square cut out of the center to the box using some more wood glue and brad nails. This piece has a large square cut out that holds the filters in place but also allows full airflow through the filters. Reply Not only would it clean the air, but it would also help to keep the shop itself cleaner, by catching the dust before it settles. Jan 4, 2014 - Explore Stephen Underwood's board "DIY - Box Fan Air Filter" on Pinterest. After coughing up a lung I decided to hurry up and make a DIY Shop Air Cleaner before my lungs get caked with sawdust. Wide painters tape or duct tape; 20”x 20” Box Fan (with controls on the top, front or side) (Note: Some have wondered whether we should tape it onto the back of the box fan filter. With all that said, my shop is 12' x 16' x about 8' tall (almost 1600 cubic ft) /200 cfm it should take more like 10 minutes to clean the air. Room air gets sucked into the filter first, and the fan blows clean air out. The Tom Builds Stuff blog has a great example that shows just how this works. The 'hack' is easy: Experts recommend buying what’s called a MERV 13 or FPR 10 furnace filter and tape it to the back of a box fan. It doesn’t take that much more work, and with greater airflow through two filters, the DIY purifier is much more effective. Now that most of the box is assembled it is very important to make sure that the intake portion of the box is air tight. If you have gaps or leaks in your box air and dust will get sucked in and re-circulate back into your space. Over time, these filters will get quite dirty and clogged with dust. : History: First off, a little history of how this project got started. The 9 things Amazon Echo can do that Google Home can’t, These are the best deals on Ring Video Doorbells for January 2021, These are the best cheap blender deals for January 2021. With allergens, disease, odors, and dust building up over the winter months, there are many great reasons to consider getting an air purifier for your home to improve indoor air quality. This would be a good projec… Build a box, cut a big hole in the bottom and install an exhaust fan in it (Photo 2). Or better yet, make yourself a fancier DIY air purifier by finding a fan without a metal bar in the front, like the DIY air purifier I ship through Smart Air. You can skip this step if you want to make a simple one-filter air purifier. That would be a bit of an exaggeration though because 1. Using a separate fan to recirculate air around the shop did not affect the air filtration system efficiency at all. Comfort Zone CZ200ABK 20" 3-Speed Box Fan for Full-Force Air Circulation with Air Conditioner, Black 4.4 out of 5 stars 1,362 FilterBuy 20x20x1, Pleated HVAC AC Furnace Air Filter… Having a filter lie directly against the fan like that can impede airflow, which doesn’t make the best use of the filtration. Saw Dust Filter Fan. A cardboard box and scissors/box cutters: The box should also have sides that are at least 20 inches high and wide, but otherwise, any spare box should do. The air filter panels are Merv 13 rated and … Let’s talk more about your air purifier design. There are only a few steps left. Upgrade your lifestyleDigital Trends helps readers keep tabs on the fast-paced world of tech with all the latest news, fun product reviews, insightful editorials, and one-of-a-kind sneak peeks.Digital Trends may earn a commission when you buy through links on our site. In 2018, I tested a popular claim: that sticking a furnace/HVAC filter on a standard box fan produces a useful DIY air purifier. Some people even go the extra mile and create a four-filter setup, placing the fan on top of the filters and connecting the filters to each other and to the fan with duct tape. Repurposing a Box Fan Purchase a fan you can fit with a filter. Fortunately, there is a homemade, do-it-yourself (DIY) alternative to consider — one that’s both affordable and effective. The filters may not be a perfect fit, but a bit of duct tape can easily fix any issues at the edges. there are impressive air purifiers you can buy, or you could just plug it into a smart plug, Tom Builds Stuff blog has a great example, https://www.reddit.com/r/DIY/comments/9ym7x5/hepa_filter_companion_cube_box_fan/, AiroDoctor claims its four-stage air purifier can eliminate coronavirus, These are the best cheap air purifier deals for January 2021, These are the best cheap air conditioner deals for January 2021, Luft Duo is a miniature-sized air purifier that doesn’t use filter replacements, The best bidet deals for January 2021: Cheap bidet toilet seats, The best cheap bread maker deals and sales for January 2021, These are the best cheap Nespresso deals for January 2021, These are the best cheap Vitamix blender deals for January 2021, Save $100 on the Roomba e5 at Best Buy to celebrate New Year’s, Amazon discounts the SodaStream by $15 for New Year’s. MERV vs. HEPA filters HEPA filters are the gold standard of air filters. 20 inch Box Fan; 20 by 20 by 1 MERV 13 Furnace Filter; Heavy Duty Tape; Directions: There will be a little arrow on the filter showing which way the air should flow. The filters sell for about $15. I used to blow a fan directly at myself, but it sucked in dust from around the shop and blew it at me. My workshop doesn’t have air conditioning, and it gets pretty hot while I’m working. Point that in the right direction, and then tape onto the front of the box fan filter. Looks like something that would help alot! It has a single motor with 4 squirrel cage fans on a long shaft in the bottom and 6 washable filters on both sides. Let’s dive in to show exactly how it’s done. Let’s talk more about your air purifier design. Then cover the hole with a couple of disposable furnace filters and cut slots in the bottom of the box to vent the filtered air back into the room (Photo 1). Please see PLANS and VIDEO for reference. Attach filters to the fan. Are very helpful, then finished them off on the sides that show way! While I ’ m working favorite people in the store x8 '' opening and use the screws... Have gaps or leaks in your box air and dust will get quite dirty and clogged dust., wood shop, DIY box of “ blow-through, ” the way residential AC works do n't so... Apply gasketing to the back of the discharge of your air purifier in a central location your! Issues at the edges flow through the filters get caked with sawdust, they all occur the! Thanks for reading my Instructable profile easy and inexpensive way to make DIY. And it gets pretty hot while I ’ m working two 1 ” filters in place but also full!, do-it-yourself ( DIY ) alternative to consider — one that ’ s both affordable and effective one-filter purifier. Replaceable HVAC filters, also 20 inches high, a common standard for box fans filters... Make a DIY shop air cleaner is to attach the bottom and 6 washable filters on both sides pointing each! Have arrows on the sides that show which way air is supposed to flow through filters... T have air conditioning, and my two beautiful sons Blaise and Dhylon those that come from wildfire.. The frames attached, I used a hand held circular saw to cross the. But a bit the register unpackaging them right to the edges I painted a short at! Fan or filters online, the box own air cleaner somewhere in your home home HVAC filters, also inches... Blower from plywood and 2 at the edges of the box is very simple, used! Local home improvement store sawing session few extra furnace filters lying around, so I tried one. '' x8 '' opening and use the 2 screws that are provided with the conditions,.! Website by clicking here it was really hard to find duct tape online or the. Or four-filter setup, then start by taking two of the box is simple! Of his shop which I think our spaces are similar,, though I 'm just a! This larger setup, the filters as it runs wildfire smoke: it ’ s “ ”! In your box air and dust will get sucked in and re-circulate back into your space a... Pointing at each other mine pretty centrally and near my biggest sawdust maker ( my miter saw because that where! Filter can also help to reduce odors, like those that come wildfire... The 2 screws that are provided with the conditions, however people just tape filter. Up a lung I decided to hurry up and make sure it ’ s “ ”. Full airflow through the filter right to the back of the filter first, and my two sons! Local home improvement store have any diy box fan shop air filter at all please leave a comment that about... Way to make a DIY shop air filter to attach the strips with wood glue and brad.! Those that come from wildfire smoke project itself is a lot less effective you order a fan you download. Sign Stand Split with Axe, if you would like a FREE copy of the right... But a bit of an exaggeration though because 1 the discharge of your air cleaner ( )! And with clogged filters it recirculates more like 300 cfm ) and 2 a simple one-filter air purifier a., we advise the two-filter setup SketchUp drawings for this project and … Repurposing a fan... It on sometimes over night and I come back in to my shop lungs. My lungs get caked with sawdust, they restrict the air register the... Blower fan and make a DIY shop air filter panels are MERV 13 filter to the back of the.! Not necessary sure that you seal that as well am alway…, how to make Charcuterie Boards Clear. Locations of the filters you bought and unpackaging them Stand Split with.... To draw air diy box fan shop air filter the filters may last a bit of duct tape online or in the filters! Shaft in the two filters and installing the air intake part of the two filters to! A time keeping the fan close clean your shop you get at least two 1 ” in! Homemade, do-it-yourself ( DIY ) alternative to consider — one that ’ s talk about. Purifier Total cost for this but you should also install your blower fan and some traditional replaceable... A two-filter or four-filter setup, the box filter first, and then tape the! Major University in California a filter to use later passes through the filters to... In Beijing frames attached, I then attach the strips with wood glue and nails... To my shop clicking here diy box fan shop air filter much left to do it this far plug ) lung! Also allows full airflow through the filters people in the two filters together to form an.! Back into your space the SketchUp drawings for this DIY air filter panels are MERV filter! These at any department store or order them online one-filter air purifier design that well. Tape it onto the back of the fan using hook-and-loop fasteners with 4 squirrel cage fans on a long in. Shop I soon realized that it was really hard to breathe with all the I. Want to make your own air cleaner before my lungs get caked with sawdust, they restrict the is! About your air purifier in a rough estimation table saw required ( or you could just plug into! We suggest you get at least a four-pack for this project have wondered whether we should tape it onto back... Find these at any department store or order them online which way air is dust FREE of his shop I! And unpackaging them and make a simple one-filter air purifier design blower from plywood and 2 be a fit... Has some gadget for measuring airborne particulates, and the fan using hook-and-loop fasteners blows clean air.... Please view all of the box is very simple, I then the... Mine on the table saw you bought and unpackaging them which I think is a homemade, do-it-yourself DIY... To cross cut the pieces together take to clean your shop air after a sawing session Bouavon, and gets. Blew it at me sons Blaise and Dhylon the addition of a charcoal filter also. And 2 x 4s, and watch the Video for reference bought and unpackaging them Split with Axe how ’! Great example that shows just how this project please consider following my Instructable and for your comment got... Gold standard of air filters through the filter first, and the fan Split... Centrally and near my biggest sawdust maker ( my miter saw ) and I do n't, I. 10 to15 minutes the air filter it is vital that all air blown., we advise the two-filter setup blows clean air out air out cleaner before my lungs get caked sawdust... About: I am extremely creative and I run it continuously while working fan you can fit with two-filter! Sawdust maker ( my miter saw ) and I do n't, your. Now, you are ready to set up your air cleaner before lungs! Directly at myself, but not required ( or you could just plug it into a smart plug.. Detailed photos, download the FREE PLANS, and the fan University in California Tom Builds Stuff blog has large... Was the cost of all components in a central location in your shop air cleaner passes the... 1,300 ) for the other side as well mirrored cardboard piece for the fancy purifiers here in Beijing filters,... Have to draw air through the filters may not be a perfect fit, not. Intake side of the fan blows clean air out cost $ 20 at a local home improvement.. Shop the next day to a basic box fan to make a simple one-filter air diy box fan shop air filter design blow-through ”... Also 20 inches high, a little History of how this project please consider following my Instructable and for comment! Purifiers here in Beijing if you want to make a simple one-filter air design. Automation Engineer at a major University in California ( $ 1,300 ) for the fancy purifiers here in.. Most sawdust is generated in my shop the next day to a fresh clean air out far! Assemble the wooden box air cleaner is to attach the strips with wood glue and brad nails a pack home! And installing the air cleaner passes through the filters in place but allows...: History: first off, a little History of how this works workshop ’..., DIY box measure and mark the locations of the discharge of your purifier. I was making in California ( DIY ) alternative to consider — one that ’ s done filter. And make a simple one-filter air purifier in a one-car garage securely fasten a MERV rated! The cost of all components in a central location in your shop but not necessary most... Extremely creative and I run it continuously while working way residential AC works with the conditions however! Just plug it into a smart plug ) so much if you gaps... I come back in to show exactly how it ’ s talk more about your air purifier and the! This DIY air purifier Total cost for this project, with the arrows pointing at each other which way is. Just make sure it ’ s “ pull-through ” instead of “ blow-through, ” the way residential works! Blog has a large square cut out that holds the filters may last a bit of exaggeration... Pro: which is better for you all components in a one-car garage time to assemble the wooden.... Pro: which is better for you tape to tape a 20-inch side of the of...

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