The Tom Builds Stuff blog has a great example that shows just how this works. 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. The filters sell for about $15. I measure and mark the locations of the filter frames and attach the strips with wood glue and brad nails. Jan 4, 2014 - Explore Stephen Underwood's board "DIY - Box Fan Air Filter" on Pinterest. Railroad Rail Lantern / Sign Stand Split With Axe. Saw Dust Filter Fan. 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. 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… Place your two filters together, with the arrows pointing at each other. Build a box, cut a big hole in the bottom and install an exhaust fan in it (Photo 2). I think our spaces are similar, ,though I'm just in a one-car garage. If they start looking dirty, it’s probably time to quickly disassemble and replace them with new versions to keep the purifier working optimally. If you want to do it this way, just make sure the filter arrows are facing toward the back of the fan. Let’s talk more about your air purifier design. 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. 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 … Nest Hello vs. Ring Video Doorbell Pro: Which is better for you? Duct tape: It’s pretty easy to find duct tape online or in the store. I am extremely creative and I am alway…, How to Make Charcuterie Boards Using Clear Acrylic Templates. Looks like something that would help alot! After coughing up a lung I decided to hurry up and make a DIY Shop Air Cleaner before my lungs get caked with sawdust. ... Best compact DIY Box Fan Filtration System ... (MERV 13) filter 6 pack (Highly recommended for single filter box fan air filtration setup. Attach filters to the fan. I leave it on sometimes over night and I come back in to my shop the next day to a fresh clean air shop. It has a single motor with 4 squirrel cage fans on a long shaft in the bottom and 6 washable filters on both sides. My favorite people in the world are my wife Bouavon, and my two beautiful sons Blaise and Dhylon. Over time, these filters will get quite dirty and clogged with dust. 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. These filters sell for about $15 at your local hardware store. That’s “pull-through” instead of “blow-through,” the way residential AC works. Now it is time to assemble the wooden box. You can skip this step if you want to make a simple one-filter air purifier. Insert the air register into the 8"x8" opening and use the 2 screws that are provided with the register. Having a filter lie directly against the fan like that can impede airflow, which doesn’t make the best use of the filtration. Once I found sawdust is a carcinogen (yes, really) I always wear a mask while working, but filtration still makes a lot of sense. A typical HVAC filter is designed to be replaced every several months or so. Point that in the right direction, and then tape onto the front of the box fan filter. Compare that to 8,000 RMB ($1,300) for the fancy purifiers here in Beijing. The construction of the box is very simple, I used glue and brad nails to attach the pieces together. 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. I use 20X20 box fans. All rights reserved. If you have gaps or leaks in your box air and dust will get sucked in and re-circulate back into your space. 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. Now, you are ready to set up your air purifier in a central location in your home. 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. With a two-filter or four-filter setup, the filters may last a bit longer, but you should still keep an eye on them. 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. Let’s talk more about your air purifier design. I made the spot for the 5” filter so that one day I can put a 20”x20”x5” MERV 16 filter … As we mentioned above, some people just tape the filter right to the back of the box fan and call it a day. A model with a timer is nice, but not required (or you could just plug it into a smart plug). 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. It doesn’t take that much more work, and with greater airflow through two filters, the DIY purifier is much more effective. Now, bring out your duct tape again, and seal the edges while attaching the cardboard to the top and bottom of your DIY purifier. Now, use your duct tape to tape a 20-inch side of the two filters together to form an angle. It is vital that all air being blown out of the discharge of your air cleaner passes through the filters first. 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. What was the cost of all components in a rough estimation? Hope this helps! 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. At this point you should also install your blower fan and make sure that you seal that as well. 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. If you’re going to buy the HEPA filter linked above, you’ll need to shop around for a smaller box fan. If you have any questions at all please leave a comment. Please view all of the detailed photos, download the FREE PLANS, and watch the VIDEO for reference. Ideally, find a fan that is the same … These can be hard to find quickly with the conditions, however. 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. A pack of home HVAC filters, also 20 inches: You can find these at any department store or order them online. Remember to choose the right size. Let’s dive in to show exactly how it’s done. The fan/filter captured the spray paint \'drift\' perfectly (although I still had to wear a respirator and thoroughly air out the apartments). The project itself is a homemade shop air filter. Hey there, thanks for reading my Instructable and for your comment! Matthais mounted his air cleaner(s) in the corner of his shop which I think is a lot less 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. I don't think that it actually does provide 420 cfm (more like 300 cfm) and 2. 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. This is where your cardboard comes in. 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. 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. I used to blow a fan directly at myself, but it sucked in dust from around the shop and blew it at me. 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. 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. Digital Trends may earn a commission when you buy through links on our site. The air filter panels are Merv 13 rated and … This is what I came up with. 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. We suggest you get at least a four-pack for this project. That would be a bit of an exaggeration though because 1. 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. 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. Glue-ups, finishing, welding, general repairs, etcetera, etcetera, they all occur in the same space. There are only a few steps left. Now you are almost done. Air filters like these will have arrows on the sides that show which way air is supposed to flow through the filter. The other he gave to me to use later. If you would like a FREE copy of the SketchUp drawings for this project you can download them from my website by clicking HERE. 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. 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. 20x20 Fan With Air Filter. (Note: Some have wondered whether we should tape it onto the back of the box fan filter. I am very glad that I took the few hours it took me to build this project. That’s fine — air will enter through the filter on the back of the fan and then exit through the front of the fan. 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. Any type of sealant will work for this but you must not skip this step. 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. I mounted mine pretty centrally and near my biggest sawdust maker (my miter saw) and I run it continuously while working. 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. 3 years ago. Share it with us! 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. Reply 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. Now the fan will have to draw air through the filters as it runs. 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. MERV vs. HEPA filters HEPA filters are the gold standard of air filters. 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. This would be a good projec… 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. 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. After coughing up a lung I decided to hurry up and make a DIY Shop Air Cleaner before my lungs get caked with sawdust. Give this inexpensive DIY air filter a try. 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. Thank you so much if you made it this far. 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. I’m not talking about venting – that’s still something else I will do – but rather gett… 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. Securely fasten a MERV 13 filter to the air intake side of the fan. These “filter fans” can filter out the small particles that … This is what I came up with. 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