How To Build An Affordable Air Purifier (DIY)
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- Опубликовано: 13 сен 2024
- Building a air purifier system for your home is easy (and affordable!). In this video, I'll take you step-by-step so you can build your own. Download the Start Preparing! Survival Guide here: cityprepping.t... ... Start your preparedness journey: cityprepping.t...
Here are the items I purchased:
* Merv 13, 20x20x2 air filters: cityprepping.t...
* 20" box fan: cityprepping.t...
* Duct tape: cityprepping.t...
Step-by-step instructions (image):
* imgur.com/GKaDZuX
Here's the scientific evidence showing how this works:
* Cadnum, J.L. et al. (2023) ‘Effectiveness of commercial portable air cleaners and a do-it-yourself minimum efficiency reporting value (MERV)-13 filter box fan air cleaner in reducing aerosolized bacteriophage MS2’, Infection Control & Hospital Epidemiology, 44(4), pp. 663-665. Available at: doi.org/10.101....
* Dal Porto, R. et al. (2022) ‘Characterizing the performance of a do-it-yourself (DIY) box fan air filter’, Aerosol Science and Technology, 56(6), pp. 564-572. Available at: doi.org/10.108....
* Derk, R.C. et al. (2023) ‘Efficacy of Do-It-Yourself air filtration units in reducing exposure to simulated respiratory aerosols’, Building and Environment, 229, p. 109920. Available at: doi.org/10.101....
* Dodson, R.E. et al. (2023) ‘Does Using Corsi-Rosenthal Boxes to Mitigate COVID-19 Transmission Also Reduce Indoor Air Concentrations of PFAS and Phthalates?’, Environmental Science & Technology, 57(1), pp. 415-427. Available at: doi.org/10.102....
* Gasparrini, W. et al. (2022) Testing the Efficacy of the ‘Corsi-Rosenthal’ Box Fan Filter in an Active Classroom Environment. preprint. Chemistry. Available at: doi.org/10.264....
* He, R.(何瑞辰) et al. (2021) ‘Airborne transmission of COVID-19 and mitigation using box fan air cleaners in a poorly ventilated classroom’, Physics of Fluids, 33(5), p. 057107. Available at: doi.org/10.106....
* Holder, A.L., Halliday, H.S. and Virtaranta, L. (2022) ‘Impact of do-it-yourself air cleaner design on the reduction of simulated wildfire smoke in a controlled chamber environment’, Indoor Air, 32(11), p. e13163. Available at: doi.org/10.111....
* Li, L. et al. (2022) ‘Effect of low-cost recirculating portable air filtration on aerosol particle deposition and concentration in a conference room: Experiment, theory, and simulation comparison’, Journal of Aerosol Science, 166, p. 106048. Available at: doi.org/10.101....
* May, N.W., Dixon, C. and Jaffe, D.A. (2021) ‘Impact of Wildfire Smoke Events on Indoor Air Quality and Evaluation of a Low-cost Filtration Method’, Aerosol and Air Quality Research, 21(7), p. 210046. Available at: doi.org/10.420....
* Srikrishna, D. (2022a) ‘Can 10× cheaper, lower-efficiency particulate air filters and box fans complement High-Efficiency Particulate Air (HEPA) purifiers to help control the COVID-19 pandemic?’, Science of The Total Environment, 838, p. 155884. Available at: doi.org/10.101....
* Srikrishna, D. (2022b) ‘Long-term experience with rapid air filtration (6 to 15 air changes per hour) in a K-5 elementary school using HEPA and Do-It-Yourself (DIY) air purifiers during the COVID-19 pandemic’. medRxiv, p. 2022.11.05.22281734. Available at: doi.org/10.110....
* Tham, K.W. et al. (2021) ‘Performance characteristics of a fan filter unit (FFU) in mitigating particulate matter levels in a naturally ventilated classroom during haze conditions’, Indoor Air, 31(3), pp. 795-806. Available at: doi.org/10.111....
* Van Valkinburgh, K. et al. (2022) ‘Assessing Mitigation Strategies to Reduce Potential Exposures to Indoor Particle Release Events’, Aerosol and Air Quality Research, 22(9), p. 220054. Available at: doi.org/10.420....
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Here are the items I purchased:
* Merv 13, 20x20x2 air filters: a.co/d/0O3c7Xj
* 20" box fan: www.amazon.com/s?k=box+fan
* Duct tape: www.amazon.com/s?k=duct+tape&crid=7OXBQQTAWCYQ&sprefix=duct+tape%2Caps%2C134&ref=nb_sb_noss_2
OK, COLOR ME STUPID LOL. SO IS THIS SUPPOSE TO SIT IN ONES LIVING ROOM OR ANY ROOM. WHY NOT BUY A HEPA FILTER AND LEAVE IT AT THAT? I TRULY DON'T GET THIS CONCEPT. ALSO, WITH NO GRID TO POWER IT, IT'D BE USELESS. PLEASE EXPLAIN THIS. THANKS
This list of parts is so helpful. Thanks
What about the bottom? Why not use another of the cardboard boxes and block the bottom off properly so that you don't get air sucking underneath the bottom edge of the filters? I'd also make your shroud hole smaller and reverse the cardboard so that you have the plain side showing.
@@wheepingwillow24u17 You just sit it in whatever space you want to filter the air in. It's not for a grid down situation, it's for the current bushfires etc. We've had several years where the smoke has been horrific from bushfires, and an air filtration system was desperately needed for anyone that had breathing/lung problems. We still had power the whole time. The filters that he used ARE HEPA filters. You can't use those filters without a fan though, they don't do anything without airflow.
I don't know how you came up with under $60. Try $106.26. But nice try. These filters can be found for a lot less.
Awesome DIY project. Very important nowadays when the air is filled with particles from wildfires.
Thanks!
People don’t think about this much. We have air filters- they help if you have allergies. This is such an affordable way to improve your breathing!
I appreciate all of your videos but the projects are my favorite. The more I can DO rather than stress, is the best. Thanks again, Kris.
working on switching to more projects on the channel :)
I agree, being proactive helps balance the things we can't control with the things we can. Thinking outside the box is easier for some and for us that it isn't these project videos are vital.
Your box will work well for filtering inside air. Also living in a dry wildfire area I've taken a slightly different approach. I've added a second layer of filters to my roof mounted swamp cooler. Like with your box, sealed so all air passes through the filters. The wet filters aid in catching the particulates from the air being drawn into my home. The fan adding positive pressure to the air inside my home helping prevent smoke from entering around doors, windows, etc. Plus it's efficiently cooling my home in the process. Most wildfires here being in the heat of summer I've found this method works best for me.
The merv13 filter rating is the right rating for floating viral removal. Don't be tempted to reduce the filtration rating if this is your goal. This rating can be hard to get in pandemic situations so if you plan ahead stock some of these filters in your preps!
Great stuff. If you don’t have access to filters, I’ve cut large holes on 4 sides of a cardboard box and pulled 2 T-shirts over the box to act as filters. Then attached the fan the same way.
and you can wash shirts and use again 👍🏾
Lasko now sells a fan with a holding bay for a 20x20x1 Merv 10 or 11 filter... i have one in my living room... these are by far the best whole house air filtration units on the market... even professional air cleaning systems for wood shops can not move as much air per hour as one of these...
Built one of these at the start of the pandemic when masks ran out and not as much was known about Covid. Got filters that I believe would have been good enough for viruses and I think this would still have been good if someone in our house got sick and we could purify the air a bit. Maybe excessive for Covid, but works great as a DIY air purifier for allergies, smoke, a dusty shop, etc.
Very cool! Props to the dude who made the smoke demonstration possible.😁
😂😂
One can also screw or stick that filter on to the back of a shop fan. Not as good but better than nothing and super cheap and easy.
Definitely go for MERV13 or higher!! MERV11 would be less effective but better than nothing. Close up every window and make sure the weather stripping on your doors are good!
I built a simplified version of this last year using 20x16x2 filters and even though it is not as efficient as your design it does a fantastic job of eliminating wildfire odor in the house! This is sooo much cheaper than replacing the expensive filters in my fancy air purifier. Your shroud has given me an idea of how I might frame it so it doesn’t have to be taped enabling more compact storage and the ability to use the fan for other stuff. (Not as efficient as your design but still effective for the amount of smoke that I usually deal with.) I hope everyone understands that this really works!! Thanks for sharing!
BTW I used the least expensive filters that I could find so it really was about $50 including the fan which I picked up on sale.
I’ve built 2 of them the same way over the years. Merv 13 was too restrictive for the motor and it burned out in a week both times. I then used a Merv 11 and it has lasted over a year now. Hope this helps.
What do you mean burned down?
The fans don't last like this and they're being made cheaper every year so I really question the design.
You don't even have to have 4 air filters, just one taped directly into the fan with the air flow directions aligned will also work. I'm sure you'd need to replace the filter more often. Just tape works, no wire, screws, whatever else you listed.
The shroud is the key...brilliant. thanks. I made one similar years ago with only one filter and no shroud. It kinda worked, but I can see how this would be far more efficient.
Finally, something affordable....🎉🎉🎉🎉🎉
Thank you....
Adding yet another entry to my library under "DIY air filters". This is different than the others I have plans for, but the more the better. I especially like the use of the box the fan came in as part of the build, great use and re-use of materials.
11:30 I flashed back to grade school going over to my friends house with her mom in the recliner smoking a cigarette into and air filter she kept on the side table...classy lol!
Bless her heart 😊
Yes the year for us 1990
😂 took me back
My son made one of these last week because of storms bringing in the smoke and lots of pollen. I laughed at him and now I guess I need to eat crow and apologize.
It does look ridiculous at first.
@@DaSeanTx if it looks stupid but it works it aint stupid. :)
@@That.Lady.withtheYarn for sure lol. Sometimes that’s just the way it is
My parents did the same thing when I built mine and regretted making fun of it when it worked😂
Haha all that glitters is not gold that’s why they call it fools gold.
Sometimes don’t judge a book by it’s cover 👍
This build is super practical because it can be stored in a much smaller package.👍
In an instant of genius, I slept 2 nights with the window open while we were getting most of the smoke in Quebec. Took me almost 2 weeks to stop coughing and I live pretty far from those fires.
I did buy a small air purifier for the bedroom afterwards and been running the AC continuously since. If you snore or barely breathe through the nose at night, you should try a HEPA filter in your bedroom.
Good work and a good design.
Thanks for this useful information.
You can also buy carbon pre filters for smoke usually near the HEPA filters.
This is a fun and so useful video. I could use this as a science activity with my children. Thanks .
Thank you for sharing the video. I agree that given the current situation in the USA, it might be helpful for us to consider building one or more of these to protect ourselves from smoke, dust, and pollen .
These cubes fans are excellent on so many levels.
The fact that the fan creates low pressure increases its structural integrity
It is a low energy, low resistances, means to steadily purify air.
You can vacuum that outside carefully and reinvigorate the filters.
These have so many applications.
They are great for general air-quality
They are a superb measure for wildfire smoke or other particulate contamination during industrial accidents or fires.
If there was a radiological incident, these would at least filter out particulate based contaminants.
Just be wary that the outside of the device is going to be steadily coated with whatever it is you are trying to filter.
Great job
Thanks!
Put some ice on a tray in the box and turn it to a make shift AC unit for indoor.
Hi! I've had asthma all of my life and then long covid had fun with my lungs. I'm currently farm sitting and living in a very old house that has a fair amount of bugs and dust. A person living on disability would have a hard time buying an expensive air purifier, so I really LOVE this video. Thank you so much!!!
Was looking for the activated charcoal handpump air filter made with a vacuum bag, a bottle full of aquarium charcoal, mattress airpump, and duct tape and just saw this. This is a great automatic low energy, affordable air filter set up. Thank you so much, Kris and team and City Prepping!
Happy Father's Day! This is just like something my Dad would have built as a project with me. Good job!
Thank you for creating this step-by-step creation of an Air Purifier for us to follow, which you have made simple and low cost. Always love and appreciate you for your teaching style and important "How To" instructions on so many important devices.
Great idea - could be modified to use a dc fan (adjusting size of cube appropriately) - in case the power is out.
Thank you again for your great ideas!
Excellent job. Thanks for sharing. I’m already getting the Canadian smoke. This will come in handy.
Thank you! I really enjoy your how to videos. I always learn something. Of all the things i will miss in shtf, you are one of the top 10!
Great diy project to keep in my pocket. Thanks for all you do, Kris.
I've been taping filters to the backs of my box fans for a couple of years to help with dust and cat hair. It really helps.
Wow, this is brilliant, affordable, practical and something that can be used now rather than if or when it all goes to pot!
Can I please ask where is the best place to position this fan in the house? Or is the purpose of this to filter the air already circulating in a room
I taped a hepa filter to the back of my box fan. It worked good.
I started watching your channel for the projects. I miss your projects. More projects, please.Thanks for this. Anyone can talk but when you show us something - that's what separates you from others. My question is, Why not simply use the tape to cover the corners?
Doing doubles I've missed a few videos, but I caught up, and along with the phone charger, this is one of the videos I feel offers practical everyday info.
As a person with allergies , I thank you for This posting! I already have one of those expensive air purifiers, but it sometimes is not enough and this year the allergies and asthma are Really bad! Of. Course in the PNW we have been fairly free from the smoke from Canada, except for a few days, there is July and August to get through. I just may set up one of these as an extra air purifier. Wouldn't hurt and if it helps me breath, even better. Again, thank you!
White duct tape and add color to topper using construction or wrapping paper, could use markers. Usually use box cutter tool very carefully tough with sizzors.
Also, could be covered loosely with muslin over the filters,to increase filtration or cotton?
Looks light weight and portable.
Could be turned on its side to clear air as in , smoke from burnt food?
Thank you
Good project.
Frugal man
Love this diy !! Easy for anyone to make- thank you
Fantastic useful and easy project. Many thanks, Kris!
This is awesome City Prepping! Thank you!
This is much nicer than the one I built two years ago. I just cut a hole in the filter. I had a shroad from a car radiator. I think I'm going to buy some more filters and use my box fan. What a great idea ty.
The size of the hole in the shroud matters - it optimizes airflow through the filters/unit.
Could it overheat? I had a window fan in the bathroom and when I shut the bathroom door there was too much back pressure in the room and it overheated. Another fan the same type as I had in the bathroom was in our bedroom and when I shut the bedroom door it started smoking. Just a caution.
Very cool and easy. Looks like something you can build as needed too, so you don't really need to plan far ahead with this.
Great tip. We keep air purifiers due to the annual burning of the farmland. Thanks, Chris, and God bless.
I've been putting a filters on box fans you years. I just learned something. The Shroud!! I will definitely be trying it out. I'm do to change all of them. Every room gets one and it makes great background noise for sleeping too. Merv 13 of course.
Can you let us know how your shroud project worked?
I've been doing this setup for years. Use 2 filters instead of 4. In place of the other 2 filters, use cardboard.
Really enjoyed this interactive video style. I would have never thought to do this myself. Excellent explanations.
Hi,
I don't understand why the air flow is this way instead of reversed where all the "dirt" would be kept inside the box. I like the project, I just wonder why not build it the other way so when it's well used all the dust/dirt is on the inside for easier disposal. Also if the box is bumped or moved there isn't all that filter dust on the outside of it. The draw back I guess is the fan get's dirty too since it's the dirty air coming through.
Friendly advice. You could add some AC insulation foam strips at the business end where you introduce the fan.
Thank you for this great tutorial!
I have wondered about something like this for years. Awesome!!!!!!!
Thank you :)
Durring the "camp fire "🔥 in California, I used one filter taped to the same box fan with excellent results. It was good for inside of my apartment.
Love it I was one of many that commented this on your last video!
I love projects.
That is so well thought out, and you explained how to do it well. Thank you.
What a great idea. Thank you for showing us how to build one.
Also: you can use the profile for window mosquito net to build a "prefilter" mesh so the main filters las a little bit longer. Or a piece of fabric around works just as fine!!
You can build super simple box for this from plywood and make it look nice
Awesome video man. Great idea.
That would make a good science project for a young student.
Great DYI idea!
Thank you good instruction video for the lay person.
Next time do not use scissors. Try using a boxcutter razor blade tool. It cuts cardboard much easier.
👍😜Always informative ,& entertaining Brother😁A Blessed Fathers Day to all the Pop's out there💒God Bless us All🇺🇸🙏👎
Wonderful! Thank you for sharing this project. 🎉
I enjoyed the project
Fantastic, thank you!
Great how to. Thank you for posting🙏🏼🇺🇸
Thanks!
Cool
So the fan is pointed upward, sucking air through the outer sides of the filters, correct?
Add a UVC light and you'll kill viruses as well. Great video on a simple and effective filter system.
Thanks
Great items to have on hand. Having just gone through the “wildfire smoke” it’s not easy to find air purifiers locally.
Brillant and affordable.
So cool! Thanks for showing us😊
Slight alternate idea...
Same materials, just more of them.
It will be more expensive, but you will NOT have to tape up the filters every time you buy/find new ones.
Buy *4* 20' box fans, and use all 4 boxes (not the fans) to make a housing to hold the filters.
So whenever your current filters run their full lifespan and they cannot be cleaned safely, you can remove them and insert new ones to continue filtering the air you breath. (Might need 5 boxes...)
How would that work? The boxes are solid. Wouldn't it block the filters. If it works then purchasing 20 by 20 card board boxes would be less expensive and just purchase one fan.
I guess you could do a dif version by using a large heavy cardboard box of the right size, and just having one filter put into a side and the other three sides cardboard, so you wouldnt have to use as many filters. of course it would only clean one fourth the air. clever apparatus by the way on your part.
Great demo. Thanks Kris
It's closer to $100, but still a bargain! Highly effective. Also, one can run this off a small battery pack if grid down.
Ingenious design!
I think I will pick up some filters too, get them before you need them 😉
I'm in 🇨🇦 but haven't had any smoke 🤞yet on the west coast .
We Get smoke every summer for the last few yrs
Scary times we live in .
Good idea
You mean for 100 bucks, not 50
Smh, even the links you put show it
100 ain't bad, but lets get the pricing info correct
Thank you for this diy video.
Some good ideas here. I'd like to suggest, to reduce the fan noise, why not shroud the exhaust? Just use cardboard, perhaps lined with something soft, to shroud the exhaust of the fan. If you add a curve to it the noise reduction will be far greater.
Wow this great thank you!
Thank you for all you do
Do you think it would be a good idea to add an extra filter directly under the fan?
Drop in/ changeable filters? Next project! 😁
Can I put a cloth or spandex cover over the over/outside the filter to make it more appealing?
Cool video!
Which filters do you strongly recommend for removing the following pollutants: pet allergens, contaminants that make me cough and sneeze, pollutants that make me use my asthma inhaler?