How to Make a DIY Air Purifier
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- Опубликовано: 29 авг 2024
- We've done extensive research into the tools to help you prepare for the next wildfire, but we get it-the air quality is bad now, and you're missing a few items on that list (such as an air purifier). This quick fix may help mitigate the conditions in the meantime.
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How to Make a DIY Air Purifier: wrctr.co/2GfrwFj
Our guide to the best air purifiers: wrctr.co/2RmAGGc
I'm in Eugene Oregon right now during the wildfires and this DIY air purifier is saving my lungs
I'm in Niš, Serbia, and I I just figured out that I won't live long enough to see the end of pandemics if I don't make/buy one. No wildfires, just regular pollution. Ordered one yesterday for $120 because I didn't think of googling "how to make a DIY air purifier" before that :D
Sorry you guys are going through a massive heat wave right now and hope that we get rain soon to bring everything back to normal
(temperature wise) I sure miss my home state
Hi Oregon!!!!! 🙋🏼♀️
Me too!
I'm reading a zombie apocalypse book set in Eugene
Us Californians thank you for your video! I've been feeling light headed and nauseous for 2 days because of the smoke and I cannot find a single air purifier in stock in Northern CA. Again, THANK YOU!!!
just got the filter can find a damn box fan for miles.....
@@Eric-nu3wh Amazon. Less than $30 three days ago.
For those who think this won't work because it doesn't filter 100% of dust that's pulled through, keep in mind that even a Hepa filter exhausts the clean air into the dirty air you're trying to clean so it takes multiple passes anyways. If you can pass twice the volume of air with 1/2 the filtration effectiveness, the end result is the same.
@@silverjuly6217
Thanks for that link. I've been running 3 such filters around the house non-stop on low speed for months now and can't believe we used to breath in all that dust continuously. Now when a ray of sunshine comes through the window, there's only a few floating specs of dust illuminated instead of the cloud of it I used to see.
I've been doing this for years. Thing I like to do is Add a very light spray of orange glow oil onto the filter. I like the smell and The oil really captures all kinds of Particles. It's like an air freshener with a purpose.
The filter goes BEHIND the fan, not in front, following the air flow diagram. Blowing the air into the filter is backwards and you will end up blowing the allergens back into the surrounding air.
It's true, best to put the filter on the intake side of the fan so the air gets filtered first before blowing through the fan. Keeps the fan clean and the pollutants stuck to the filter. Good point.
Yeah I keep seeing all these videos where the air is pushing thru the filter it just didn't make sense
The fan pulls air into the filter? If you're facing the filter, you see particulate matter build up on it?
How do you get around the power cord when taping the filter behind the fan? Honest question here, not trying to start anything.
@@occfilms To be honest, after watching more closely, I have never seen a fan with a cord that plugs in right into the fan motor like that. All of the box fans I've seen from the big box stores have the cord ran to one side of the frame, which is much easier to tape off. Yeah, that fan is weird, never seen that. On the flip side and if you had that fan shown, build a box of five air filters and run the cord through a corner. The more air filters, such as in a box, will increase the efficiency of the entire unit, allowing more CFM of air to flow.
Speaking of longevity. Been using the Coway Mighty for 4 years, and used other air purifiers. My Winix is a lot nosier and I bought it around the same time. Just “feels” dirtier too.
The Mighty is still pretty quiet, easier to clean, and I can see it lasting another 4 years
Whoa, wouldn't I want to put the filter on the suck side of the fan and not the blow side? The blow side is going to maintain turbulence on the capturing filter, while the suck side would have consistent pressure. Right?
btw for anyone who's planning to do this: make sure you build it in a pull configuration with the fan *behind* the filter
why? isnt it the same as if you push the air through the front?
@@gunshotNrun The filtering is the same, but with a pull configuration you keep the fan itself cleaner since it's moving already-filtered air
@@lr6891 let me understand...i want to place the fan in order to suck air through the filter or to blow air through the filter? :)
@@todedragos you want to let the fan suck air through the filter, since that keeps the fan cleaner
You mean the filter behind the fan.
Also, I concur. Pull config works better too cause air will be working with the tape. In a push config, the air would be pushing against the tape.
shouldn't the filter be on the back /intake side of the fan since operations of furnaces are with filters on the intake , so I feel this should be set up the same. clean the air coming in and output fresh air. it will at least keep your fan free of dust.
You would be inhibiting the fan from sucking air in to some large degree by placing it on the back Also that accelerated air being pushed directing into the filter rather that being pulled into the filter is way more efficient in terms of actually cleaning the air.
Yes, it's best to put the filter on the intake side, because then the fan is sucking the filter to the fan and will even hold it on without tape. If you put it on the out side, you need a much better tape job to hold it on and the fan gets dirty. Either way the fan works equally hard to move air through the filter.
Ok that’s a relief I just built one with hepa filters PL’d them together and put it on the back side thinking that was how you did it. Should I put one on the front as well?
Wirecutter’s war against the Molekule continues
its funny how they responded lol, cant wait until they go out of biz
Molekule is such trash!
We used to be rich and now we are poor and my husband lost his job so I will try your advice 🙏
praying for you
Thanks for posting You're a lung saver! My state is currently on fire and I didn't have an air purifier and they're all sold out. But thanks to this video we'll be breathing easy tonight.
I'd recommend to put the filter in the back of the fan rather then the front.
If you look at most of the purifier designs the filter comes first then the fan.
With this current setup dirt/hair/particles still get through the fan and will be stuck on the blades so once you do remove the filter you'll end up blowing it back out.
this is not true when tested, and in most cases putting it in front will work better because the interaction between the fan and the filter creates an area of higher pressure and that's good for filtering for some reason
i have no idea how that works, but that's what an engineer had to say on the matter at Smart Air, who ran a crapton of open-data tests on air purifiers and sell DIY kits
Do you have access to many filter designs? I seem to remember you change the filter on the front on the filters I've had
what if you put a filter in front and back? 😮😮😮
Could only find 16x20 filters in my town in Oregon but just sealed the gaps with tap and it's made a MAJOR difference with smoke in the house.
Hi Oregon! 🙋🏼♀️
Yes I’m from there but now live in South Jersey which is okay but it’s not home cause nothing is familiar
Should go and visit Beaverton it’s a decent city just 20-25 miles right outside of Portland
I miss my home state but sorry that you guys are going through a massive heat wave and hope that it rains soon to cool things down
very cool, but wouldn't it be better if the filter was put on the back?
Thank you so much I have mold spores look like dust but red and blue shinny fiber everywhere in the house it what people calling morgellons fiber this will help us because I have mold toxicity
Use four of them and make a cube with cardboard at the bottom
I have severe eczema and I tried something similar with different parts. Let's hope it works. I got an actual HEPA filter tho cause I worry about allergens
Where do you put the filter? Front or back of the fan? You didn't specify?
Noticing the face of the filter is placed differently in all diy's videos. To me, the arrow on the filter should point towards the front of the fan when placed on the back. Hence the dimond side is up against the fan and the view of the filter from behind, shows the face with the pleated side and no diamon card board panel showing. Right?
Right, the air flow is in the direction of the arrow, so with the filter on the intake side of the fan, the arrow points towards the fan.
Do you put the filter in front of the fan pushing out air, or behind it, where the air is being sucked in? I am guessing behind.
Very handy right now in Alberta.
love the DIY options we want more and more... thank you!!!! muchas gracias
Thanks
I wish we could get box fans in the uk , I would so make this!
Better to put the filter in front or behind the fan??????
I've listened to this guy and put it in front, however it supposed to be behind the fan, and it make more sense as well as it works 99% better.
James J alright. I tried both at the same time and behind.. but those ways both make for very weak output..
@@ryandelaney4320 I'd put it only behind the fan ,cuz these fans don't have enough speed to handle two at the same time.
James J ok, I’ll try it.. too bad I don’t have one of those fancy testing devices to see just what kind of filtration is really taking place. But I’ll try putting it behind now
My air purifier pulls air from behind, so that sounds better.
This actually is better as a big fan will make less noise for the same air flow of a standard air purifier
Question: I notice you put the air filter on the front of the fan.....why not put the filter on the back side of the fan?.....suction will keep the air filter pressed against the fan (or you can still tape it)....and the blades will stay cleaner if the air coming in from the back side is cleaner.
Why not its a long term solution ?
A furnace filter on a box fan is just as permanent as a store bought HEPA filter. That was strange that he said that. I've been using both for several years and the main difference is one is cheaper than the other. They both clean the air equally well.
It would interesting to compare this to setting up with the filter on the exhaust side of the fan, so it if that traps the particles to the filter better, or if it serves only to disrupt what it catches and set it loose again
Overheats the fan and burns it out from exhaust side.
I followed this video to make a DIY filter but unfortunately after running for 5-10 minutes (even on low) I smell burning plastic. Is my fan being overworked? Any tips for how to prevent / mitigate?
Tried this. Placed the filter on the front side. Also placed in relation to how the filter packaging indicated the direction of air flow should go. Is it right that you don't feel much air coming out from filter?
Yes there s not much air flow
now try to put the filter on the right side of the fan lmao
Can you test milla air purifiers they’re running ads before your videos, also love the content
Can we use a hepa filter ?
Fifty people said this already so I'll say it again because no one scrolls. The filter goes on the back with the wire side against the fan. MERV 13 is the highest you can go before burning out the fan. Get a cheap replacement activated charcoal filter (carbon) to help with smells. A heavy duty fan is much better for just a few more $$
Too bad they don’t make 120mm/200mm Filters AFAIK.
Would love to do one with a computer fan just to play with
Just build a filter frame/box and mount a brushless computer fan (or several) in place of the cheap box fan. Static pressures may not be as high, and volume may be lower, but it would work.
I am living with the very bad air from the California wildfires. I am going to make one or more of these for starters because our air is terrible.
Which side do you put the air filter? The sucking side or the blowing side?
It could be more informative if you specified the filter differences. The air filter(FPR 9) you used on the box fan is a lot inferior to the HEPA filter that Coway uses. Even FPR 10 has about 10% lower removal rate compare to HEPA.
yes go watch their video about that, they have that covered, and he tells you in this video to buy the good ones and what material you should look for and the rating you want
@@Eric-nu3wh Yes, he did mention about somethings like, avoid blue fiberglass type filter, go for a white one that is rated 10~12. It's good information. But is this enough information when it comes to comparing A(Box fan with FPR9 filter) to B(Coway with HEPA filter)? I don't think so. When you compare two things you have to mention the major facts that may affect the result. As he said, the air purifier is pretty much all about fan & filter.
He did say what filters he used but didn't say anything about the functional differences between them. If you already knew this kind of stuff you could tell the final result is brought about the filter differences. But if you are new to this you would probably think A is just not good enough than B based on the given information in this video and that's not fair in my point of view.
you need to tape the corners. about the diameter of the fan blade or you will get blow back also put the fan on whatever side you want matters little. been doing this for many many years, its wierd seeing it on utube.
i tried this at home but wasn't sure i did it right because making a tight seal on it felt as though it was just blowing air backwards. like the fan is blasting air through the filter so hard and the filter is so fine the air just goes back the way it came so i questioned its effectiveness.
especially if your goal is to catch pet hair, the hair wouldn't really get "sucked in" and would get blown away instead.
id appreciate any help incase maybe i constructed it wrong. maybe the filter should go in the back where the intake is?
Sir can you tell me all the parts to make it here and with price plz tell me A to Z parts
That's a fan?
I can't find these type of square HEPA filters in Australia. What are they used for?
Thank you.
- California
How much time can these filters be used before needing to be changed? Are there signs to look out for or tests to determine if a filter should be changed?
when the filters look dirty
You can tell when the amount of air coming through decreases, and by then the filter will start to look dirty. We used one for 2 weeks of forest fire smoke, and it still works OK, but it turned brown, and a new one lets more air through.
do you put filter in back or in front of fan?
This type of DYI purifier actually works better than a lot of the brand built expensive purifier
Yea... Putting the filter in front is gonna built up dust inside the fan...
Thanks for sharing. Notice you put filter on front of fan. Correct?
It's much better to tape the filter on the intake side of the fan, which keeps the fan clean, and the turbulence of the fan doesn't blow pollutants off the filter and back into the room. See my video on that.
@@HartzHomestead Appreciate much!
If you’ve never used an air filter these are great. ruclips.net/user/postUgkx_dppjvjF8BYEmPSDTcgCUdRsgWYLXNHN I ended up with three after starting out with one. The noise level depends on the 1-3 settings with how hard you want the machine to work. You can also upgrade the filters and get one better for pet hair and smells which is a must have in my home. I noticed the air seemed lighter and easier to breathe when running the machine for the first time. Works great every time. Highly recommended!
is it blowing into the filter or away??????/
Have you tested the Oransi Erik and Oransi EJ120? We were just getting ready to buy one of those and saw this DIY video...
Great design. Be the family hero!! Go for a deep 4" to 5" thick element with MERV 17 though MERV 20 filters, typically used in surgical operating rooms, clean rooms, and other contexts that require absolute cleanliness. Pick them up online or at an industrial supply house.
would kill most fans
@@Retrofire-47 MERV 13 won't kill the fan though. Some guys on RUclips tested it to make sure.
How long would this last? Say I wanted to use this method to purify the air in the basement I sleep in. And I’d rather replace a cheap fan and filter than buy a several hundred dollar purifier
@@kasapbandy1776 The Filtrete allergen filters come with instructions to replace every three months. But you can replace them more often than that if needed.
Your page with DYI filter does not work.
please do a review of air filters for VOCs.
Could a carbon filter and fan which are the same type used in grow tents be used, the fan attached to a cylinder can with carbon inside and a hepa filter/sleeve on the can? There are quite a few for sale in my local area super cheap and thinking that I could use them to remove the never ending dust from internal building works recently completed in my house.
Does the filter go on the back of the fan or the front? I've seen both ways on different You Tube videos.
I think the back makes more sense since it would suction the filter on better as well as keep the fan cleaner.
Seriously, thank you so much! This is super helpful especially since all the stores around me have sold out of air purifiers. Definitely bought your recommended purifier for the future though.
Do a video on the Briiv air filter!
Why push the air through the filter? Why not pull it through (i.e. put the filter on the other side of the fan)? Won't that keep the fan blades cleaner?
yes.
Because the cord gets in the way on the other side.
Power cord yes, and this isn’t a permanent solution
It definitely depends on the fan. I have a box fan where the cord comes off the side rather than the back and I used this method with the fan on the intake when I was doing renovation work and wanted to catch drywall and plaster dust.
@@Rina-jl1bq i just dented the filter frame around the power cord and sealed around it with extra tape. Working great for a month now.
Let me ask something!. Does this air purifier only suck the air? Or it even blow air
How long before replacing filter?
When the filter starts looking dirty and the air flow decreases. I found about 2 weeks of forest fire smoke slowed down the air flow enough that it was worth replacing.
I did this with MERV 13 air filter and the fan cannot handle it. I smell burning smell from motor. Anyone has same problem?
Duct tape like the type shown in this video literally cracks away after a time. There has to be another means of attaching the filter to the fan, like a frame of some sort.
Bungee cords worked well for me.
J channels
You can, of course build a frame for it and several RUclipsrs have shown how.
There is a real version of this for sale on Amazon.
Will it remove VOC?
No, an air filter by itself will only remove particles, not VOC. However you can buy charcoal filter material and tape it to the furnace filter, and the charcoal will remove chemicals from the air that a simple filter won't. My next video will cover that.
Great idea. Poorly executed. This works better with the filter on the back. Plus the suction holds it on, no tape required. Put it on the back and save the tape.
If the plug is right on the back, it's not a flat surface for the filter to attach.
Press F to pay respects for Molekule
F
F
thanku sir
In Vancouver WA, I actually had to have my parents ship me some filters from New Mexico because they are sold out everywhere here. Question, should I run this at a specific speed? I currently have it running on the highest level. I feel some air pushing from the front but more air pushing out the back.
Welcome to Washington and hope that you like living there Go check out Seattle(akaThe Emerald City cause of the green grass by us who were either born/live there ) sometime once this massive heat wave leaves and temperatures are going down again
Hi Washington! 🙋🏼♀️
Hope my birth state gets some rain soon from the massive heat wave out there
Would it be good for collecting pet hair and dust?
Yes, they work very well for that. You can even use a cheaper Merv 5 filter for about $5 for large particles like dust. You only need the more expensive filters for tiny particles like smoke or viruses.
Hey guys can this help people in a pinch with the new virus scare going on? Id like to make this for my grandparents
mrcalderon93 nope
Air purifier manufacturers hate this trick
Elon Musshhhh!!!!!!
What if my fan is a bit wider than the filter itself? Is it matters ?
Design wise it might be best if your filter is bigger than the fan. If the fan is bigger then air will flow around the filter into the fan instead of going through the filter into the fan. Air flow will try to take the path of least resistance. If your fan is wide than the filter you might need to use some cardboard to cover the open part of the fan so that air can't go around the filter.
JUst cant' tell which way to point the thing and which side?
i use plain scotch tape and the filters have arrows ... Been using mine for over a year now.. I smoke so I change the filter every 2 weeks.. believe me this really works.
Well this is easy enough I feel ridiculous for looking at homemade air for purifiers ...... Common Sense goes a long way
It sometime pays to do your research😁
Do you put the filter in front or back of the fan?
Did you find out ?
@@andreilyas1426 the front, you wanna push the air, the box fan doesn't have enough cfm to pull the air through the filter.
@@shadowdemon7770 I see, I have bee doing it wrong, no wonder it has not been working for me. Thank you very much
It doesn’t matter. I’ve been doing this for over three years. I put the filter behind. Works great.
@@shadowdemon7770 mine does
You should design and patent Your Own design
I used mine in my bedroom, I need the white noise anyways and cleaner air while my wife and I sleep
Poor man's laminar flow hood... Should work great for mushroom cultivation. You can filter out foreign spores while you are inoculating mushroom substrate with domesticated spores.
Doesn’t allow air to come through
How to make an air filter -
1. Buy an air filter.
Goodbye Dyson lol
in 50 minutes， they perform the same
lmao this looks like it's mounted the wrong way. the visible mesh screen within the filter normally normally is the side that should be facing the motor.
Normally, but these box fans don’t have the pressure of an HVAC system.
What about VOCs?
Did you test air quality with monitors elsewhere in the room or just on the fan?
Seems your numbers are a bit misleading
Need an active coal filter for VOCs, which not even all commercial air purifiers have.
@@ChlorideCull any decent one (e.g. Philips) does. Wirecutter seems to completely ignore this massive brand, despite it being the most highly rated on the market, and features in which.co.uk (the superior UK version of wirecutter) as top-rated picks the last 3 years running. Wirecutter is really losing all credibility
Where do I buy the filters?
And Home Depot / Lowe's / national hardware chain will sell them. And in these times, Home Depot at least has curbside delivery where you can order and pay online, pull up to their curbside delivery with the confirmation code, and they'll bring it out to you while you wait in your car. Good luck!
So the DIY air purifier is much better than Molekule? You can always get a hepa filter with 13 merv rating for just $20 and the fan for $10, so with $30 you get a better air purifier than Molekule. Damn bro I knew Molekule sucks.
A 1 inch furnace filter doesn't purify air. It's literally only meant to keep a minor amount of dirt and dust out of the furnace to keep it running longer/better. Also putting a 1 inch filter that is a a high Merv on your furnace is really bad for your furnace. It restricts too much air. Those 3m ones they sell at big box stores that are 1 inch 13 Merv filters are furnace killers. Need a 4 inch filter to go that high Merv.
My furnace tech told me to always use the really cheap nylon ones if you want the best performance from my new furnace. If I wanted a pleated on to get the cheapest one possible.
Yeah no. Let me tell you, cheap ones may move more air, and the more expensive ones move less, but I used cheap ones for years, and my A/C condenser cools clogged up with dust bunnies and I was forced to cut open duct work to access the inside coils to clean them. I wish I could show you pictures. There's a trade off, cheap gets you more air but will likely clog your coils, expensive ones move less air but keep the coils nice and clean.
Wow all I need is a giant fuckin fan and a filter. Never could have figured that part out
Who's here from the Canada shit
THE FILTER GOES ON THE INTAKE SIDE YOU DINGUSES
Jay Kropotkin 😂
The power cord is in the way and this isn’t a permanent solution, attaching it the way he describes is best to clean out a room
You have a point, but then I thought about it again and really either side would filter, sucking air trough the filter or pushing out through the filter (although I still think intake side would be better!)
So what molkule about
Extracting $, not pollution, evidently.
Nonsense, box fans don't have enough static pressure or airflow, and 1" pleated filters don't typically work well at small particle size. This is like trying to DIY sunscreen or sunglasses, but not actually achieving any measurable UV protection.
the air flow is cut when using a low static pressure fan, its not zero, number of pleats depends on how much you pay, again the purifiers you pay for also use pleated filters, just smaller or round. That being said you aren't saving much over a dedicated solution once you factor in the cost of a merv13.
nothing DIY here, more like go and buy, them put them together :/ waste of time
Molekule = $Garbage$ 🤣
Duct Tape
no directions on how to make the damn thing, just talk??
its self explanatory