If you run larger filters, say 20x25, you get more surface area of filter which means more filter and less drag on the fan motor at a minimal increase in cost. Four 20x25x1 would equal five 20x20x1 in surface area.
Have a 2 floor 1800sqft home. With AQI getting up to 250 sometimes from the wildfire smoke coming into illinois/indiana, I want to make one of these for each floor and see how well they do, especially compliment by the 3M 2500 filter I have in the HVAC.
Excellent presentation. Concise. Very clear sequence, pronunciation, and video. If I would like to see one improvement it would be an explanation of how to layout and cut the hole for the control knob. Overall, this is an A+ presentation. -- THANKS! David Gerstel, Builder and Author of Nail Your Numbers, A Construction Pro's Path to Skilled Construction Estimating and Bidding
We have used the Corsi-rosenthal box for about 4 years now. We have a gas range , so we turn the Corsi box on whenever we use the range in the winter [can be brutally cold in Eastern Washington] when we cannot open windows and doors to ventilate. We also have a little 4" x 4" air quality monitor that sits on top of the box. It is amazing to watch the AQI drop when the fan is turned on. Of course it functions very well in smoke season too [we have been as high as 400 AQI, ugh] and, yes, one year is about correct for how long the filters function.
Very nice! Looks pretty easy to do, as well. This seems like the perfect year to try out something like this. Thanks, once again, for a great instructional video, Great Lakes!
@@GreatLakesPrepping No, not really, Great Lakes. Depends upon the direction the wind decides to blow, but so far we've been extremely lucky. I think we've had about one or two days where it was quite noticeable, but that's about it. The air has been clean and clear 95% of the time. My mom has asthma, however, and is bothered by pollens as well as when the smoke shows up, so that is why I want to give this DIY filtration system a try.
Here's a tip. I use this to keep my computer room/recording studio clean and dust free. Only change I make is to have the fan blowing into the box. Has completely eliminated dust on surfaces and dust in computers.
Ok have my 2 inch set up and it does have suction for tissue paper if they are small enough, so I guess i'll see if 2 inch is not efficient enough or if it even helps with my mold allergen issues at all. Paid extra for the airking fan also and it is thicker and supposedly has a better motor.
If it will hold a small piece of tissue paper, it will suck plenty of air. Air filters like this work constantly, over time, cycling the air in your house. I bet yours going to work great.
When dealing with mold or VOC's from mold or other stuff like paint or whatever it is, I know when I get the dehumidfyer in the room and clean there's less allergies, so it's mold but I am still skeptical it could be something else. Do you think a pleated merv 13 +plus carbon 2" thick filter would be overkill for a DIY? It's 68 bucks more or something at walmart but it's a 9 pack so I get one extra. I am building two of them.
Maybe a dumb question but is there a proper placement for it to be in? Like can it be in the corner of a room does it need to be centralized, i want to put some in my house cause i have 2 dogs that shed heavily where would you recommend putting it in the house
They say you can run this thing very frequently for basically a year. That could depend on how high you turn the fan speed. As far as noise, it's about the same amount of sound as just running a box fan (and again, higher speed will be slightly louder than lower speed).
i dont know if youll read this comment as im kinda late but i was reading reviews of the product on amazing and people were saying its merv 8 and false advertising, do you know if its actually merv 13 or not?
Everything I've read on it, including from the guys who created the concept, talk about Merv 13. I can't recall ever seeing "merv 8" in anything I've read on the topic.
Mine cost $165. Fan $33.99, 2200 13 Merv Filtrete $29.99@4 from the store. Might check online if I want to try this again. I'm using it b/c someone has covid-19 in the household-for purifying some of the air. I read using HEPA filters bumps up the price and purification/capture % of the unit.
what a shame. In the UK, merv 13 filters, box of 3 are like £50-60. I could just throw in £20-30 more and buy a air purifier unless the DIY one is vastly superior?
It's a very effective system. It's got a lot of filter surface and filtration power. However, you have to sort of destroy the whole thing to replace the filters after about a year. That's the main downside. This whole system came about during covid when buying commercially-made purifiers was nearly impossible. In any case, if you can find a highly-rated air purifier that's suited to the size of your home and it's a good price, that will probably be a perfectly good way to go.
From what I've read, the airflow is greatly reduced when doing it that way, because the filter is right up against the fan. And I'm sure there's something to be said for having 4 filters instead of just 1, with regards to how much it filters vs how much air it moves..
You can do it this way with 1 inch filters. But you'll get 3 months max before needing to change out. If you use 4 inch filters then you'll get closer to the 8-12 month lifespan. I'm doing it this way until I can afford some more filters.
My DIY air purifier obsession isn't hurting anyone.
3d handyman has vids that show using dowels to create legs, that makes the fifth filter on the bottom useful.
I think he said this version gets about 350 cfm.
The shroud is to prevent air just pulling from around the edges of the fan, instead of drawing it through the filters. Good job.
If you run larger filters, say 20x25, you get more surface area of filter which means more filter and less drag on the fan motor at a minimal increase in cost. Four 20x25x1 would equal five 20x20x1 in surface area.
Have a 2 floor 1800sqft home. With AQI getting up to 250 sometimes from the wildfire smoke coming into illinois/indiana, I want to make one of these for each floor and see how well they do, especially compliment by the 3M 2500 filter I have in the HVAC.
I have seen many but yours is the best, neat and very well explained about each part. 👍
Thank you, I appreciate it!
Excellent presentation. Concise. Very clear sequence, pronunciation, and video. If I would like to see one improvement it would be an explanation of how to layout and cut the hole for the control knob. Overall, this is an A+ presentation. -- THANKS! David Gerstel, Builder and Author of Nail Your Numbers, A Construction Pro's Path to Skilled Construction Estimating and Bidding
We have used the Corsi-rosenthal box for about 4 years now. We have a gas range , so we turn the Corsi box on whenever we use the range in the winter [can be brutally cold in Eastern Washington] when we cannot open windows and doors to ventilate. We also have a little 4" x 4" air quality monitor that sits on top of the box. It is amazing to watch the AQI drop when the fan is turned on. Of course it functions very well in smoke season too [we have been as high as 400 AQI, ugh] and, yes, one year is about correct for how long the filters function.
Thanks Rose. The air quality monitor thing is a great idea. I think I will do just that.
you made it plane and simple. great job!
Nice! I just made my first one with the help of your video (and one from Dr. Corsi himself). Thanks very much!
That's great, you're welcome Rob!
That's awesome, thank you so very much for sharing this 👍🙏
Great video, I'll be going to Lowes for the supplies on my way home. Hopefully, this will help with my sons asthma!
I've read somewhere about filters better that MERV 13 being used however it becomes more expansive.
Very nice! Looks pretty easy to do, as well. This seems like the perfect year to try out something like this. Thanks, once again, for a great instructional video, Great Lakes!
Thanks Joe. Are you affected at all by the wildfire smoke where you're at?
@@GreatLakesPrepping No, not really, Great Lakes. Depends upon the direction the wind decides to blow, but so far we've been extremely lucky. I think we've had about one or two days where it was quite noticeable, but that's about it. The air has been clean and clear 95% of the time. My mom has asthma, however, and is bothered by pollens as well as when the smoke shows up, so that is why I want to give this DIY filtration system a try.
Very impressive. This guy was good.
Thanks Victoria
Here's a tip. I use this to keep my computer room/recording studio clean and dust free. Only change I make is to have the fan blowing into the box. Has completely eliminated dust on surfaces and dust in computers.
That is my next project thanks
Nice! Here's my project for the day. Thanks dude 👍
Great video, thank you.
Ok have my 2 inch set up and it does have suction for tissue paper if they are small enough, so I guess i'll see if 2 inch is not efficient enough or if it even helps with my mold allergen issues at all. Paid extra for the airking fan also and it is thicker and supposedly has a better motor.
If it will hold a small piece of tissue paper, it will suck plenty of air. Air filters like this work constantly, over time, cycling the air in your house. I bet yours going to work great.
Wow, great job!
When dealing with mold or VOC's from mold or other stuff like paint or whatever it is, I know when I get the dehumidfyer in the room and clean there's less allergies, so it's mold but I am still skeptical it could be something else. Do you think a pleated merv 13 +plus carbon 2" thick filter would be overkill for a DIY? It's 68 bucks more or something at walmart but it's a 9 pack so I get one extra. I am building two of them.
Great video
Maybe a dumb question but is there a proper placement for it to be in? Like can it be in the corner of a room does it need to be centralized, i want to put some in my house cause i have 2 dogs that shed heavily where would you recommend putting it in the house
In a corner works well, as long as it's a foot or so away from the walls.
Thank you for getting back! I appreciate it.@@GreatLakesPrepping
What’s square footage does it cover
Very clever.
Thinking of making this but worried too loud for my living room I'm suffering very badly with allergies. How long do the filters last for?
They say you can run this thing very frequently for basically a year. That could depend on how high you turn the fan speed. As far as noise, it's about the same amount of sound as just running a box fan (and again, higher speed will be slightly louder than lower speed).
Would it be a pain to replace the filters?
Kind of. My plan will be to just separate all the seams with a razor blade, and then re-build it with new filters and new tape.
i dont know if youll read this comment as im kinda late but i was reading reviews of the product on amazing and people were saying its merv 8 and false advertising, do you know if its actually merv 13 or not?
Everything I've read on it, including from the guys who created the concept, talk about Merv 13. I can't recall ever seeing "merv 8" in anything I've read on the topic.
Mine cost $165. Fan $33.99, 2200 13 Merv Filtrete $29.99@4 from the store. Might check online if I want to try this again. I'm using it b/c someone has covid-19 in the household-for purifying some of the air. I read using HEPA filters bumps up the price and purification/capture % of the unit.
Yeah
shouldn't the fan be pushing the air into the cube , you are not gonna have anough pressure to actually catch stuff like hair and dust ?
Nope, it definitely is meant to draw ambient air inward. It definitely sucks a good amount of air.
what a shame. In the UK, merv 13 filters, box of 3 are like £50-60. I could just throw in £20-30 more and buy a air purifier unless the DIY one is vastly superior?
It's a very effective system. It's got a lot of filter surface and filtration power. However, you have to sort of destroy the whole thing to replace the filters after about a year. That's the main downside. This whole system came about during covid when buying commercially-made purifiers was nearly impossible. In any case, if you can find a highly-rated air purifier that's suited to the size of your home and it's a good price, that will probably be a perfectly good way to go.
I have only a 200 Watt fan
One square of toilet paper is a good way to test air flow.
why not just tape one filter to the fan?
From what I've read, the airflow is greatly reduced when doing it that way, because the filter is right up against the fan. And I'm sure there's something to be said for having 4 filters instead of just 1, with regards to how much it filters vs how much air it moves..
You can do it this way with 1 inch filters. But you'll get 3 months max before needing to change out. If you use 4 inch filters then you'll get closer to the 8-12 month lifespan. I'm doing it this way until I can afford some more filters.
You did a great job on that looks good
Thanks!