Build a do-it-yourself home air purifier for about $25
uofmhealth.org
Build a do-it-yourself home air purifier for about $25
1–10 of 355 posts
Re: Build a do-it-yourself home air purifier for about $25
#2Is there an advantage to attaching the filter to the front of the fan so air is blown through it (as shown in the video) versus taping it to the back of the fan so air is sucked through it? Just curious if that would make any difference. It might be easier to get the filter to stay if it's getting sucked to the fan.
Re: Build a do-it-yourself home air purifier for about $25
#3I've been luring the Dyson hot and cool air purifiers, it's pretty silent from what I've heard, it also serves as both an electrical heater during the winter and a cooler during the summer. The price tag is the reason I've never bought one...
Re: Build a do-it-yourself home air purifier for about $25
#4Is there an advantage to attaching the filter to the front of the fan so air is blown through it (as shown in the video) versus taping it to the back of the fan so air is sucked through it? Just curious if that would make any difference. It might be easier to get the filter to stay if it's getting sucked to the fan.
Not sure, but I'd think it would also help to keep your fan clean.
Re: Build a do-it-yourself home air purifier for about $25
#5I've been luring the Dyson hot and cool air purifiers, it's pretty silent from what I've heard, it also serves as both an electrical heater during the winter and a cooler during the summer. The price tag is the reason I've never bought one...
> cooler during the summer
Where does the heat go?
Re: Build a do-it-yourself home air purifier for about $25
#6Is there an advantage to attaching the filter to the front of the fan so air is blown through it (as shown in the video) versus taping it to the back of the fan so air is sucked through it? Just curious if that would make any difference. It might be easier to get the filter to stay if it's getting sucked to the fan.
I would guess that it works similar to a water pump- pushing is always more powerful than sucking - but check this out for some detailed analysis (and more data on DIY air filters) https://smartairfilters.com/en/blog/where-should-an-air-filt...
Re: Build a do-it-yourself home air purifier for about $25
#7Is there an advantage to attaching the filter to the front of the fan so air is blown through it (as shown in the video) versus taping it to the back of the fan so air is sucked through it? Just curious if that would make any difference. It might be easier to get the filter to stay if it's getting sucked to the fan.
Placed in front it would catch particles coming off the motor like lubricant, bits of metal from bearings and carbon particles from the brushes if it's not a brushless motor.
Re: Build a do-it-yourself home air purifier for about $25
#8Is there an advantage to attaching the filter to the front of the fan so air is blown through it (as shown in the video) versus taping it to the back of the fan so air is sucked through it? Just curious if that would make any difference. It might be easier to get the filter to stay if it's getting sucked to the fan.
I think the answer is yes, but I'd also like to to know why.
Re: Build a do-it-yourself home air purifier for about $25
#9Is there an advantage to attaching the filter to the front of the fan so air is blown through it (as shown in the video) versus taping it to the back of the fan so air is sucked through it? Just curious if that would make any difference. It might be easier to get the filter to stay if it's getting sucked to the fan.
Not sure, but I'd think it would also help to keep your fan clean.
I’ve actually built this fan “mod” and when I change out the filter, I’m going to try attaching it to the back instead.
With the filter thoroughly taped to the front (nearly airtight), there’s a large amount of blowback. I suspect that this is reducing the overall efficiency of air filtration.
Re: Build a do-it-yourself home air purifier for about $25
#10Is there an advantage to attaching the filter to the front of the fan so air is blown through it (as shown in the video) versus taping it to the back of the fan so air is sucked through it? Just curious if that would make any difference. It might be easier to get the filter to stay if it's getting sucked to the fan.
Perhaps strain on the cheap box fan motor as it tries to pull its air through the filter. I've gone through a number of those style of cheap box fans over the years, any kind of long-term resistance very near the intake seems to cause the equally cheap motors harm and shorten their functioning life considerably. I haven't seen the same motor damage problem with resistance added to the exhaust side. In absence of that experience I would have guessed that similar resistance on either side would harm the junk motors all the same.