Thanks Danny for doing this review. We've since removed the strip of tape along the edges of the side panels that were making the fit too tight. Sometimes there are inconsistencies with the parts and some will be tighter than others. If people find them too loose they can add a strip of tape themselves. A printed manual is in the works too, I can see how working off a video is pretty inconvenient.
Thank you for creating a great product and glad my feedback has been helpful. I'm excited try out lots of other Northbox System devices in future, thanks again for reaching out initially!
P14 Max fans would work well with a speed controller. Giving you the option of a high speed mode when you want it, but remaining quiet otherwise. I love these fans for PC building, but they need be reduced to not be obnoxious.
The only good 140 mm Noctua fan is the soon-to-be-released NF-A14x25 G2 PWM. It is leagues above other fans not only in terms of noise-to-airflow ratio, but also in terms of price. Other models from them are very outdated designs that can't even compete with the much lower-priced Arctic P14. If you wanna try other cheap-ish 140 mm fans, you can try Endorfy Stratus/Fluctus, BeQuiet! Pure Wings 3 (both normal or high-speed versions are good), and Cooler Master Mobius 140p. Whether you can power the fans with the power supply and/or the battery is easy to determine from the specs of the fan (often listed at the back of the fan as well). For example P14 Max is rated to draw 0.35A@12V - that's 4.2 watts per fan at max speed.
@@HouseFresh In the 140 realm, it's that NF-14x25 G2 fans that exist, but not in the typical square frame format (Noctua dragging their feet with releases as always). It's basically the slightly updated version of the fans you got for this video, slight performance and quality increase, as well as more tolerable sound profile (they don't just optimize for overall noise, as fans have basically become as good as they're going to get within the PC dimensions format) The best non-cheap 120mm fans are tied between the NF-A12x25, and the Phanteks T30 fans. The difference is, the Phanteks fans break PC fan convention by making them 30mm thick instead of the ubiquitous 25mm. For our applications (air filtration) there is no downside because we could have fans multiple times thicker than that without problems. So you get slightly better performance than the Noctua 120mm. Also the Phanteks has an on-board switch that you can toggle (which would be a HUGE benefit in air filters). There are three settings. Hybrid, Performance, and Advanced. The first limits the max RPM to 1200, the second to 2000, and the third option the limit goes all the way to 3000 RMP. Though to be perfectly honest, all PC DIY Air Filter kits are flawed, because they cut one of the biggest features I think these devices should have. And that's programmable voltage control, or RPM control of some kind. Noctua has a wonderful solution, but obviously the price starts to climb at this point. The NV-FH2 is a 8-channel fan HUB (NV-SPH1 also includes the power supply plug), paired with a NA-FC1 (a rotary encoder allowing granular voltage control). With that, you can basically use any PC fans, and control up to 8 fans at the same time with the twist of a knob to the exact tolerance of noise you want out of your fans. That would be the next step in my view for PC DIY Air Filter designs to follow, to give us direct control of fans and not just an on/off toggle between full-speed or off.
@@JayJayYUP On 140 mm fans: Square A14x25 G2 should be coming in 3 days. "Slightly updated" is underselling it though, it's a completely different fan redesigned from ground up. BeQuiet! Silent Wings Pro 4 (140) is another excellent fan. On 120 mm fans: Aside from your (excellent) recommendations of A12x25 and T30, other great fans include (approximately from most to least expensive) BeQuiet! Silent Wings Pro 4, Lian Li P28, Cooler Master Mobius 120, Gentle Typhoon, PCCooler CPS F5 R120, Arctic P12 series, Endorfy Fluctus 120. There are also great industrial fans (Sanyo Denki 9RA series, 140x38 mm and 120x38 mm) but they can be pretty difficult to get hold of. And even more expensive than Noctuas. And crazy high maximum power so prepare a high wattage DC power supply else you risk triggering over current protection. On speed control: You can simply add a PWM fan controller (e.g. NA-FC1, $24) between the DC power supply and the fans to retroactively add PWM control to existing kits (as long as they are using PWM fans to begin with). Fan hubs aren't really needed tbh.
@@MY-qi8wq Yeah you're right on the fan hub thing, just the PWM controller should be enough. Oh and the reason I undersold the next gen Noctua 140's, is because in PC cooling tests, there wasn't that much of a performance difference, even the noise wasn't all that great in terms of where they decided to shift the frequency where most of the sound was located. I actually haven't seen any videos on specifics comparing JUST the fans themselves (outside of PC applications and purely on airflow, static pressure, and frequency response plots). So it doesn't seem like anything crazy. I wish it were though, I'm still rocking the NH-D15 from 10 years ago, and I wish the new one was better after all this time As for industrial fans I haven't the faintest of clues on any of them. That stuff feels impossible to research and get any reliable non-first party data for. But also, I don't really care about them because they're all utterly not interested in any power or noise restrictions. Industrial fans (like anything industrial) is simply a curiosity to me to see what the state of the art might be for raw performance. But I otherwise see those devices as performance + unbeatable warranty devices (since that's all enterprise customers care about, they'll almost buy feces if they can get it from a trustworthy and dependable company that will pick up a phone when they call them). Most of them are riding on old, tested designs, and I rarely see anything worthy of note in terms of progress (which makes sense since businesses value stability above all else).
Thank you for making this video and also going out of your way to try out different brands and types of fans! It is definitely the most expensive part of these DIY PC Fan Air Purifiers, so I appreciate the deep dive into them more closely! As the other commenters have mentioned, I can report that the Noctua 140mm Industrial versions with the Noctua Fan Hub and PWM controller works very well in practice on a DIY PC Fan Kit, the Nukit Tempest... empirically that is! I don't have a frame of comparison or any way to measure any of this, which is why I love your nerdy Air Purifier videos! Regarding the PWM controls, I have my unit by my nightstand, so it's usually operating at very low noise levels, but having the option to turn it to go full blast when I am not in the room is definitely really great for my use case! I don't really know the best way to communicate how I use it, but, my unit consumes up to 28W (full blast),but I usually have it running at 5W if i don't want to hear it at all (and it's right beside me while I sleep...) I imagine it may be difficult to test performance and sound levels with a PWM controller though, since everyone's perception and tolerance of sound is a bit different! Perhaps having certain benchmarks of air purification performance and noise levels of a particular fan with the same DIY kit as the controller variable, would be a simpler comparison. Or maybe it's just best to go with what the manufacturer has suggested. xD
Thank you for indepth and insightful comment! I have bought a Noctua fan hub so I will be also able to adjust fan speed with the PWM controls. I will try to find the sweet spot in terms of sound I pick up from my sound meter at 3ft and air cleaning performance as I saw in another comment on here that I might be able to tweak the P14max fans to find a good sound level with still great air cleaning power. One unexpected thing I discovered with these DIY air purifiers is the world of PC fans. I never knew it went so deep, so much good stuff on here, have been looking into 3d printed shrouds that might improve performance...Likely not something most people will do but could be a fun video. Just to confirm are these the Noctua industrial PC fans you used: www.cclonline.com/nf-a14-ippc-2000-pwm-noctua-nf-a14-industrialppc-2000rpm-pwm-140mm-high-performance-fan/?gad_source=4
@@HouseFresh Yes, honestly it's quite overwhelming how deep the rabbit hole goes with PC fans...! Of course there's the reported static pressure, but also the noise levels and everything... I found videos on youtube on the subject as well but it was hard to distinguish a clear winner, even with the abudance and quality of third-party testing. The main reason I went with Noctua is their brand reputation for quietness, longevity, but also their UL listed fan hub and controller. But the non-redux versions of the Noctua fans, while they may be marginally better at a metric or two (when I looked at the data on the websites and third-party data collected from those videos), are exorbitantly expensive especially when we have to buy 5-7 of them for these DIY PC Fan Air Purifier kits... Perhaps that is the reason why the creators of those kits recommend cheaper fans! I hypothesize one would quickly conclude that there are sharp diminishing returns performance-wise, since all recommended fans seem to come very close to one another...! As a sidenote, it seemed that the IPPC line-up is in general slightly noisier compared to Noctua's non-industrial quiet PC fan line up in the graphs. In practice when I listened it to both, it seems that the IPPC motors while being more robust, have a more noticeable hum to them compared to Noctua's standard quiet line-up - something that I could only hear at low RPMs. I chose to go with Noctua's NF-A14 PWM IPPC 3000 RPM version rather than the 2000 RPM to have the flexibility to run it either quietly or at full blast! But I'm sure the 2000 RPM version would be pretty much the exact same. Doing the same with the Arctix P14 Max is certainly a video worth looking forward to, the price is right with these high RPM fans!! Perhaps this is a bit of an aside but, there may be a bottleneck somewhere in my setup btw, specifically with the official Noctua Fan Hub and PWM controller, or maybe even the USB cables or adapter I picked out. Running at 3000 RPM it should consume 6.6W / fan at max according to Noctua's data sheet on their website, but 28W / 6 fans would work out to 4.6 W or so per fan. Though I may be losing a bit of performance, I'm not sure if someone would want to run it at those speeds for very long...! And I wouldn't even know where to start to try to find an adapter or cables or whatever I'm missing to get it to run at the theoritical full 3000 RPM / 40 W total... Maybe someone more inclined electrically would be able to figure it out though! Regarding 3D printed shrouds... I am not exactly what shroud you mean exactly, but maybe it isn't the honeycomb ones used to straighten the airflow into laminar (I think I read somewhere they certainly function well as airflow straighteners but decrease performance a bit), but rather a shroud that actually increases airflow like the Noctua's Airflow Amplifier? I was looking into 3D Printing that model to be honest...! But printing 6 in total is quite steep. And I think the design mainly "squeezes" the air out from the output of the fan along with its shape to draw in surrounding air, increasing airflow, rather than doing anything on the input end which is where the air cleaning performance and static pressure metrics come in... probably. Also it would make the unit much larger and unweldy! I also entertained the idea of maybe like setting up a bracket INSIDE the DIY box so that the shroud could be hidden and tucked inside rather than jutting out, but it's too much work probably... and I'm pretty sure air purifiers want as much space and distance between the fan and the filter to build up a column of air pressure, hence the industry-disrupting performance numbers we saw from the CR box design... I think... it would increase air projection mostly and the volume of air output, but air projection may not matter so much for air purifiers except for massive rooms (where it wouldn't achieve 5 air changes/hour or 12ACH or anything either...) since the air quality levels in the room probably diffuse and equalize quickly... and the extra air would just be air that was outside the air purifier and not air that goes through the filter... anyways I think I stopped caring so much at this point... xD Thank you so much again for taking the time to make these videos and articles to share your experience and knowledge with others, and of course the forum to share experience and thoughts... like this xD
I learned so much from your videos, thank you! Now, as I'm extremely sensitive to noise, this is the most important factor for me. I guess using a 9V power supply instead of the 12V might reduce the fan noise significantly. So, do you have an idea how to get a device like this completely noise free, like in 20dB range or something like that? I mean, how would CADR be like when it is run in 9V or 6V mode? I have no issues with air quality and just reduce dust in my small bedroom. I've seen you test the Levoit Core 400S which has a noise level of 25dB at lowest fan speed. That's big difference to lets say the Levoit Vital 200S or any other Kit like Northbox or Luggable XL....
A good way to adjust the noise would be with a PWM speed controller as you will be able to set the device to run as low as you want it to. The 9V power supply would help but you will likely be better with a speed controller as you can adjust even more. The Levoit Core 400S data will be for the sleep mode and would have been based on the marketing information as the lowest I can test in this location is around 35.2 dBA (its quite loud in my house!) This is the reason why my low fan speed maxes out at this speed as I can't measure lower without a slient room. From my experience a PC fan device like this or Luggable Xl can be much quieter than even a HEPA retail on low speed as the fan sound seems to also be more stable but you would need a speed controller so you can set it lower than the default. I am planning to test how quite these devices can go using a speed controller soon but there is quite a lot of backlog of other videos to get through first.
Wow, the using the SickleFlow fans on the Clean Air Kits gave it an outstanding smoke CADR / dB ratio. 20 min at 38.8dB vs 19 min at 50.2 dB. Now I’m curious to go back and see if that was a MERV 14 filter or something in addition to having a 7th fan that made it able to less than half as noisy for only 1 min slower.
I think the larger filter size also helps but the sound to performance with this device was impressive. They don’t sell the xxl internationally but I’m sure that might be even better as even more fans !
@@HouseFreshYeah, I bet you’re right. 2 20”x25” would be 200^2 inches if the filter was flat. However, because it has so many pleats, it’s actually much more additional surface area, reducing static pressure by a lot. The 5 fan Luggable with a 16”x25” filter might be more comparable to this NorthBox. Seems like the Clean Air Kit guys really did a lot of iterations, testing and tinkering to optimize for max CADR/dB. That’s cool
It’s very similar to the clean air kits devices just with some minor differences. This was easier than the nukit tempest to put together as it had flexible material and simpler power cable system. Feels as solid as clean air kits but certainly not as durable as the Nukit Tempest.
Thanks Danny for doing this review. We've since removed the strip of tape along the edges of the side panels that were making the fit too tight. Sometimes there are inconsistencies with the parts and some will be tighter than others. If people find them too loose they can add a strip of tape themselves. A printed manual is in the works too, I can see how working off a video is pretty inconvenient.
Thank you for creating a great product and glad my feedback has been helpful. I'm excited try out lots of other Northbox System devices in future, thanks again for reaching out initially!
P14 Max fans would work well with a speed controller. Giving you the option of a high speed mode when you want it, but remaining quiet otherwise. I love these fans for PC building, but they need be reduced to not be obnoxious.
Will tests again with a speed controller 👍
@@HouseFreshYou rock!
The only good 140 mm Noctua fan is the soon-to-be-released NF-A14x25 G2 PWM. It is leagues above other fans not only in terms of noise-to-airflow ratio, but also in terms of price. Other models from them are very outdated designs that can't even compete with the much lower-priced Arctic P14.
If you wanna try other cheap-ish 140 mm fans, you can try Endorfy Stratus/Fluctus, BeQuiet! Pure Wings 3 (both normal or high-speed versions are good), and Cooler Master Mobius 140p.
Whether you can power the fans with the power supply and/or the battery is easy to determine from the specs of the fan (often listed at the back of the fan as well). For example P14 Max is rated to draw 0.35A@12V - that's 4.2 watts per fan at max speed.
Thanks for the recommendations will test them in future video. What’s the best non cheap fan to try ?
@@HouseFresh In the 140 realm, it's that NF-14x25 G2 fans that exist, but not in the typical square frame format (Noctua dragging their feet with releases as always). It's basically the slightly updated version of the fans you got for this video, slight performance and quality increase, as well as more tolerable sound profile (they don't just optimize for overall noise, as fans have basically become as good as they're going to get within the PC dimensions format)
The best non-cheap 120mm fans are tied between the NF-A12x25, and the Phanteks T30 fans. The difference is, the Phanteks fans break PC fan convention by making them 30mm thick instead of the ubiquitous 25mm. For our applications (air filtration) there is no downside because we could have fans multiple times thicker than that without problems. So you get slightly better performance than the Noctua 120mm. Also the Phanteks has an on-board switch that you can toggle (which would be a HUGE benefit in air filters). There are three settings. Hybrid, Performance, and Advanced. The first limits the max RPM to 1200, the second to 2000, and the third option the limit goes all the way to 3000 RMP.
Though to be perfectly honest, all PC DIY Air Filter kits are flawed, because they cut one of the biggest features I think these devices should have. And that's programmable voltage control, or RPM control of some kind. Noctua has a wonderful solution, but obviously the price starts to climb at this point. The NV-FH2 is a 8-channel fan HUB (NV-SPH1 also includes the power supply plug), paired with a NA-FC1 (a rotary encoder allowing granular voltage control). With that, you can basically use any PC fans, and control up to 8 fans at the same time with the twist of a knob to the exact tolerance of noise you want out of your fans.
That would be the next step in my view for PC DIY Air Filter designs to follow, to give us direct control of fans and not just an on/off toggle between full-speed or off.
@@JayJayYUP
On 140 mm fans:
Square A14x25 G2 should be coming in 3 days. "Slightly updated" is underselling it though, it's a completely different fan redesigned from ground up.
BeQuiet! Silent Wings Pro 4 (140) is another excellent fan.
On 120 mm fans:
Aside from your (excellent) recommendations of A12x25 and T30, other great fans include (approximately from most to least expensive) BeQuiet! Silent Wings Pro 4, Lian Li P28, Cooler Master Mobius 120, Gentle Typhoon, PCCooler CPS F5 R120, Arctic P12 series, Endorfy Fluctus 120.
There are also great industrial fans (Sanyo Denki 9RA series, 140x38 mm and 120x38 mm) but they can be pretty difficult to get hold of. And even more expensive than Noctuas. And crazy high maximum power so prepare a high wattage DC power supply else you risk triggering over current protection.
On speed control:
You can simply add a PWM fan controller (e.g. NA-FC1, $24) between the DC power supply and the fans to retroactively add PWM control to existing kits (as long as they are using PWM fans to begin with). Fan hubs aren't really needed tbh.
@@MY-qi8wq Yeah you're right on the fan hub thing, just the PWM controller should be enough. Oh and the reason I undersold the next gen Noctua 140's, is because in PC cooling tests, there wasn't that much of a performance difference, even the noise wasn't all that great in terms of where they decided to shift the frequency where most of the sound was located. I actually haven't seen any videos on specifics comparing JUST the fans themselves (outside of PC applications and purely on airflow, static pressure, and frequency response plots). So it doesn't seem like anything crazy. I wish it were though, I'm still rocking the NH-D15 from 10 years ago, and I wish the new one was better after all this time
As for industrial fans I haven't the faintest of clues on any of them. That stuff feels impossible to research and get any reliable non-first party data for. But also, I don't really care about them because they're all utterly not interested in any power or noise restrictions. Industrial fans (like anything industrial) is simply a curiosity to me to see what the state of the art might be for raw performance. But I otherwise see those devices as performance + unbeatable warranty devices (since that's all enterprise customers care about, they'll almost buy feces if they can get it from a trustworthy and dependable company that will pick up a phone when they call them). Most of them are riding on old, tested designs, and I rarely see anything worthy of note in terms of progress (which makes sense since businesses value stability above all else).
@@NickWindham Very good to hear it works so well.
Thank you for making this video and also going out of your way to try out different brands and types of fans! It is definitely the most expensive part of these DIY PC Fan Air Purifiers, so I appreciate the deep dive into them more closely! As the other commenters have mentioned, I can report that the Noctua 140mm Industrial versions with the Noctua Fan Hub and PWM controller works very well in practice on a DIY PC Fan Kit, the Nukit Tempest... empirically that is! I don't have a frame of comparison or any way to measure any of this, which is why I love your nerdy Air Purifier videos!
Regarding the PWM controls, I have my unit by my nightstand, so it's usually operating at very low noise levels, but having the option to turn it to go full blast when I am not in the room is definitely really great for my use case! I don't really know the best way to communicate how I use it, but, my unit consumes up to 28W (full blast),but I usually have it running at 5W if i don't want to hear it at all (and it's right beside me while I sleep...)
I imagine it may be difficult to test performance and sound levels with a PWM controller though, since everyone's perception and tolerance of sound is a bit different! Perhaps having certain benchmarks of air purification performance and noise levels of a particular fan with the same DIY kit as the controller variable, would be a simpler comparison. Or maybe it's just best to go with what the manufacturer has suggested. xD
Thank you for indepth and insightful comment! I have bought a Noctua fan hub so I will be also able to adjust fan speed with the PWM controls. I will try to find the sweet spot in terms of sound I pick up from my sound meter at 3ft and air cleaning performance as I saw in another comment on here that I might be able to tweak the P14max fans to find a good sound level with still great air cleaning power.
One unexpected thing I discovered with these DIY air purifiers is the world of PC fans. I never knew it went so deep, so much good stuff on here, have been looking into 3d printed shrouds that might improve performance...Likely not something most people will do but could be a fun video.
Just to confirm are these the Noctua industrial PC fans you used: www.cclonline.com/nf-a14-ippc-2000-pwm-noctua-nf-a14-industrialppc-2000rpm-pwm-140mm-high-performance-fan/?gad_source=4
@@HouseFresh
Yes, honestly it's quite overwhelming how deep the rabbit hole goes with PC fans...! Of course there's the reported static pressure, but also the noise levels and everything... I found videos on youtube on the subject as well but it was hard to distinguish a clear winner, even with the abudance and quality of third-party testing. The main reason I went with Noctua is their brand reputation for quietness, longevity, but also their UL listed fan hub and controller.
But the non-redux versions of the Noctua fans, while they may be marginally better at a metric or two (when I looked at the data on the websites and third-party data collected from those videos), are exorbitantly expensive especially when we have to buy 5-7 of them for these DIY PC Fan Air Purifier kits... Perhaps that is the reason why the creators of those kits recommend cheaper fans! I hypothesize one would quickly conclude that there are sharp diminishing returns performance-wise, since all recommended fans seem to come very close to one another...! As a sidenote, it seemed that the IPPC line-up is in general slightly noisier compared to Noctua's non-industrial quiet PC fan line up in the graphs. In practice when I listened it to both, it seems that the IPPC motors while being more robust, have a more noticeable hum to them compared to Noctua's standard quiet line-up - something that I could only hear at low RPMs.
I chose to go with Noctua's NF-A14 PWM IPPC 3000 RPM version rather than the 2000 RPM to have the flexibility to run it either quietly or at full blast! But I'm sure the 2000 RPM version would be pretty much the exact same. Doing the same with the Arctix P14 Max is certainly a video worth looking forward to, the price is right with these high RPM fans!!
Perhaps this is a bit of an aside but, there may be a bottleneck somewhere in my setup btw, specifically with the official Noctua Fan Hub and PWM controller, or maybe even the USB cables or adapter I picked out. Running at 3000 RPM it should consume 6.6W / fan at max according to Noctua's data sheet on their website, but 28W / 6 fans would work out to 4.6 W or so per fan. Though I may be losing a bit of performance, I'm not sure if someone would want to run it at those speeds for very long...! And I wouldn't even know where to start to try to find an adapter or cables or whatever I'm missing to get it to run at the theoritical full 3000 RPM / 40 W total... Maybe someone more inclined electrically would be able to figure it out though!
Regarding 3D printed shrouds... I am not exactly what shroud you mean exactly, but maybe it isn't the honeycomb ones used to straighten the airflow into laminar (I think I read somewhere they certainly function well as airflow straighteners but decrease performance a bit), but rather a shroud that actually increases airflow like the Noctua's Airflow Amplifier? I was looking into 3D Printing that model to be honest...! But printing 6 in total is quite steep. And I think the design mainly "squeezes" the air out from the output of the fan along with its shape to draw in surrounding air, increasing airflow, rather than doing anything on the input end which is where the air cleaning performance and static pressure metrics come in... probably. Also it would make the unit much larger and unweldy! I also entertained the idea of maybe like setting up a bracket INSIDE the DIY box so that the shroud could be hidden and tucked inside rather than jutting out, but it's too much work probably... and I'm pretty sure air purifiers want as much space and distance between the fan and the filter to build up a column of air pressure, hence the industry-disrupting performance numbers we saw from the CR box design... I think... it would increase air projection mostly and the volume of air output, but air projection may not matter so much for air purifiers except for massive rooms (where it wouldn't achieve 5 air changes/hour or 12ACH or anything either...) since the air quality levels in the room probably diffuse and equalize quickly... and the extra air would just be air that was outside the air purifier and not air that goes through the filter... anyways I think I stopped caring so much at this point... xD
Thank you so much again for taking the time to make these videos and articles to share your experience and knowledge with others, and of course the forum to share experience and thoughts... like this xD
Great review. I'm teetering between the Northbox 5X and the Nukit Tempest.
Thanks, hope you are happy with the device you end up with. Both are great!
@@HouseFresh Thank you for your channel. Subbed.
@@nickhtk6285 Far too kind, hope I can meet your expectations!
I learned so much from your videos, thank you! Now, as I'm extremely sensitive to noise, this is the most important factor for me. I guess using a 9V power supply instead of the 12V might reduce the fan noise significantly. So, do you have an idea how to get a device like this completely noise free, like in 20dB range or something like that? I mean, how would CADR be like when it is run in 9V or 6V mode? I have no issues with air quality and just reduce dust in my small bedroom. I've seen you test the Levoit Core 400S which has a noise level of 25dB at lowest fan speed. That's big difference to lets say the Levoit Vital 200S or any other Kit like Northbox or Luggable XL....
A good way to adjust the noise would be with a PWM speed controller as you will be able to set the device to run as low as you want it to. The 9V power supply would help but you will likely be better with a speed controller as you can adjust even more.
The Levoit Core 400S data will be for the sleep mode and would have been based on the marketing information as the lowest I can test in this location is around 35.2 dBA (its quite loud in my house!) This is the reason why my low fan speed maxes out at this speed as I can't measure lower without a slient room.
From my experience a PC fan device like this or Luggable Xl can be much quieter than even a HEPA retail on low speed as the fan sound seems to also be more stable but you would need a speed controller so you can set it lower than the default.
I am planning to test how quite these devices can go using a speed controller soon but there is quite a lot of backlog of other videos to get through first.
@@HouseFresh Thank you so much for your help, really appreciated :)
Wow, the using the SickleFlow fans on the Clean Air Kits gave it an outstanding smoke CADR / dB ratio. 20 min at 38.8dB vs 19 min at 50.2 dB. Now I’m curious to go back and see if that was a MERV 14 filter or something in addition to having a 7th fan that made it able to less than half as noisy for only 1 min slower.
I think the larger filter size also helps but the sound to performance with this device was impressive. They don’t sell the xxl internationally but I’m sure that might be even better as even more fans !
@@HouseFreshYeah, I bet you’re right. 2 20”x25” would be 200^2 inches if the filter was flat. However, because it has so many pleats, it’s actually much more additional surface area, reducing static pressure by a lot. The 5 fan Luggable with a 16”x25” filter might be more comparable to this NorthBox.
Seems like the Clean Air Kit guys really did a lot of iterations, testing and tinkering to optimize for max CADR/dB. That’s cool
Do you think you’ll review the Airthings Renew air purifier?
I'm hoping to, got a few devices to work through first but hope to do it before end of the year.
Have you reviewed any of the Starkvind filters?
Got some on order will test them soon. Have you used that air purifier?
Thanks!!! What about the best for Australia.
Good question, I would expect the shopping to be very high for Canada or US. I will see if there are any kit providers in the Asia or Auz.
AirFanta has shipped some 3Pro to Amazon AU, should be there in a few weeks.
I think you wanted to use the P14 PWM (not Max) fans.
Yes they were the recommended fans but I wanted to try the max version .
Compared to a Nukit tempest this one looks more of a DIY project.
It’s very similar to the clean air kits devices just with some minor differences. This was easier than the nukit tempest to put together as it had flexible material and simpler power cable system.
Feels as solid as clean air kits but certainly not as durable as the Nukit Tempest.
Is it really pronounced "Nock tuah"? :)
😂