Hey Andrewdude302 -- well, it could be an ad! :) I certainly wax lyrical about the Hyper Fan but I genuinely love it. I still haven't gotten around to trying the Max Fan Pro line which I hear kicks ass too -- but I'm loving the CFMs / watt on the Hyper Fan. If you know of a more efficient inline fan let me know and I'll try and get it on a vid. Peace.
Can you use this fan to suck air as well? I am trying to vent our island range using a downdraft vent, but have limited room to run venting in floor joist. If I put this in-line with venting in the floor boards, will it provide strong downdraft were range vent comes out?
+chukobuko Hi Chukobuko. Yes, you can use this fan to suck or blow and it's very powerful. I love the speed controller (included) so you can reduce power if it's a little too strong.
Arizno3000 Thanks Arizno-I appreciate anybody taking the time to watch my vids but I especially appreciate any feedback. I feel the interaction is just as important as the upload-if not more so-as I often learn a great deal from viewers' insights. Please consider subbing my channel if you care for regular updates on what I'm up to-but, in any case, thanks for stopping by! :)
The "test" is entertaining, but meaningless. What you're really testing here is at what point whichever fan will stall. Pressure against any fan in the wrong way makes them fail and every fan will do it at a different point. The whole scenario you've created is complicated further by the speed at which each fan turns on and ramps up to full speed.
hi Everest what fan design is the quietest? axial, or centrifugal? i know size and quality plays a large part, but lets say you have one of each with similar cfm from the same manufacturer.what would be more quieter?
Thanks for your question Xanode, it's a tricky one though :) First, let's identify some of the major culprits of "fan noise". 1. Bearing noise - i.e. noise from "out of centre" or failed bearings - housing vibration, loose blades , speed control rotor hum. 2. Wind noise - the US standard for HVAC recommends less than 9 meters per second - that's about 30 km/h ! Whereas I recommend no more than six meters per second or about 20 km/h for a quiet grow. High velocities cause high turbulence, duct noise and outlet noise. Duct size plays a huge part - increase the duct size, decrease the air velocity, decrease the noise - e.g. use 10 " duct on a 6" fan (using reducers) for maximum quietude! Where else does the air noise come from ? - All things being equal - cavitation - that's when we sharply change the direction of high velocity air. Looking at a centrifugal fan the airflow path changes sharply 90 degrees immediately after entering the inlet, passing through the vanes and another sharp 90 degrees another 45 and the last 45 degrees into the duct - in all an angular change of 270 degrees - plenty of possibilities for cavitation and turbulence - whereas in the case of an axial fan the air moves over the blades and straight through the fan housing - so no more than say 65 degrees. Why then use centrifugal ? Old manufacturing technology, simple to make, easy to balance, cheaper to purchase, but it uses up to SIX times the electricity of an axial fan (e.g. Hyperfan) for the same airflow. So why did centrifugal fans dominate the market for so long? Axial fans historically have low pressure - no good for pulling air through carbon filters and then sending the air down ducts over a few feet. And to get high enough pressures meant using really high rpm and lots of closely spaced blades - technically difficult and cost prohibitive for most indoor growers. What's unique (as far as I know) about the Hyper Fan is that it uses laminar flow blades - no cavitation - oversize bearings - low bearing noise and three-phase electronic control of speed - no rotor hum during speed control. Also stators placed after rotating blades add pressure to the airstream - meaning the pressure is high enough to pull through a carbon air filter and push through a long duct. If you only need low speed , low airflow, low pressure - then centrifugal is fine - but electrically inefficient If you require high speed, high airflow, high pressure (like most indoor growers) then axial / mixed flow will always win for noise, power consumption, price and reliability. Hope that clarifies matters! Peace and happy growing, Everest.
While not contradicting electrical efficiency claims, I wouldn't say this actually confirms the CFM flow rating of either fan as superior. This test has nothing to do with CFM flow in a way. It's actually a test proving static pressure. So... Pulling static air isn't a tug or war scenario unless dealing with large amounts of static pressure induced via inefficient ducting. 99% of people hook these things up wrong. The fan should be as close to the outlet port as possible, not at the entrance of the ducting. If you really want to prove CFM ratings you'll have to do another test with non restrictive methods. I'd like to see that test confirming this data with a standalone open air flow readout. I have a feeling it wouldn't be as far separated as one might imagine. What this ultimately proves is this is a great fan for sealed compartments over the Max-Fan. IE. This might be the best solution out there for a Laser machine smoke extraction exhaust, in which that is the very thing you're dealing with.
Would this 8" hyper fan keep my tent cool enough it's 240x 240x 200m and I have 4 600w hps lights also have inline fan 290cfm also I live in the uk so summer does get hotter or would I need 10" as it would also run on a lower setting then 8" but will suck out more air aswel also if I got 10" would inline fan with 490cfm be okay thanks.
Hey everest! your newest sub here. Awesome channel.. never really come across one like this. great quality filming ect. I cant wait for your next vid on how to take a ten inch down to two 6" or whatever it is you said :) if you have the time, id love your opinion on whether i should stick with two 6" phresh filters (the 6x24 ones) on 435 cfm fans OR should i upgrade to say a ten inch fan with a bigger phresh filter? i love the hyper 6 inche fans.. so i would def be upgrading to a 10" hyper/phresh combo, but want you honest opinion. im in a 10x10 sealed area
northCALIFA Hey NorthCalifa! Well firstly, THANKS for subbing the channel. That's a big slice of Awesome Cake on my breakfast plate. Thank you my friend. :) It's no secret that I'm a big fan of the Hyperfans too. When you have these puppies running 24 / 7 you don't want to be using any more watts than necessary-and these are the most efficient fans I know of in the industry to date. The included speed-controller is a real bonus too as I prefer to over-spec my fans and give myself wriggle-room and some future-proofing when it comes to inevitable upgrades and expansions. :) On to your 10 x 10 sealed area: Well, as your area is sealed I presume you are using your fan + filter combos for air-scrubbing within your garden, rather than air exchange / ventilation. I'd still recommend scrubbing your garden's volume of air once every minute though-it can't do any harm, especially as you mentioned odor issues. So-2 x 6" vs. 1 x 10"? Well-there are pros and cons to both! Obviously having two scrubbers rather than one means you mitigate the risk of one fan failing-whereas a single 10" fan / filter combo is also a single point of [potential] failure. I have to say though, that I don't know of any growers that have experienced any reliability issues with the Hyperfans-they seem to be very well built and super robust. On the other hand, a 10" Hyperfan + 1400 CFM Phresh Filter is only going to cost you around $478 if you buy them as a set-whereas 2 x 6" fan + filters will cost around $550. (Yes, you've already invested in the 6" fan + filters but they will need replacing at some point further down the line-so do you want to be replacing / servicing two sets of fans and filters of just one?) What about your existing 435 CFM fans? Are they efficient? Is it time for an upgrade or are they fairly new? Also-what are you using to dump your grow room's air at the end of the day cycle?
thanks for the great reply Everest. i guess its not a totally sealed room... .it a bedroom. i have a portable ac...with the hot air being ducted throught cieling in closet. the 4 1k lights are all being cooled with a 435cfm that pullls frm the attic and runs through the lights and back up through ANOTHER hole into attic.... then i have my carbon scrubber on another 435 being exhausted through yet another 6 inch hole to attic. im getting crazy smells outside during wk 6-9. SO yes i do think that at least one of my cheap ebay fans is not running as strong. i think my hurricane is doing ok.... but yes.. i will be either buying 2 NEW 6 x 24" phresh filters and (replacing the one AND adding another) or the single 10 inch. sorry... i guess im not completely sealed. i do give bottled co2. will be taking down this room in 2 days.. so ill be redesigning the lungs of the room. THANKS SO MUCH FOR THE HELP BROSKI. have a great day
northCALIFA Okay-so I'm guessing your 6" 435 cfm fan's ducting is Y'd into two and you're cooling your 4 x 1000W reflectors as two rows of two lights (i.e. two in series) - consolidating the two exits back into a single 6" duct and up it goes through the attic. Meanwhile, you are using a single 6" 435 CFM fan to exhaust your room's air. I would do the following: 1) Buy the 10" Hyperfan + 10" x 39" Phresh Filter. Use THIS as your room's main ventilation. Widen your existing exhaust hole from 6" to 10" rather than using reducers. 2) Use you 6 x24" existing Phresh filter connected to your 435 CFM fan to scrub the air (I'm assuming the 6" Phresh filter is less than two years' old) If you doubt the efficacy of your existing fans, replace with new / better. 3) Check all seals in and out of your grow room-make sure that where ducting comes either in or out, it does so via a duct collar and coupler (as I show in my vids) leaving no air gaps for unfiltered air to squeeze through. Peace and happy growing, Everest.
will be spending my morning watching more vids from you. I wish i could take a pic and show you.... basically i took a large rectangle square of sheetrock out of the ceiling of the small closet in the spare br....i then took a peice of 1/4" plywood and cut a larger hole to cover the drywall hole in ceiling.... this piece of wood has FOUR 6 inch ducts. 2 on one side pulling attic air thru the lights and exhausting through the second hole... 3rd hole is for my single hose hot air exhaust coming out of portable ac..... and fourth hole is for my now SINGLE 6 inch phresh filter. i hope you can visualize the top of my closet with a piece of plywood covering a whole.... which in turn the plywood has 4 six inch ducting holes in it. . my fans are right about 2 yrs now. i may have to upgrade to the bigger fan/filter combo... just not looking forward to the price... but like you said... 2 6 inches with new filters is not cheap either :). thanks buddy!
Sup Everest, i thought you may be one of the best people to ask about these hyper-fans. I picked up 2 6inch hyper fans new, and both, out of the box new, make a very very high pitched frequency, it really is hard to hear, and also can depend on what angle the fan is facing you, it doesn't matter what speed the fans are running at also, as soon as power is applied the noise starts. I have heard this sound on other brushless, digital type motors and speed controls in drones and it is normal for them. If you happen to have a 6-inch hyper around, if you could possibly take a very close listen to the fan on its lowest speed, that would be massively appreciated. Or maybe you've heard about this before with the hyper fans? Thanks.
Xanode I know, old Post. I've had a 6" hyper fan stealth (with noise reducing foam like in the fan mufflers. I haven't noticed any high pitch humming but will listen when fan is on lowest setting. Now since mine is the stealth model, that could be eliminating the humming you heard, but I'll try my best and listen. Very, very impressed with this fans power and low wattage. Only one regret: I should have gotten the 8" model, lol. I'm wondering if the stealth model makes much difference. Lowers sound level 75 percent to 25db, so the regular non stealth must put out around 37.5db, as 75 percent of 37.5db would be 25db(for the 8"), so they're quite quiet to start with. As long as there's no high pitch humming! Hope you got yours worked out. If you've learned anything about the humming or any other info about your fan, please update me. You've had yours 14 months longer than me. Thanks for the informational video. Much thanks!
Hello, I have designed a more intelligent new technology air duct fan. The phone can operate the fan function throughout the whole process. I want you to review it and take a short, 1-minute video for me. The product is free For you, you can contact me directly if you need it.
dylanwarrior77 Hey Dylanwarrior77, thanks for your question. You are correct. The test I performed is truly a measure of static pressure. CFMs don't really matter that much with fans and their application within indoor gardens. CFMs are only really important within zero pressure applications and there is no such application in a grow room. Pressure is everything and the more duct, bends, filters you place on a fan circuit the more pressure that is lost. (That's why no one uses inline blade fans any more.) CFM is rated high but the reality is it is all lost in a high pressure application. In some cases the air is pushed backwards as the pressure caused by equipment exceeds the fan's capability! Definitely scope for some follow-up videos if you're interested. Once again, thanks for chiming in. I hope you're subscribed! :) Peace and happy growing, Everest.
Hi Everest maybe I,ve missed it but I can only see the cooling test with a m.h bulb afaik they are much more sensitive to heat that,s what they can,t be dimmed. Would you mind doing the same test with a de hps. I really like how you go about things, a really informative channel Atb coconutgrower
Hello there Coconut Grower. Thanks for your comments and positive feedback. You're right--metal halide lamps are far more susceptible to over-cooling and, for that reason, it is not recommended to dim MH lamps as it has a similar effect and "greenifies" the spectral distribution. To perform the test on a DE HPS I would need to get hold of an AC reflector that cools the lamp directly, rather than by convection as in the case of the AC/DE by Sun System. I will see if I can find something secondhand or adapt one of my existing Air cooled hoods with a DE fitting. I have seen this test performed on Sunlight Supply's UA-cam channel with their top lighting guy and he makes a pretty damn good case for not cooling DE HPS directly. Worth checking out if you haven't done so already.
I designed a new air duct fan, which can be connected to the network via WiFi, controlled by a mobile phone, and set rules on the mobile phone. The function is very powerful and easy to understand. In addition, the device has a recording function, which can record temperature history records, and store startup and shutdown history records. I want to invite 10 people to review it. The samples are free. Welcome to contact me directly.
awesome video usual it is good keep it up. and i need to ask you what type fun are good to use for high temperate (45-50) degree Centigrade for industrial ? thanks i well waiting for you sisr
legese yohannes Hi Legese, if you are dealing with 45 - 50 degrees outside ambient air temperature (e.g. Delhi in May!) then you will definitely need to go the air-conditioner and carbon dioxide supplementation route. There's no point trying to ventilate an indoor garden with air that's already too hot. I hope I understood your question correctly! Let me know :)
Lol awesome vid. Black fan spooled faster...what was the difference in amps?
I need an electric fan that'll push 40psi at 600cfm threw a 1/2 hose with an air chuck on the other end. Do you have any suggestions?
super nice touch w/ that flappy bill. +1 piece of flair :)
Hey Andrewdude302 -- well, it could be an ad! :) I certainly wax lyrical about the Hyper Fan but I genuinely love it. I still haven't gotten around to trying the Max Fan Pro line which I hear kicks ass too -- but I'm loving the CFMs / watt on the Hyper Fan. If you know of a more efficient inline fan let me know and I'll try and get it on a vid. Peace.
Are there any 3 or 4" ones?
You think this would give my windtunnel some more power? And where do you buy them?
Can you use this fan to suck air as well? I am trying to vent our island range using a downdraft vent, but have limited room to run venting in floor joist. If I put this in-line with venting in the floor boards, will it provide strong downdraft were range vent comes out?
+chukobuko Hi Chukobuko. Yes, you can use this fan to suck or blow and it's very powerful. I love the speed controller (included) so you can reduce power if it's a little too strong.
Is is fire hazardous? I know most dehumilifiers are.
Yeah, they should build future PC's and put these things in here. Best CPU cooler.
lol true. but future pc's can have way better designs that won't let that happen.
Any pc they build from now on is a future pc.
sure, if you want 100 db noise...
I don’t think any fan on the market even comes close to a 100db lol
This is intresting and cool but what is this actualy for
It's 2020 Everest. Has the technology changed?
everest you are one of the better video bloggers out there. Follow up is impeccable too.
Arizno3000 Thanks Arizno-I appreciate anybody taking the time to watch my vids but I especially appreciate any feedback. I feel the interaction is just as important as the upload-if not more so-as I often learn a great deal from viewers' insights. Please consider subbing my channel if you care for regular updates on what I'm up to-but, in any case, thanks for stopping by! :)
Would love to see hyper air 8" vs Max fan pro 8"
That would be the perfect PC intake fan.
The "test" is entertaining, but meaningless.
What you're really testing here is at what point whichever fan will stall. Pressure against any fan in the wrong way makes them fail and every fan will do it at a different point. The whole scenario you've created is complicated further by the speed at which each fan turns on and ramps up to full speed.
Looks like someone owns a maxi fan xD
hi Everest what fan design is the quietest? axial, or centrifugal? i know size and quality plays a large part, but lets say you have one of each with similar cfm from the same manufacturer.what would be more quieter?
Thanks for your question Xanode, it's a tricky one though :)
First, let's identify some of the major culprits of "fan noise".
1. Bearing noise - i.e. noise from "out of centre" or failed bearings - housing vibration, loose blades , speed control rotor hum.
2. Wind noise - the US standard for HVAC recommends less than 9 meters per second - that's about 30 km/h ! Whereas I recommend no more than six meters per second or about 20 km/h for a quiet grow. High velocities cause high turbulence, duct noise and outlet noise. Duct size plays a huge part - increase the duct size, decrease the air velocity, decrease the noise - e.g. use 10 " duct on a 6" fan (using reducers) for maximum quietude!
Where else does the air noise come from ? - All things being equal - cavitation - that's when we sharply change the direction of high velocity air. Looking at a centrifugal fan the airflow path changes sharply 90 degrees immediately after entering the inlet, passing through the vanes and another sharp 90 degrees another 45 and the last 45 degrees into the duct - in all an angular change of 270 degrees - plenty of possibilities for cavitation and turbulence - whereas in the case of an axial fan the air moves over the blades and straight through the fan housing - so no more than say 65 degrees. Why then use centrifugal ? Old manufacturing technology, simple to make, easy to balance, cheaper to purchase, but it uses up to SIX times the electricity of an axial fan (e.g. Hyperfan) for the same airflow.
So why did centrifugal fans dominate the market for so long? Axial fans historically have low pressure - no good for pulling air through carbon filters and then sending the air down ducts over a few feet. And to get high enough pressures meant using really high rpm and lots of closely spaced blades - technically difficult and cost prohibitive for most indoor growers.
What's unique (as far as I know) about the Hyper Fan is that it uses laminar flow blades - no cavitation - oversize bearings - low bearing noise and three-phase electronic control of speed - no rotor hum during speed control. Also stators placed after rotating blades add pressure to the airstream - meaning the pressure is high enough to pull through a carbon air filter and push through a long duct.
If you only need low speed , low airflow, low pressure - then centrifugal is fine - but electrically inefficient
If you require high speed, high airflow, high pressure (like most indoor growers) then axial / mixed flow will always win for noise, power consumption, price and reliability. Hope that clarifies matters! Peace and happy growing, Everest.
wow, thanks for taking the time to type all that out, that will be a major help in my decision, thanks again Everest.
While not contradicting electrical efficiency claims, I wouldn't say this actually confirms the CFM flow rating of either fan as superior. This test has nothing to do with CFM flow in a way.
It's actually a test proving static pressure.
So... Pulling static air isn't a tug or war scenario unless dealing with large amounts of static pressure induced via inefficient ducting. 99% of people hook these things up wrong.
The fan should be as close to the outlet port as possible, not at the entrance of the ducting.
If you really want to prove CFM ratings you'll have to do another test with non restrictive methods. I'd like to see that test confirming this data with a standalone open air flow readout. I have a feeling it wouldn't be as far separated as one might imagine.
What this ultimately proves is this is a great fan for sealed compartments over the Max-Fan.
IE. This might be the best solution out there for a Laser machine smoke extraction exhaust, in which that is the very thing you're dealing with.
Hi, Do you think I its a good idea to use an in-line fan to build a workshop vacuum?
Bertrand Navarre you can get a huge shop vac for $240 yo.
No
Personally I recommend using a small jet engine removed from a local celebrity’s private jet
Would this 8" hyper fan keep my tent cool enough it's 240x 240x 200m and I have 4 600w hps lights also have inline fan 290cfm also I live in the uk so summer does get hotter or would I need 10" as it would also run on a lower setting then 8" but will suck out more air aswel also if I got 10" would inline fan with 490cfm be okay thanks.
S man use a CFM calculator to work out what your room/tent requires..then buy a fan and filter in accordance to what the calculator gave you.
Hey everest! your newest sub here. Awesome channel.. never really come across one like this. great quality filming ect. I cant wait for your next vid on how to take a ten inch down to two 6" or whatever it is you said :) if you have the time, id love your opinion on whether i should stick with two 6" phresh filters (the 6x24 ones) on 435 cfm fans OR should i upgrade to say a ten inch fan with a bigger phresh filter? i love the hyper 6 inche fans.. so i would def be upgrading to a 10" hyper/phresh combo, but want you honest opinion. im in a 10x10 sealed area
northCALIFA i must also add that smell is the main issue... as opposed to exhausting the room.
northCALIFA Hey NorthCalifa! Well firstly, THANKS for subbing the channel. That's a big slice of Awesome Cake on my breakfast plate. Thank you my friend. :) It's no secret that I'm a big fan of the Hyperfans too. When you have these puppies running 24 / 7 you don't want to be using any more watts than necessary-and these are the most efficient fans I know of in the industry to date. The included speed-controller is a real bonus too as I prefer to over-spec my fans and give myself wriggle-room and some future-proofing when it comes to inevitable upgrades and expansions. :)
On to your 10 x 10 sealed area: Well, as your area is sealed I presume you are using your fan + filter combos for air-scrubbing within your garden, rather than air exchange / ventilation. I'd still recommend scrubbing your garden's volume of air once every minute though-it can't do any harm, especially as you mentioned odor issues. So-2 x 6" vs. 1 x 10"? Well-there are pros and cons to both! Obviously having two scrubbers rather than one means you mitigate the risk of one fan failing-whereas a single 10" fan / filter combo is also a single point of [potential] failure. I have to say though, that I don't know of any growers that have experienced any reliability issues with the Hyperfans-they seem to be very well built and super robust. On the other hand, a 10" Hyperfan + 1400 CFM Phresh Filter is only going to cost you around $478 if you buy them as a set-whereas 2 x 6" fan + filters will cost around $550. (Yes, you've already invested in the 6" fan + filters but they will need replacing at some point further down the line-so do you want to be replacing / servicing two sets of fans and filters of just one?)
What about your existing 435 CFM fans? Are they efficient? Is it time for an upgrade or are they fairly new?
Also-what are you using to dump your grow room's air at the end of the day cycle?
thanks for the great reply Everest. i guess its not a totally sealed room... .it a bedroom. i have a portable ac...with the hot air being ducted throught cieling in closet. the 4 1k lights are all being cooled with a 435cfm that pullls frm the attic and runs through the lights and back up through ANOTHER hole into attic.... then i have my carbon scrubber on another 435 being exhausted through yet another 6 inch hole to attic. im getting crazy smells outside during wk 6-9. SO yes i do think that at least one of my cheap ebay fans is not running as strong. i think my hurricane is doing ok.... but yes.. i will be either buying 2 NEW 6 x 24" phresh filters and (replacing the one AND adding another) or the single 10 inch. sorry... i guess im not completely sealed. i do give bottled co2. will be taking down this room in 2 days.. so ill be redesigning the lungs of the room. THANKS SO MUCH FOR THE HELP BROSKI. have a great day
northCALIFA Okay-so I'm guessing your 6" 435 cfm fan's ducting is Y'd into two and you're cooling your 4 x 1000W reflectors as two rows of two lights (i.e. two in series) - consolidating the two exits back into a single 6" duct and up it goes through the attic. Meanwhile, you are using a single 6" 435 CFM fan to exhaust your room's air.
I would do the following: 1) Buy the 10" Hyperfan + 10" x 39" Phresh Filter. Use THIS as your room's main ventilation. Widen your existing exhaust hole from 6" to 10" rather than using reducers.
2) Use you 6 x24" existing Phresh filter connected to your 435 CFM fan to scrub the air (I'm assuming the 6" Phresh filter is less than two years' old) If you doubt the efficacy of your existing fans, replace with new / better.
3) Check all seals in and out of your grow room-make sure that where ducting comes either in or out, it does so via a duct collar and coupler (as I show in my vids) leaving no air gaps for unfiltered air to squeeze through.
Peace and happy growing, Everest.
will be spending my morning watching more vids from you. I wish i could take a pic and show you.... basically i took a large rectangle square of sheetrock out of the ceiling of the small closet in the spare br....i then took a peice of 1/4" plywood and cut a larger hole to cover the drywall hole in ceiling.... this piece of wood has FOUR 6 inch ducts. 2 on one side pulling attic air thru the lights and exhausting through the second hole... 3rd hole is for my single hose hot air exhaust coming out of portable ac..... and fourth hole is for my now SINGLE 6 inch phresh filter. i hope you can visualize the top of my closet with a piece of plywood covering a whole.... which in turn the plywood has 4 six inch ducting holes in it. . my fans are right about 2 yrs now. i may have to upgrade to the bigger fan/filter combo... just not looking forward to the price... but like you said... 2 6 inches with new filters is not cheap either :). thanks buddy!
Sup Everest, i thought you may be one of the best people to ask about these hyper-fans. I picked up 2 6inch hyper fans new, and both, out of the box new, make a very very high pitched frequency, it really is hard to hear, and also can depend on what angle the fan is facing you, it doesn't matter what speed the fans are running at also, as soon as power is applied the noise starts. I have heard this sound on other brushless, digital type motors and speed controls in drones and it is normal for them. If you happen to have a 6-inch hyper around, if you could possibly take a very close listen to the fan on its lowest speed, that would be massively appreciated. Or maybe you've heard about this before with the hyper fans? Thanks.
Xanode I know, old Post. I've had a 6" hyper fan stealth (with noise reducing foam like in the fan mufflers. I haven't noticed any high pitch humming but will listen when fan is on lowest setting. Now since mine is the stealth model, that could be eliminating the humming you heard, but I'll try my best and listen. Very, very impressed with this fans power and low wattage. Only one regret: I should have gotten the 8" model, lol. I'm wondering if the stealth model makes much difference. Lowers sound level 75 percent to 25db, so the regular non stealth must put out around 37.5db, as 75 percent of 37.5db would be 25db(for the 8"), so they're quite quiet to start with. As long as there's no high pitch humming! Hope you got yours worked out. If you've learned anything about the humming or any other info about your fan, please update me. You've had yours 14 months longer than me. Thanks for the informational video. Much thanks!
How many pounds of thrust can this take ?
Hello, I have designed a more intelligent new technology air duct fan. The phone can operate the fan function throughout the whole process. I want you to review it and take a short, 1-minute video for me. The product is free For you, you can contact me directly if you need it.
How about AC Infinity?
Wouldn't this only be a test of static pressure, and the CFM measurement woudn't make a difference?
dylanwarrior77 Hey Dylanwarrior77, thanks for your question. You are correct. The test I performed is truly a measure of static pressure. CFMs don't really matter that much with fans and their application within indoor gardens. CFMs are only really important within zero pressure applications and there is no such application in a grow room. Pressure is everything and the more duct, bends, filters you place on a fan circuit the more pressure that is lost. (That's why no one uses inline blade fans any more.) CFM is rated high but the reality is it is all lost in a high pressure application. In some cases the air is pushed backwards as the pressure caused by equipment exceeds the fan's capability! Definitely scope for some follow-up videos if you're interested. Once again, thanks for chiming in. I hope you're subscribed! :) Peace and happy growing, Everest.
Hi Everest maybe I,ve missed it but I can only see the cooling test with a m.h bulb afaik they are much more sensitive to heat that,s what they can,t be dimmed. Would you mind doing the same test with a de hps. I really like how you go about things, a really informative channel Atb coconutgrower
Hello there Coconut Grower. Thanks for your comments and positive feedback. You're right--metal halide lamps are far more susceptible to over-cooling and, for that reason, it is not recommended to dim MH lamps as it has a similar effect and "greenifies" the spectral distribution. To perform the test on a DE HPS I would need to get hold of an AC reflector that cools the lamp directly, rather than by convection as in the case of the AC/DE by Sun System. I will see if I can find something secondhand or adapt one of my existing Air cooled hoods with a DE fitting. I have seen this test performed on Sunlight Supply's UA-cam channel with their top lighting guy and he makes a pretty damn good case for not cooling DE HPS directly. Worth checking out if you haven't done so already.
The worst way to compare two fans, good job
how parchise this product sir
Fantastic video as usual Everest. Thanks for sharing!
Perfect Gardens Thanks so much! :)
You are not testing máximum CFM. Instead, you are testing máximum static pressure. Nevertheless, interesting video.
That would make for an awesome fume extractor for my pcb work station
I designed a new air duct fan, which can be connected to the network via WiFi, controlled by a mobile phone, and set rules on the mobile phone. The function is very powerful and easy to understand.
In addition, the device has a recording function, which can record temperature history records, and store startup and shutdown history records.
I want to invite 10 people to review it. The samples are free.
Welcome to contact me directly.
It sounds interesting. Please email me. Contact details on my channel page.
Loves this.
awesome video usual it is good keep it up. and i need to ask you what type fun are good to use for high temperate (45-50) degree Centigrade for industrial ? thanks i well waiting for you sisr
legese yohannes Hi Legese, if you are dealing with 45 - 50 degrees outside ambient air temperature (e.g. Delhi in May!) then you will definitely need to go the air-conditioner and carbon dioxide supplementation route. There's no point trying to ventilate an indoor garden with air that's already too hot. I hope I understood your question correctly! Let me know :)
+legese yohannes yes
What is these for? Someone?
Moving air
No love for the Tjernlund MK series?
William Tjernlund Plenty of love William! Are you interested in taking on the challenge? :)
yes!
William Tjernlund Great! Please send me a message via Facebook or you can find my email address on my channel page. Thanks!
Was there a video on the challenger?
this tickles me just like a tractor pull would.
Well 1st off you didn't even turn on both fans at the same time
This isn't an accurate way to check whitch fan has higher flow
I want to put one of these in my PC
D00ble That would be some serious motherboard cooling! Lol! :)
MaxFan should be embarrassed, there is no excuse for this, I want a refund!
Inconclusive. You should have used dollar bills instead of euro.
EngineeringFun :)
Disliked. You can clearly see that the "winner" was the one sponsoring this video..
You copy everything monstergardens.com does...
+Billy Bob WE WILL NOT LET YOU FAIL!
BN
Wierd money
smells of biased BS'ery
+Fun in the sun Give me a more powerful 8" fan to sniff. It's been a while since I made this video. Maybe a topic worth revisiting.
How? Lol. Hyper fans are awesome