iPower 4 Inch 195 CFM Inline Fan Vent Blower, Air Carbon Filter, 8 Feet 4-Layer Ducting and Rope Hanger for Grow Tent Ventilation, Exhaust, HVAC Heating Cooling, 4'' Ventilatin System-Upgrde New

This fan is no joke and performs really well. It's simple enough to use with a turn dial. It flows a massive amount of air, the opening is dimensionally accurate so it will fit whatever you have. It will empty a smoky kitchen or 3d printer enclosure fast. I love it.

I used this device in a manner it may not have been intended for. I connected the hose to my laser engravers enclosure and to the in line fan unit. Then I connected the fan to the filter. The fan pulls air, smoke, and fumes from the enclosure and into the filter. I'm very pleased with the results! This fan itself is very quiet and operates easily with the included control panel and the app. I can hardly even hear it rubbing! The filter is very well made and surprisingly large. In terms of filters, bigger is definitely better!For fellow laser users, I think this unit is fine for diode lasers. I tend to get some smoke through the filter when heavily engraving wood but none for any other materials. I left the fan unit that came with my enclosure in place and run it simultaneously. I also created a small opening in the one corner of the enclosure so the unit can pull air through/avoid creating a vacuum.

I am a retired hvac professional. I purchased this (6” electronically commutated or “EC” motor) product because of the price point and the included controls.My application is a in line booster fan in a residential supply duct.The good. The fan is quiet and moves an impressive amount of air. It was very easy to install the included controller and sensor. Duct installation required extra sealing gasket as the actual OD of the fan inlet/outlet is more like 5&5/8”. Set up and programming is easy and intuitive. Despite the poor explanation and instruction. One thing to know is that the fan “ON” setting that ranges from 1 to 10 is actually a high limit point for AUTO mode. I really like this because instead of going to full speed on auto every time it runs heat or cool at around 400cfm (that's 1 ton of cooling)you can limit the airflow to a more reasonable amount for a residential floor register. Mounting the sensor in the duct before the fan and setting heat to 85f and cool to 65f controls the fan automatically for heat and cool to your predetermined “Fan On speed” And with the app you can override or adjust as needed. You can start and stop based on humidity as well that would enable you to indirectly control a humidifier as well for the space served.THE BAD.I Fan quits working randomly sometimes three or four times a day sometimes once a week. The controler display shows the fan ramping up but the fan does not run. Amazon did provide replacement which was good. However, replacement did the same thing. I verified that the unit was properly grounded and checked for radio frequency interference, but alas, the problem persists. My solution was to install a smart switch, a time clock, program a duty cycle so that the power is interrupted at the Supply cord periodically throughout the day, unplugging the unit and rebooting it.

The media could not be loaded. I am using this with a laser engraver so I can vent the fumes from wood/plastic outside to protect myself if I'm in the same room while it's on. The knob gives you a progressive speed control, so you can adjust it as much or as little as you want. I typically use it on medium unless I am doing plastics, in which case I do high just to be on the safe side. On low, there is enough air extraction that I no longer smell even a hint of wood smoke with my puny 10w laser going on high. I still run it on medium just to be safe though!On low and medium, I don't even notice the noise over the noise of my laser engraver. For Low, you get around 36.5 DB at 1 foot away. For Medium, it's around 38db at 1 foot, and on high it stabilizes at 46 db (there's a spike to around 55 db while the fan ramps up. The click of the switch turning the fan on and off is almost as loud as the fan itself on high. I will be buying a second of these for another fume extraction system I am building in another room. A+ item, I did not expect something this cheap to actually work this well and be this quiet.

I used it but not a fan of it.

Are there better inline fans? Absolutely. Get one of those if you're financial guru and can afford a wifi fan with more sensors than aircraft. However, if you are looking for a variable inline fan for a 2x2, 2x4, or 3x3 tent, this thing is perfect. Very quiet with good airflow and easy to set up inside or outside your tent. Worthy of 5 stars and a steal for the money.

The blower works great for craft laser use. The adjustable speed control is a separate unit and I think it’s a good idea.

I used this as an air mover in my class C motorhome. I needed to circulate the air from the front lift to the rear bedroom.I ran 4" flexible duct with this blower in line. It is fairly quite, and moved plenty of air.

Lo conecte para quitar el calor en un local pequeño generado por refrigwradores y si saco gran aire caliente. No del todo pero creo que ha solucionado un mas de 80 % mi problema de calor y la smaquinas estan trabajando mejor sin calentarse como lo estaba antes de ponerlo.