TerraBloom 6 Inch (150mm) Inline Fan - 395 CFM Exhaust Duct Fan, Built-In Speed Controller, ETL Listed, Pre-Wired 6 FT Grounded Cord - For Use In Grow Tents With Carbon Filters, Fixtures, Attics

So, I ordered 2 of these to boost the air flow into my daughters bedrooms. Living in a tri-level house in the south, the upstairs bedrooms can be extremely difficult to cool. After installing these into the duct work, their rooms are the coolest in the house! In fact, I have to keep them turned all the way down to keep from freezing them out!I have read several posts that mention the noise level. Here's what I found. My oldest daughter's room has rigid, metal duct work. It has excellent air flow, but the metal transmits sound very efficiently. That being said, the fan is about 8 feet from the floor register and the sound is no louder than a typical fan you would have in the bedroom. She's had up to 3 fans going in there at once to try and cool off her room, so it's a non-issue for her! My youngest has flexible duct where I replaced it several years ago and you can't hear the fan at all.Overall, I am very pleased with these units. They work as advertised, maybe even better! The noise is very tolerable and were very easy to install. My only regret is I didn't order them sooner!

Works great! Very powerful. Love that it is adjustable speed. Seems a little noisy to me, but not overbearing. Probably just as nosiy as others, but this is the first one ive had so that is my honest take on it. Definitely does thw job, movea A LOT of air.

A LITTLE noisy, but not unbearable. That's why I took off a star. I installed this in a duct furthest from my HVAC system. The room it serviced wouldn't cool in the summer, or heat in the winter. After installing this on high and setting the house thermostat to 69 degrees(AC), this fan cooled the room to 67. Thankfully it's adjustable, so I set it on medium and now that room matches the temperature in the room with the thermostat. I couldn't be happier.Meanwhile my HVAC guy said these fans don't help. Yeah, ok. Whatever .I just ordered a RIB (Relay In A Box) for it too. When that comes I'll give it a new outlet that has a relay to turn on and off with the HVAC system.

This is the 3rd fan I have used and so far, this fan kicks butt! I installed my fan on May, 20 2018, as my outtake air flow on my 4' x 8' grow tent. Fan moves massive amounts of air and you can really fine tune the flow with the adjustable air flow. Fan has been running 24/7 for about 6 months now and runs as if its brand new still. In fact, I loved this fan so much, that I purchased another fan (Same exact fan), to use as my intake. My last intake fan was so loud and this fan is ridiculously quite compared to others. 2 days ago, I was sweeping my backyard and went over to check it because I wasn't sure it was still running, it was so quiet... no joke! Highly recommend this fan to anyone!!

I bought the 8 inch booster fan with ABS plastic body to get more air into the bedroom suite. It moves a lot of air at full speed and a little noisy when I tested it out before installation but read the reviews and someone said the noise is not bad once installed. The person was right. I can’t really hear it over the noise from the AC. I hooked it up directly to my AC with a relay so it will turn on and off with the AC. It works really well and I only need to run the fan between medium and high speed setting. Glad I made the purchase.

This fan is extremely powerful. I originally had it hooked up to my 5 x 5 tent with an 8" carbon filter. I'm in a one bedroom apartment so this beast is kind of loud. Had it set up inside the tent with the filter. Was too powerful and causing too much negative pressure. My solution was buy a second tent and hook it up outside with a y connector. Now with the filter outside of the tent with the fan and hooked up to 2 tents the suction is more evenly distributed. So my main point is is this fan is no joke if you only have one grow tent Then this fan maybe too much use it for larger setups or multiple grow tents. Or just buy a smaller fan

This fan become extremely loud after one year in service. Moves a lot of air but is making a lot of high freq noise. I do not recommend it for indoor use.

The media could not be loaded. I’m glad I gave this fan a try. It arrived quickly and was packaged well. The thing is strong enough to pull the air through my 6x16 Inch carbon filter and clean the air in my workshop. It isn't loud, at full speed it’s about 55-65 dB when it’s connected to the filter (I used a phone app to test how loud it is, so it might not be the most precise measurement). The built-in speed controller is definitely a useful perk, I tone it down a bit to make it even quieter. Can’t speak about the longevity of this blower yet, but hope it lasts past its 1 year warranty.