AC Infinity CLOUDLINE A6, Quiet 6” Inline Duct Fan with Speed Controller, EC Motor - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

This booster has a very clever (good) mechanical design allowing for easy installation. The fan unit itself, is separate from the end nozzles, and can be removed by simply loosening some ring clamps. I was also happy to learn that the fan remembers the last used speed setting. I've installed this in a soffit with limited access to the speed controller. I'm turning it on and off by switching the power to the unit by powering it from the EAC (electronic air cleaner) output from the furnace, which turns on whenever the furnace blower is running. I've installed it inline to a 6" duct running up to a 2nd floor bedroom. Running on the #3 speed setting, and noise is not a problem, and it significantly boosts the air flow. Great design. So far working great after several months of operation.

Truthfully, if you're on a budget and still want that superior product, this is simply the best option. You don't need a fancy controller to start. You can start with this fan with its simple click controller and eventually work your way up, which is exactly what I did.I started by ordering this and the AC Infinity 6" Carbon Filter. Which is all you really need to run a good flower. However once you get your feet wet in your new environment and you want to start paying attention to things like VPD and regulate the climate, you can then upgrade to a more advanced AC Infinity controller! I upgraded to the Controller 67 and I'm eventually looking to upgrade to the 69 Pro. The fan comes with everything in the box that you need to connect it to the UIS AC infinity controllers.Now onto how I feel about this fan? I feel it's an absolute lifesaver. Speaking AFTER my previously mentioned upgrades, I am properly able to regulate & control the climate inside of my tent and achieve a proper VPD for flowering and my plants seem to love it! I use the 6" in a 4x4 and it works well, the only time I struggle is during lights off when the plants transpire water. I do think because of this, I would probably eventually upgrade this unit to the 8", However I would still stay with the Lite line. I really appreciate the flexibility in different ways you are able to use these fans with so many different controller options.I would recommend this to anybody looking for a GOOD quality budget inline fan for their grow set up.

Quiet, nice hum. This thing really moves the air when at high speed, so I keep it at mid or lower setting. This unit `was my solution to pull cold air upstairs to my addition in Florida. Before I found this solution, it was sweltering upstairs in summer. We put the unit in line with the ductwork and mounted it to the rafters so there was no ceiling vibration. This is the third time I have installed one of these because I have three ducts splitting from the AC trunk to three spaces upstairs. Now, all my air conditioning dreams have come true! It is nice and cool upstairs! The units run all day long. Love this product and would give it a higher rating off there was one! My next plan is to use one of these to pull more heat to my downstairs in my old, drafty historic home in Utah!`

I used it as a return vent booster in my house, works great. And it remembers the speed setting. It’s low noise; But not silent. Been running for 6 months now. I am happy with it. However I might want one that fits the duct work. Quite a lot of gap and duct tape were used.. however I think there are other models that are used for home hvac specifically.

Bought this unit to replace a low-cost booster fan for my home HVAC system. The lower cost unit worked well but was very noisy. I was able to run this unit at a speed of 3 or 4 and it produced the same amount of air as the lower cost unit but was much quieter. With a speed setting of 3 it's almost impossible to hear. I have this unit wired up to the humidifier or Electronic Air Cleaner switched output on the furnace which is rated to 1amp each. This unit draws about 0.5amp at full speed and about 0.2amps on the speed setting of 4. If you want this unit to fit to the standard round 6" duct work, you will need to have both ends of the 6" duct work crimped. An uncrimped end of the duct work is too big.

I'm using this to divert some air from a mini split from a basement area to a first floor. The performance is impressive. The only pitfall is that it is actually loud. It's a white noise so I don't find it objectionable but it is definitely apparent at the higher settings.

I read all the reviews and it seemed that the AC Infinity fan was the "Rolls Royce" of fans, i took a chance and ordered it for delivery to South Africa. Shipping was quick, notifications everystep of the way and the fan quality was phenominal.The packaging, included accessories and the fan itself are really really good. I really appreciate the ten fan levels and found the fan noise exceptionally low (compared to my prevoius old fan).Highly recomend this product.

The fan is a real winner because it comes with an adjustable controller, so it can be as quiet and energy efficient as you need it to be. Anything above 1/4 of full speed would probably be considered loud if your overall goal is to be inconspicuous for something like a stealth grow, but I havent found a reason to run it at full blast or remotely close to it. In fact, I havent even found a reason to turn it up past level 4 when connected to the carbon filter. Easily controls the smell and regulates the temperature/humidity in my 5x5 tent with Bloomplus xp4000 light on level 2 most of the time. Love the compact size compared to the enormous fan that came with one of the tent kits.