Cloudline A8 Quiet 8 Inch Inline Duct Fan with Speed Controller EC Motor - Ventilation Extractor Fan for Heating Cooling Booster Grow Tents Hydroponics

Initial thoughts, I give this 5 stars, but, the speed controller has these 10 small obnoxiously bright LED lights, so I'm whacking one star. They're the white/blue type. Wow, they're like miniature lasers piercing your eyes. They should have gone with red, not the white/blue. The fan is made of plastic, but it's durable. Blades are sturdy. No flimsy materials used. The fan is pretty quiet. Speeds 6+ are pretty noisy, but then again, when you're shoving 730 cubic feet of air into an 8" tube, it's going to make some noise. I find that acceptable. Lots of air flow, which is what we wanted. Once we start using this more, I may be back to update if needed.

I purchased this blower for use with an 8” independent insulated duct system that I installed in my attic to redistribute excess heat from the room my new wood burning stove is located in, to the rest of the house. The blower is very quiet even at full speed can move large a large volume of air. The variable speed control is nice although I do believe it would have been nice that the corded speed control’s form factor matched a US a rectangular switch plate/electrical outlet face plate dimension with and/or a faceplate mounting kit for a clean, permanent installation as the faceplate of the control is just a bit too big. Very happy with the unit so far

A quality product! Really really quiet, and well constructed . Blower shipped with lots of mounting and fastening materials - More than I would have expected! Clearly a good company, and if I need another blower, I will go to AC Infinity.

very high quality - powerful fan system

My kids rooms are a very long duct run distance from the central unit and their rooms have always been warmer in the summer and cooler in the winter, to the point that I have contemplated getting portable A/C unit(s) to help cool the room(s). Luckily from the duct distribution area both the kids room were on a single duct that was split, insert the 8" booster unit before the split, installed 2x4's as a frame across the trusses, then installed the blower motor with a little cut up yoga mat between wood & trusses and motor & wood for a little extra dampening and its as quiet as can be, other than as much air coming through the register as we want you cant tell its installed. Bonus: On my furnace circuit board I have an EAC connection and this allowed me to use that as my hot while connecting my neutral and ground in the connections box, this controls the off & on of the booster fan (my hvac system allows up to 1 amp off the EAC connection) so I had to make sure the motors draw was less than 1 amp. I am not an expert so if you don't know what you are doing hire someone who does, this is informational only. But I couldn't be more happy right now, worth the $$$.