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need a good value mid-range vent fan - also Vivosun sucks

grefranger

grefranger

New member
Hey Growers! Can someone recommend a brand that makes good quality ventilation fans for a fair price?

Last thing I bought was a variable speed vent fan from Vivosun and it was way too low quality. It had a cheapo unbalanced electric motor that grinded itself to death and died after only about a year of operation. Looking for something that is in the mid-price range and would last for at least a few years.

thanks!
 
I have two grow tents. I have recently switched to 6” AC Infinity in both tents. I was using a 6” Jetfan that worked well. I only switched it out because the infinity gives more control options. The Jetfan is a good product. I would suggest either the infinity or the Jetfan. Both good options if they fit your budget. I understand about the Vivosun fans. Just junk. So are monkey fans. Not worth the time and money. IMHO.
 
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if your growing in a tall tent then do the math to see what size is required for total air exchange every 2 - 3 min, but if you are growing in a smurf tent, very low ceiling that equation is not going to work for you. I would suggest do the math and double the results.. I have grown in a smurf tent this time and the 4" exhaust fan at 203 cfm is not enough to control heat and rh, and that is with total air exchange every couple min..Had to order 6" exhaust fan at 423 cfm so the total exchange is happening every minute or so. ttl cubic ft in smurf tent is around 96 cubic inch.
 
Hi. For controllability all the way down instead of just part way, EC motors (basically a DC motor) will save a lot if energy and wear and are worthwhile looking for. They tend to be more expensive but over the last few years the prices have dropped a ton. AC Infinity and IOBIO are both high quality that we have used, and i now have in my tents for a couple years. Commercially my former employer (consulting engineerig) even had those two iinstalled in a decent sized lab facility at a fraction of the cost of commercial and a huge drop in power. and the AC Infinity controller is freaking aweome. Mine are currently set at 20% which is enough to keep humidity down, with a max setting that ramps them up when temperature calls for it on warm days. and the low power draw of the EC motors is incredible. they are showintg up second hand these days too.
 
In my 2x4x6' tent I use a 6" fan it seldom runs at more than 4 speed with 300w of light and 77F as the setting. My 3x3x5' tent I use a 4" AC Infinity and it runs at 4 max too, 150w max light.. Both are very quiet and efficient at those speeds. They way they are set up in the AC Infinity controller they usually are running constantly at a steady speed fluctuating maybe one speed up or down.

Temp and humidity can be targeted with the fans. And automation is available through the app.
 
I bought a 4" like that. It has a 10 speed manual controller. I bought a used AC Infinity Controller 67 off the bay for cheap to convert it. I use it for house ventilation.

And I have a POS Vivosun 4" that I still use on my mini tent. Not much work load, runs at lowest speed when commanded on.
 
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