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AC Infinity

AC Infinity CLOUDLINE H4, Quiet 4” Inline Duct Fan with Speed Controller, Humidity Proof IP65-Rated Ventilation Exhaust Fan in Grow Tents, Mushroom Fruiting Chambers for Propagation and Fungiculture

  • Based on 61 reviews
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Availability: Only 1 left in stock, order soon!
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Arrives Friday, Jul 31
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Size: 4-Inch


Color: IP65 Speed Controller for H4


Features

  • Specially designed for mushroom growing to quietly ventilate grow spaces and help control indoor climate levels.
  • IP65-rated to ensure performance in high-humidity spaces while resisting dust, debris, and moisture.
  • Includes a fan speed controller with precise 10-level control for exact airflow and CO2 buildup prevention.
  • EC motor with PWM control enables quiet and energy-efficient performance for consistent fresh air exchange.
  • Duct Size: 4" | Dimensions: 6.9 x 11.9 x 7.4 in. | Airflow: 212 CFM | Noise: 27 dBA | Bearings: Dual Ball

Description

The first inline fan designed to withstand up to 99% relative humidity, perfect for fungi growth. Connect this duct fan to CONTROLLER 69 or later (sold separately) and download the AC Infinity app to access custom activation using climate triggers, grow cycles, scheduling, and automation programming. Create automation for your devices to systematically manage your grow tent environment. Set customizable alerts that can trigger to almost any event. Interactive graph intuitively displays temperature, humidity, and VPD data. Input target figures to help your grow tent approach and maintain your ideal environment. Stay on top of what's happening in your grow space using alerts and notifications so you can quickly counteract any environmental spikes. CLOUDLINE H4 CLOUDLINE A4 CLOUDLINE PRO S4 CLOUDLINE PRO T4 CLOUDLINE A6 CLOUDLINE PRO S6 CLOUDLINE PRO T6

Brand: AC Infinity


Color: IP65 Speed Controller for H4


Electric fan design: Blower


Power Source: AC


Style: Cloudline H4


Product Dimensions: 6.9"D x 11.9"W x 7.4"H


Room Type: Indoor


Special Feature: Programmable


Recommended Uses For Product: Inline Duct Fan


Mounting Type: Downrod Mount


Power Source: AC


Room Type: Indoor


Special Features: Programmable


Recommended Uses For Product: Inline Duct Fan


Mounting Type: Downrod Mount


Number of Speeds: 10


Noise Level: 27 Decibels


Wattage: 18 watts


Air Flow Capacity: 212 Cubic Feet Per Minute


Speed: 3000 RPM


Voltage: 100 Volts


Indoor Outdoor Usage: Indoor


Control Method: Touch


Standby Power Shutoff: High Efficiency


Is Product Cordless: No


Number of Power Levels: 10


Motor Type: Brushless


Installation Type: Permanent Installation


Material: Plastic


Color: IP65 Speed Controller for H4


Electric Fan Design: Blower


Style: Cloudline H4


Finish Type: Powder Coated


Collection Name: Specialty Fans


Item Dimensions D x W x H: 6.9"D x 11.9"W x 7.4"H


Item Weight: 2.09 Kilograms


Size: 4-Inch


Brand Name: AC Infinity


Included Components: Cord


Model Name: CLOUDLINE H4


Model Number: AI-CLH4


Manufacturer: AC Infinity


UPC: 819137024595


Unit Count: 1.0 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Jul 31

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Top quality.
Size: 4-Inch Color: IP65 Speed Controller for H4
Had it for a month. Quiet, works great, no issues. I use it in my printer room to evacuate the air out of doors. I run it constantly, on low super-quiet settings when I am not printing, and on higher settings (a little louder) when actively printing bad stuff like ASA. The little noise it makes at high speed does not bother me because I leave the room anyway when I am printing the noxious stuff. It was obvious right out of the box that this was first-rate quality. I also bought the AC Infinity anti-backup valve and 12' of their 4 ply 4" flexible duct - also very high quality stuff. You will not be disappointed. ... show more
Reviewed in the United States on May 20, 2026 by Carl Fausett
    • Quiet and useful fan
Size: 4-Inch Color: IP65 Speed Controller for H4
This fan has been good so far. It feels well made and it is quieter than I expected, which matters because I did not want something loud running nearby. The airflow seems solid for the size, and the controls are pretty straightforward. I like that it feels more like a real ventilation fan and not a cheap little fan. It is not tiny, so you do need room for it, but overall I think it does the job well. ... show more
Reviewed in the United States on May 16, 2026 by ryguy
    • Works very well but not as quiet as I hoped
Size: 4-Inch Color: IP65 Speed Controller for H4
I have this ventilating a closet. Works very well but not as quiet as I hoped even with a sound absorbing mount. But, I suppose that's the penalty for the high output. The many step controller also works well without inducing additional "noise."
Reviewed in the United States on May 15, 2026 by DanangDoc
    • Top shelf gear for the home grower. Highest quality I have seen. So impressive.
Size: 4-Inch Color: IP65 Speed Controller for H4
AC Infinity has changed the game of home growing for everyone. This fan is priced very well for the level of quality and features it packs. I plugged it into my AC Infinity AI controller and it detected it without hardly any intervention. Since I am not growing plants, but gourmet mushrooms I needed to disable the AI (broke my heart because its truly amazing) and set it manually at the precise numbers I needed. High humidity and low CO2 for fruiting. I had trouble getting it to accept the numbers I wanted since I was not growing standard plants. Called support and had Judy on the line with zero wait time. Judy was a controller ninja and walked me through the clicks to get exactly what I needed set up. Perfection! She didn't ask a million questions, didn't have to go through a painful data collection pre call, just picked up the phone and asked how she could help me. I explained my issue and she had a solution in minutes. Made sure it worked for me and was a pleasure to work with. I don't call support for anything, even at work, unless I am totally dead in the water with no options. AC Infinity made me rethink this stance. The fan itself works great. 10 different settings. Perfect for a mushroom grow tent thanks to the true waterproof rating. Humidity won't even touch this thing. The fan looks sleek and runs silent. I see there is a sound damper available but can't imagine why one would need it unless they sleep next to the tent because its so quiet. The setup was quick and easy. It moves a ton of air and keeps the FAE spot on in my tent. I love the AC Infinity products. I already had a fan and filter and 2 humidifiers that I swapped out just so I could use them with the controller and have more matching gear. I want to set up a garden inside now since this system is so easy to use and works so well. ... show more
Reviewed in the United States on August 27, 2025 by Steebo
    • Works well!
Size: 4-Inch Color: IP65 Speed Controller for H4
Great product.
Reviewed in the United States on June 6, 2026 by Amazon Customer
    • Impressive and high quality Impressive and high quality
Size: 4-Inch Color: IP65 Speed Controller for H4
Review Image by hw_engineer
Honestly, incredible for the money. This company is providing some really interesting equipment at this price point. Perfect for my HVAC needs in a mechanical closet that needed some quiet airflow.
Reviewed in the United States on September 27, 2025 Reviewed in the United States on September 27, 2025 by hw_engineer
    • Ac infinity and beyond!
Size: 4-Inch Color: IP65 Speed Controller for H4
Can’t go wrong with anything ac infinity don’t try and save money just go ac infinity
Reviewed in the United States on June 14, 2025 by Real product reviews
    • Great products
Size: 4-Inch Color: IP65 Speed Controller for H4
I really like their product line and the UIS interface to control them. They have very good customer support. You can use the Controller pro 69 series to control multiple devices and simplify controlling your grow environment.
Reviewed in the United States on January 5, 2025 by Patti

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