AC Infinity CLOUDLINE PRO T4, Quiet 4” Inline Duct Fan with Temperature Humidity VPD Controller, WiFi Integrated App Control - Ventilation Exhaust Fan for Heating Cooling, Grow Tents, Hydroponics
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Availability:
15 left in stock
Arrives
Tuesday, Dec 23
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Size: 4-Inch
Color: Pro Smart Controller
Features
- Designed to ventilate hydroponic grow rooms, transfer heating/cooling, cool AV closets, and exhaust odors.
- Dynamic temperature and humidity programming, with timers, grow cycles, scheduling, minimum speed.
- Remotely connect to our WiFi app to access advance programs, view climate data, and set automation.
- Mixed flow design combined with a PWM-controlled EC-motor for a truly quiet and energy efficient performance.
- Duct Size: 4 | Dimensions: 6.9 x 11.9 x 7.4 in. | Airflow: 205 CFM | Noise: 28 dBA | Bearings: Dual Ball
Brand: AC Infinity
Color: Pro Smart Controller
Electric fan design: Exhaust Fan
Power Source: Corded Electric
Style: Custom
Product Dimensions: 6.9"D x 7.4"W x 11.9"H
Room Type: Kitchen
Special Feature: App Operable, Remote Controlled, Water Resistant
Recommended Uses For Product: Cooling, Exhausting, Ventilating
Noise Level: 28 Decibels
Brand: AC Infinity
Color: Pro Smart Controller
Electric fan design: Exhaust Fan
Power Source: Corded Electric
Style: Custom
Product Dimensions: 6.9"D x 7.4"W x 11.9"H
Room Type: Kitchen
Special Feature: App Operable, Remote Controlled, Water Resistant
Recommended Uses For Product: Cooling, Exhausting, Ventilating
Noise Level: 28 Decibels
Wattage: 21 watts
Number of Blades: 10
Air Flow Capacity: 205 Cubic Feet Per Minute
Blade Length: 74 Inches
Speed: 2800 RPM
Voltage: 120 Volts
Item Weight: 0.01 Ounces
Included Components: Remote,Cord
Indoor/Outdoor Usage: Indoor
Model Name: CLOUDLINE T4
Specification Met: CE, ETL, RoHS
Control Method: Remote
Efficiency: Energy Efficient
Cable Length: 144 Inches
Is Cordless?: No
Number of Power Levels: 8
Motor Type: EC motor
Manufacturer: AC Infinity
Installation Type: Mounted
UPC: 854759004785
Size: 4-Inch
Item Weight: 0.01 ounces
Item model number: AI-CLT4
Is Discontinued By Manufacturer: No
Date First Available: April 17, 2017
Frequently asked questions
To connect the AC Infinity CLOUDLINE PRO T4 fan with the WiFi app, first ensure you have a stable WiFi connection. Download the AC Infinity app on your smartphone and create an account if you haven't already. Power on your fan and follow the in-app instructions to connect the fan to your WiFi network. The process typically involves selecting the fan on your app and entering your WiFi credentials.
The AC Infinity CLOUDLINE PRO T4 is designed with a robust temperature and humidity controller that can handle the environmental control required for grow tents and hydroponic systems. It monitors temperature and humidity levels to maintain the optimal VPD (Vapor Pressure Deficit) for plant growth and can manage conditions in a wide range of settings.
Yes, the CLOUDLINE PRO T4 is versatile and can be used for various heating and cooling ventilation applications beyond grow tents and hydroponics. It's designed to work in any setting requiring efficient air exchange, such as attics, bathrooms, workshops, and more, ensuring optimal temperature and humidity levels are maintained.
The AC Infinity CLOUDLINE PRO T4 is engineered for quiet operation, featuring a mixed-flow design and a PWM-controlled EC motor. It is well-regarded for its low noise output, which makes it an excellent choice for environments where noise levels are a concern, such as residential areas, offices, and especially grow tents where fans can run continuously.
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🚀 Abunda's Overview
This is our summary and key points to consider based on customer reviews.
The AC Infinity 4-Inch PRO fan with Smart Controller receives high praise for its quiet operation at low speeds, the effectiveness in air circulation, and easy installation. It has a well-constructed design with multiple control options afforded by the smart controller. However, users find the fan gets noisy at higher speeds and the vibration may require additional isolation. The controller's complexity and lack of intuitive settings can be a hindrance, although once set up, it operates well.
Pros
- 🔇 Very quiet at low speeds, still effective at moving air
- 🛠️ Easy installation with a sturdy mounting bracket
- 🔄 Adjustable fan direction without uninstalling
- 🌡️ Comes with a long temperature/humidity sensor cable
- 🔧 Multiple control options and works seamlessly with corresponding ducting equipment
- 🏗️ High-quality construction with thick plastic casing
Cons
- 🔊 Becomes noisy at speeds 3 to 10, vibrations may be an issue
- 🔧 Controller setup and settings are complicated and not intuitive
- 🧩 Installation in bathrooms or specific setups may need creative solutions for controller mounting and cord management
Should I Buy It?
If you're in need of a versatile exhaust fan with quiet operation at low speeds and don't mind spending a bit of time on the initial setup, this AC Infinity 4-Inch PRO fan is an excellent choice. It is especially recommended for individuals who need a reliable air circulation solution in spaces like home theaters, grow rooms, or bathrooms. Just be prepared for increased noise when operating at higher speeds and potentially intricate installation scenarios.
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.
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Reviewed in the United States on August 27, 2025 by Steebo
Size: 4-Inch
Color: Pro Smart Controller
There isn't a whole lot of information on this unit. This is exactly what it comes with, and how it works. By the way I'm NOT affiliated, nor know AC Infinity I bought this full price to handle a solar air heater. *EDIT* The below information was on the ORIGINAL 12v Cloudline T4. I bought it again and found out the they've been redesigned and newer models are 24v instead of 12v and NOT compatible with each other (yet look and connect identically I blew my fan plugging the original 12v fan into the new 24v controller). The newer model has more CFM, a longer probe, and has a temperature&humidity probe in one instead of just temperature probe and they've done away with the smart mode feature. Most people would probably welcome the improvements, used for solar heating it's best with the smart mode feature they removed in the new so I ended up returning the newer style and finding another original 12v style. For solar heating, Auto mode of the new would've allowed 2 speeds and switched between them (off, medium, alarm speed) which is okay I suppose... but the smart feature of the original allowed 6 speeds for solar heating and was adaptive to minimizes fluctuations (basically perfect for my solar air heating project) so to me removing the smart feature in the new was devastating. Hardware: The fan comes with a controller, a stencil for mounting said controller, a thermal probe with 8' cord, 4x screws for mounting controller, 4x screws for mounting duct fan, duct fan, 4 drywall anchors, a 2 prong sideways power adapter with 6' cord that converts 100-240V AC 0.8AMax to 12V DC. The controller states Power: 12V DC 4A Output: 12V DC 30W MAX), 6x wire ties, 6x cable mounts, 6x wood screws, 2x 4" duct clamps. The controller can accept 2 fans, as of this review they don't sell another fan separate. I also assume the controller saying 12V DC 30W MAX is with 2 fans attached. The power adapter is small and thin and goes sideways into the wall or surge strip. That means it's one of the better design power adapters that can plug into any outlet of a surge strip and won't block any other outlets nor need to go into the "power adapter" port of a surge strip. The fan uses a quiet PWM motor, 6 speeds, and of mixed flow design. That means it's a jack of all trades kind of fan. Axial fans (think computer fans) have the greatest ability for air flow but poorest ability to overcome static pressure. Centrifugal fans (blowers) have the greatest ability to overcome static pressure, but the poorest air flow of the bunch. This fan is the jack of all trades having both good air flow and ability to overcome static pressure, and likely the most useful for most situations compared to axial or centrifugal. Mixed flow are also the quietest of the different fan types. The fan is IP44 rated (resistant to fluids, dust, heat, and humidity), has dual ball bearings rated to 67,000 hours, the fan can be mounted in any direction, and the thermal probe is stainless steel. The 8' probe cannot be extended nor replaced with a longer as of the date of this review (it has a unique beginning and end), but I had to have the probe 15 feet away so cut the wire to the probe and inside was just normal 2 wire (red/white). I inserted/soldered a 10 foot piece of thermostat wire to extend it, used some shrink tubing and hair dryer to protect it, and then siliconed and had over 20' probe that worked perfect. Installation instructions are clear and illustrated. 1 page is features, 1 page is included hardware, 1 page a diagram, 5 pages installation instructions, 3 pages Power and Setup, 2 pages cleaning instructions, 6 pages programming instructions, 1 page other AC Infinity products, 1 page warranty. The controller displays the fan trigger temp, alarm temp, probe temp, fan speed, brightness (3 settings available), and alert icons (fan failure, alarm, or display lock). The display can be changed from F to C, and maintains settings (in case of power failure). The display can also be turned off and unit still function (by hitting the leaf button). Modes: On = Fans run 24/7 at any of the 6 speeds you set. Auto=Fans will turn on at the speed you set in the On mode once the set temperature is reached. To prevent cycling, it will turn off once it reaches 4F lower than the set temperature (this can be changed to 2F instead). If the Alarm temp is reached the fans will go to max speed and beep every 3 seconds until temps drop below the Alarm temp. Off = No fans Smart = *This mode has been removed and no longer available only the 12v model has it the newer 24v does not* You set the temperature when you want the fan at max speed, and every 4F (can be changed to 2F) the fan speed will lower. This means you put the controller in smart mode and put the temperature to say... 100F. At 80F the fan will automatically turn on the lowest speed (speed 1). At 84F it will go to speed 2, 88F speed 3, 92F speed 4, 96F speed 5, and 100F speed 6. If the alarm temp is reached the fan speed will jump to max and beep every 3 seconds. This means there's a max of 20F between lowest speed and max. Alarm=You set the alarm temp, and when reached the fans will go to max speed regardless and beep every 3 seconds. Only works in On, Auto, or Smart. It can also be turned off. It also can't be set higher than 140F. To lock the controller, you hold the mode button down for 3 seconds. The controller will still function, but pressing anything will cause the lock button to blink only, and not affect anything. Holding it down for 3 seconds again will unlock it. The buffer defaults to 4F or 2C temp difference, but can be set to 2F or 1C. This is a well thought out and built unit. Comes with nearly all the hardware one could need, is easy to setup, the instructions are easy and well illustrated, and the unit is quiet with decent power to overcome static pressure. This is exactly what I needed for my solar air heater. The only odd thing is, the display has 3 brightness settings however it was missed in the manual how to change it. I tried every combo of buttons and holding them down to see if I could change it to no avail. Not that I wanted it dimmer, I was just curious.
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Reviewed in the United States on November 15, 2017 by Clearlake
Size: 6-Inch
Color: Pro Speed Controller
Hello, I figured I would provide some blower feedback in case anyone was contemplating buying and using this as I was. As a DIY builder I added on a couple large rooms and decided it was time to provide some heat and ac. I was able to tap into my central ductwork and run duct for my addition through my crawlspace. The new 6" run ended up being a pretty long 40 feet of ductwork. I initially did not use a duct blower but was pretty happy that my (already finished and being used ) bedroom that now had ac on these hot days. Problem was not much airflow and i had to run the ac much longer at a lower temp to keep my room cool. I looked at the box store duct blowers and decided it probably would not do the job. I searched on Amazon and many claimed to be way too noisy. Mine is in my crawlspace, but I still did not want to hear it. This blower got good reviews so I decided to add it. I installed it pretty close to the beginning of the run so it would push the air forward and hung in from a floor joist with straps. Many people state the y have to run theirs at 1/2 speed or less, I do not I run it at full speed . I hear absolutely no motor noise under the house at all. I do get a mild wind noise from the first vent , none at the second vent. As far as performance when I first fired it up within 30 mins it became the coolest room in the house, actually a bit cold. I have now raised my thermostat from 70 to 74 and it really has made a nice difference in balancing the air out in the house. Hoping for a very long term use out of this since it says it has all bearings on the motor.....so far very happy with it...another DIY success!
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Reviewed in the United States on August 20, 2025 by chris