---
product_id: 41877109
title: "AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan w/Environment Controls"
brand: "ac infinity"
price: "3504 kr"
currency: NOK
in_stock: true
reviews_count: 13
category: "Ac Infinity"
url: https://www.desertcart.no/products/41877109-ac-infinity-cloudline-t4-quiet-4-inline-duct-fan-w
store_origin: NO
region: Norway
---

# WiFi app control - remote climate management 26 dBA noise - whisper-quiet operation 226 CFM airflow - powerful ventilation AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan w/Environment Controls

**Brand:** ac infinity
**Price:** 3504 kr
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your air game—quiet power meets smart control!

## Quick Answers

- **What is this?** AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan w/Environment Controls by ac infinity
- **How much does it cost?** 3504 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/41877109-ac-infinity-cloudline-t4-quiet-4-inline-duct-fan-w)

## Best For

- ac infinity enthusiasts

## Why This Product

- Trusted ac infinity brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Robust & Durable Build:** IP44-rated, dual ball bearings rated for 67,000 hours, and versatile mounting options ensure long-lasting, reliable performance.
- • **Seamless Remote Access:** Manage your fan settings and monitor real-time climate data effortlessly via the intuitive WiFi app—anytime, anywhere.
- • **Ultra-Quiet Efficiency:** Mixed flow design with PWM-controlled EC motor delivers powerful airflow at a barely-there 26 dBA noise level.
- • **Plug-and-Play Convenience:** Comes with all necessary hardware and a sleek, space-saving power adapter that won’t block your outlets.
- • **Precision Climate Control:** Dynamic temp & humidity programming with customizable schedules and alarms keeps your environment perfectly balanced.

## Overview

The AC Infinity CLOUDLINE T4 is a 4-inch inline duct fan engineered for hydroponic grow rooms, AV closets, and odor control. It features 226 CFM airflow, ultra-quiet 26 dBA operation, and advanced environment controls with WiFi app connectivity. Its mixed flow EC motor ensures energy-efficient, whisper-quiet ventilation, while IP44 rating and dual ball bearings guarantee durability. Perfect for professionals seeking precise, remote-managed climate control with easy installation.

## Description

desertcart.com: AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan w/Environment Controls | Temperature Humidity VPD Controller, WiFi App, EC-Motor, IP-44 Rated, Ventilation Exhaust Fan for Heating Cooling, Grow Tents : Patio, Lawn & Garden

Review: Great exhaust fan for tent setups! - Honestly this things super quiet & i don’t even notice it running in my tent setup. At full blast this thing pulls a lot of CFM & will clear the area in minutes! can be ducted & hung easily in setups!
Review: Really good - 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.

## 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: 226 CFM | Noise: 26 dBA | Bearings: Dual Ball

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06ZXWN3BG |
| Air Flow Capacity | 205 cfm |
| Best Sellers Rank | #942 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1 in Hydroponic Ventilation Equipment |
| Blade Length | 74 inches |
| Blade Material | Plastic |
| Brand | AC Infinity |
| Brand Name | AC Infinity |
| Cable Length | 144 inches |
| Collection Name | Hydroponic Ventilation Equipment |
| Color | Pro Smart Controller for T4 |
| Connector Type | AC power plug |
| Control Method | App |
| Controller Type | App Control |
| Customer Reviews | 4.7 out of 5 stars 7,668 Reviews |
| Electric Fan Design | Exhaust Fan |
| Electric fan design | Exhaust Fan |
| Included Components | item |
| Indoor Outdoor Usage | Indoor |
| Installation Type | Mounted |
| Item Dimensions D x W x H | 6.9"D x 11.9"W x 7.4"H |
| Item Weight | 0.27 g |
| Main Power Connector Type | AC power plug |
| Material | Plastic |
| Model Name | CLOUDLINE T4 |
| Model Number | AI-CLT4 |
| Motor Type | EC motor |
| Mounting Type | Downrod Mount |
| Noise Level | 28 db |
| Number of Blades | 10 |
| Number of Packs | 1 |
| Number of Power Levels | 8 |
| Number of Speeds | 10 |
| Part Number | ACAICLT4 |
| Power Source | AC |
| Product Dimensions | 6.9"D x 11.9"W x 7.4"H |
| Recommended Uses For Product | Inline Duct Fan |
| Room Type | Kitchen |
| Size | 4-Inch |
| Special Features | App Operable, Remote Controlled, Water Resistant |
| Specification Met | CE, ETL, RoHS |
| Speed | 2800 rpm |
| Style | Cloudline T4 |
| UPC | 854759004785 |
| Voltage | 120 volts |
| Wattage | 21 watts |

## Product Details

- **Brand:** AC Infinity
- **Color:** Pro Smart Controller for T4
- **Electric fan design:** Exhaust Fan
- **Mounting Type:** Downrod Mount
- **Power Source:** AC
- **Product Dimensions:** 6.9"D x 11.9"W x 7.4"H
- **Recommended Uses For Product:** Inline Duct Fan
- **Room Type:** Kitchen
- **Special Feature:** App Operable, Remote Controlled, Water Resistant
- **Style:** Cloudline T4

## Images

![AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan w/Environment Controls - Image 1](https://m.media-amazon.com/images/I/61G8jiWednL.jpg)
![AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan w/Environment Controls - Image 2](https://m.media-amazon.com/images/I/71CrnIX0DzL.jpg)
![AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan w/Environment Controls - Image 3](https://m.media-amazon.com/images/I/61i2wGg6ZIL.jpg)
![AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan w/Environment Controls - Image 4](https://m.media-amazon.com/images/I/61SmKNELlcL.jpg)
![AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan w/Environment Controls - Image 5](https://m.media-amazon.com/images/I/71Rsp9VjkXL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: What is the CFM, wattage, and decibel level?**
A: To help alleviate confusion, wanted to chime in here to say the answer posted to this question is outdated from an OLD model.  This product has had two improvements since...  one is that the fan is now running on a 24v motor, and the CFM is now measured at 205 (improved from a 12v motor at 152cfm).  As for noise, I don't think the decibel rating has changed as it is still quiet.  The second improvement is much more recent (Decemenr 2018) and was made to the controller unit which now includes humidity control as well as temperature.

**Q: Would it work to install this fan through the house wall so that I can bring the cool, outdoor evening air indoors without having the windows open.**
A: I've had this idea for 20 years and just never got around to it.  First, this is about 200 cfm. Is 200 cfm enough to cause a temp difference. You would think so especially when the temp outside is 64 degrees and the temp inside is 75 degrees. I had a window fan and I was trying to draw cold air from one side of the house by setting the window fan to blow air outside on the otherside of the house. It was a double fan. I had all the windows open about 4 inches. I could not cool my house down. I personally don't want to go to sleep with all the windows in my house open. This little 4inch fan my work ok in one room provided you were circulating the air correctly.  Pumping air into a room creates positive pressure so you would have to vent that room to allow the air to leave that room at the same time. Two or three of these or maybe four depending on the size of the house could possibly allow one to circulate enough air to cause a significant temp change. If not then there are larger units. My plan is to use several 8 inch units placed in a central location in the attic and create vents in each room connected to the outside and then to the central fan which would exhaust to the outside or simply in the attic which is vented to the outside.

**Q: Can this fan be used to draw radon gas out of my basement if exhasted outside?**
A: I am using this for a radon fan.  The radon numbers were in the 60s before the fan. After installing it, we have dropped down to 2-7 range.  I'm going to add a second one and forgot get the binders to the same area of 0-2.

**Q: Can the T4 be mounted vertically?**
A: Yes.  While the instructions don't make it very clear, you definitely can.  Mine has been mounted vertically for two months and working perfectly.  I use it to cool an entertainment cabinet.  In the Product Description at the link below, it says, "The motor houses dual ball bearings rated at 67,000 hours which allows the duct fan unit to be mounted in any direction."

https://www.acinfinity.com/component-cooling/duct-fan-systems/cloudline-t4-quiet-inline-mixed-flow-duct-fan-system-4-inch/#product-description

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great exhaust fan for tent setups!
*by N***H on August 24, 2026*

Honestly this things super quiet & i don’t even notice it running in my tent setup. At full blast this thing pulls a lot of CFM & will clear the area in minutes! can be ducted & hung easily in setups!

### ⭐⭐⭐⭐⭐ Really good
*by C***E on November 15, 2017*

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.

### ⭐⭐⭐⭐⭐ The lil fan that does
*by B***O on October 5, 2022*

I'm disabled, so dont have an income that allows me to do much. But I can afford ac infinity items, because you need only purchase them once, and they do what they are advertised to do. I've purchased AC Infinity products, now, for several months, 3 gallon grow bags, the 4" inclined fan and controller, air plates, and several other of theyer fans to control the small closet I've turned into my grow room. I will get self watering systems, soon hopefully, but ac infinity does all the work for me, and soon all I'll have to do is watch them grow. I still plan on getting the 2x2 tent they offer, soon, and will gett more fans, still, and a dry tent. Theyer products are exceptionaly made, quiet, and energy efficient. Im not a professional grower, but AC Infinity, makes me feel like I'm on the right path, with the choices I've made. I will continue to by my products from AC Infinity till a better product line comes along, offering better quality, and user friendly products. I dont see it happening any time soon, so I'm very happy with all I've purchased from AC Infinity. The 4" inline fan works and move so much more air than i thought it could displace. And its so quite. The controller makes every thing almost plug and play. Easy to understand directions, witch i definitely needed, but instructions walk you through it. And theyer are hundreds of you tube vids, to help walk you through it, easily. AC Infinity will continue to be my go to choice for my grow room. My grow Loves them, and I Love what I grow, so my choice has been made for me. Bit it's really just comman sence. Thank you, AC Infinity, for maken my life easier. A very happy and satisfied customer.

## Frequently Bought Together

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*Product available on Desertcart Norway*
*Store origin: NO*
*Last updated: 2026-09-27*