---
product_id: 41877109
title: "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"
brand: "ac infinity"
price: "38698 som"
currency: KGS
in_stock: true
reviews_count: 8
category: "Ac Infinity"
url: https://www.desertcart.kg/products/41877109-cloudline-pro-t4-quiet-4-inline-duct-fan-with-temperature
store_origin: KG
region: Kyrgyzstan
---

# WiFi app control - smart remote access 28 dBA noise - whisper-quiet operation 205 CFM airflow - powerful ventilation 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

**Brand:** ac infinity
**Price:** 38698 som
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your grow game with whisper-quiet, smart airflow mastery!

## Quick Answers

- **What is this?** 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 by ac infinity
- **How much does it cost?** 38698 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/41877109-cloudline-pro-t4-quiet-4-inline-duct-fan-with-temperature)

## 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

- • **Complete Pro Kit:** Includes long sensor cables, mounting straps, and accessories for hassle-free install
- • **Ultra-Quiet Efficiency:** Mixed flow design with PWM EC motor delivers max airflow at minimal noise
- • **Plug & Play Versatility:** Compact 4” duct size fits grow tents, AV closets, and hydroponics setups
- • **Precision Climate Control:** Dynamic temp & humidity VPD programming for perfect grow conditions
- • **Seamless Smart Integration:** WiFi-enabled app lets you monitor and automate from anywhere

## Overview

The AC Infinity CLOUDLINE PRO T4 is a 4-inch inline duct fan engineered for hydroponic grow rooms, AV closets, and climate-sensitive spaces. It delivers 205 CFM airflow at an ultra-quiet 28 dBA noise level, powered by an energy-efficient PWM-controlled EC motor. Featuring advanced temperature and humidity VPD control, it integrates seamlessly with a WiFi app for remote monitoring and automation. The package includes extensive mounting hardware and a 25-foot sensor cable, making it the ultimate smart ventilation solution for professionals seeking precision and convenience.

## Description

desertcart.com: 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 : Patio, Lawn & Garden

Review: Top notch quality and an overall very impressive package - This is really an impressive package from top to bottom. I've been buying AC Infinity products for many years now and have always been completely satisfied with everything, this is no exception. The difference is this is the largest, most important, and most expensive thing I've ever bought from them. I bought the 12" Pro fan to use as a return booster fan for my home's ducted heat pump. I wanted it particularly to boost the return air upstairs in my house to assist with cooling and dehumidification because it gets so much warmer on the second floor. I programmed it to always be running at minimum speed, trigger at 70F and then increase in speed by 1 notch for every 1 degree F rise in temperature beyond 70F, up to a maximum of speed 8. It will also revert to minimum speed at night, regardless of temperature. Setting all of this up was very easy in the app. I didn't even attempt it with the controller because I could tell it would be much more difficult. My recommendation is...just use the app. It was incredibly easy to set up and only took a minute. The quality of the fan is superb. I actually bought spring vibration isolators to mount it on since I installed it in my second floor in a crawl space (just sitting on the floor). I wanted to make sure vibration would not be a problem. However, it turns out I didn't even need the springs, the fan runs so smooth that there is no vibration or noise transmission through the house at all, even on the higher speed settings. The air noise gets loud on the higher speeds (7+), but the fan still runs so smooth that it is virtually silent downstairs. This is very impressive for a fan like this. About the package contents...you get a LOT. Way more than you will actually need. They include VERY long cables (the temp/humidity probe is about 25 feet), several different mounting options including a strap for hanging it and heavy duty screws, two 12" duct straps, and a bunch of zip ties and accessories for cleaning up the cables. All in all its a very impressive package. They do make duct fans of equivalent size that are capable of moving a lot more air than this, but those are very expensive commercial/industrial units and do not include this level of controllability and customization out of the box. If you want or need something like this for your home I can confidently say this is the best option on the market. I can't yet comment on longevity, but this fan will be running continuously in my home from now until November, so we'll see how it does. Based on my experience with several other AC Infinity products I own, I expect this thing will run perfectly for many years without issue. But I will update this review accordingly.
Review: 350 CFM @ 40w - If you want quality, good airflow with significant energy savings, do consider this - I had been on a hunt for low power high CFM fan. I researched on centrifugal fans, mixed flow fans, EC fans. Giving the power consumption and features I settled with this one. Packaging was impressive and the parts themselves reek of quality. DC fan with Dual ball bearing fans are a welcome :). Parts included are; thermostat-controller console, temperature sensor probe, power brick, fan unit, 2 x ducting clamps The fan itself is much lighter compared to other AC fans (not surprising given the fact that power delivery is through a brick) Operation was fairly straightforward once you get used to controls on the thermostat/controller console. I have been using two of these (intake+exhaust) to cool off a mining rig and I am quite content with the performance. I have tried Active Air 6" centrifugal fan rated at 400 CFM. Though being a quality product, was too loud and consumed 105 watts. These are rated at 350 CFM at 40W with added benefit of thermostat control - smart operation. The fans are tad loud at high speed (speed 5-6) but not even close to other fans out there. Speed 1-4 are quiet for my taste. Following are the numbers captured from my test (see image below), CFM measured by converting from Ft/min unit measured by UT363 power consumption measured at the wall using Kill-A-Watt meter Noise captured using a cellphone app measured 3ft away from the fan (probably unreliable but you get the relative idea; active air used to be 85dB+ on this app) Electricity savings per month (considering 10 cents per unit) 40w vs 100w $3 vs $7.2. That's a $4 saving in a month from a single fan. Much more with when the speeds are lower and automatically controlled using thermostat-smart operation. Other thoughts Since this is a mixed flow fan it might not be good to have lots of bends in your ducting. For long ducts with bends, centrifugal fans are much more effective. My exhaust fan didn't suffer from reduced CFM due to bend when I ran it through a 6ft 6" ducting. CFM on intake end reduced by 40% because of filter. (YMMV) Warranty could have been at least 3 years because in comparison others do provide 3,5 or even 10 years (Vortex). However, arguably there are more points of failure for this unit.

## 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06ZXWN3BG |
| Air Flow Capacity | 205 Cubic Feet Per Minute |
| Best Sellers Rank | #2,087 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1 in Hydroponic Ventilation Equipment |
| Blade Length | 74 Inches |
| Blade Material | Plastic |
| Brand Name | AC Infinity |
| Cable Length | 144 Inches |
| Collection Name | Hydroponic Ventilation Equipment |
| Color | Pro Smart Controller |
| Connector Type | AC power plug |
| Control Method | Remote |
| Controller Type | App Control |
| Customer Reviews | 4.7 4.7 out of 5 stars (18,912) |
| Electric Fan Design | Exhaust Fan |
| Included Components | item |
| Indoor Outdoor Usage | Indoor |
| Is Product Cordless | No |
| Item Dimensions D x W x H | 6.9"D x 7.4"W x 11.9"H |
| Item Weight | 0.01 Ounces |
| Main Power Connector Type | AC power plug |
| Manufacturer | AC Infinity |
| Material | Plastic |
| Model Name | CLOUDLINE T4 |
| Model Number | AI-CLT4 |
| Mounting Type | Hanging Mount |
| Noise Level | 28 Decibels |
| Number of Blades | 10 |
| Number of Power Levels | 8 |
| Number of Speeds | 10 |
| Power Source | Corded Electric |
| Recommended Uses For Product | Cooling, Exhausting, Ventilating |
| Room Type | Kitchen |
| Special Features | App Operable, Remote Controlled, Water Resistant |
| Specification Met | CE, ETL, RoHS |
| Speed | 2800 RPM |
| Standby Power Shutoff | Energy Efficient |
| Style | Custom |
| UPC | 854759004785 |
| Voltage | 120 Volts |
| Wattage | 21 watts |

## Product Details

- **Brand:** AC Infinity
- **Color:** Pro Smart Controller
- **Electric fan design:** Exhaust Fan
- **Mounting Type:** Hanging Mount
- **Power Source:** Corded Electric
- **Product Dimensions:** 6.9"D x 7.4"W x 11.9"H
- **Recommended Uses For Product:** Cooling, Exhausting, Ventilating
- **Room Type:** Kitchen
- **Special Feature:** App Operable, Remote Controlled, Water Resistant
- **Style:** Custom

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/51X1jHo681L.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

### ⭐⭐⭐⭐⭐ Top notch quality and an overall very impressive package
*by L***D on April 3, 2026*

This is really an impressive package from top to bottom. I've been buying AC Infinity products for many years now and have always been completely satisfied with everything, this is no exception. The difference is this is the largest, most important, and most expensive thing I've ever bought from them. I bought the 12" Pro fan to use as a return booster fan for my home's ducted heat pump. I wanted it particularly to boost the return air upstairs in my house to assist with cooling and dehumidification because it gets so much warmer on the second floor. I programmed it to always be running at minimum speed, trigger at 70F and then increase in speed by 1 notch for every 1 degree F rise in temperature beyond 70F, up to a maximum of speed 8. It will also revert to minimum speed at night, regardless of temperature. Setting all of this up was very easy in the app. I didn't even attempt it with the controller because I could tell it would be much more difficult. My recommendation is...just use the app. It was incredibly easy to set up and only took a minute. The quality of the fan is superb. I actually bought spring vibration isolators to mount it on since I installed it in my second floor in a crawl space (just sitting on the floor). I wanted to make sure vibration would not be a problem. However, it turns out I didn't even need the springs, the fan runs so smooth that there is no vibration or noise transmission through the house at all, even on the higher speed settings. The air noise gets loud on the higher speeds (7+), but the fan still runs so smooth that it is virtually silent downstairs. This is very impressive for a fan like this. About the package contents...you get a LOT. Way more than you will actually need. They include VERY long cables (the temp/humidity probe is about 25 feet), several different mounting options including a strap for hanging it and heavy duty screws, two 12" duct straps, and a bunch of zip ties and accessories for cleaning up the cables. All in all its a very impressive package. They do make duct fans of equivalent size that are capable of moving a lot more air than this, but those are very expensive commercial/industrial units and do not include this level of controllability and customization out of the box. If you want or need something like this for your home I can confidently say this is the best option on the market. I can't yet comment on longevity, but this fan will be running continuously in my home from now until November, so we'll see how it does. Based on my experience with several other AC Infinity products I own, I expect this thing will run perfectly for many years without issue. But I will update this review accordingly.

### ⭐⭐⭐⭐⭐ 350 CFM @ 40w - If you want quality, good airflow with significant energy savings, do consider this
*by D***R on March 31, 2018*

I had been on a hunt for low power high CFM fan. I researched on centrifugal fans, mixed flow fans, EC fans. Giving the power consumption and features I settled with this one. Packaging was impressive and the parts themselves reek of quality. DC fan with Dual ball bearing fans are a welcome :). Parts included are; thermostat-controller console, temperature sensor probe, power brick, fan unit, 2 x ducting clamps The fan itself is much lighter compared to other AC fans (not surprising given the fact that power delivery is through a brick) Operation was fairly straightforward once you get used to controls on the thermostat/controller console. I have been using two of these (intake+exhaust) to cool off a mining rig and I am quite content with the performance. I have tried Active Air 6" centrifugal fan rated at 400 CFM. Though being a quality product, was too loud and consumed 105 watts. These are rated at 350 CFM at 40W with added benefit of thermostat control - smart operation. The fans are tad loud at high speed (speed 5-6) but not even close to other fans out there. Speed 1-4 are quiet for my taste. Following are the numbers captured from my test (see image below), CFM measured by converting from Ft/min unit measured by UT363 power consumption measured at the wall using Kill-A-Watt meter Noise captured using a cellphone app measured 3ft away from the fan (probably unreliable but you get the relative idea; active air used to be 85dB+ on this app) Electricity savings per month (considering 10 cents per unit) 40w vs 100w $3 vs $7.2. That's a $4 saving in a month from a single fan. Much more with when the speeds are lower and automatically controlled using thermostat-smart operation. Other thoughts Since this is a mixed flow fan it might not be good to have lots of bends in your ducting. For long ducts with bends, centrifugal fans are much more effective. My exhaust fan didn't suffer from reduced CFM due to bend when I ran it through a 6ft 6" ducting. CFM on intake end reduced by 40% because of filter. (YMMV) Warranty could have been at least 3 years because in comparison others do provide 3,5 or even 10 years (Vortex). However, arguably there are more points of failure for this unit.

### ⭐⭐⭐⭐⭐ Works great and is very quite, well worth the money.
*by T***S on April 9, 2026*

This is the second one I have bought over the last 3 years. The first one I bought was the 6" blower and I placed it on my Barndo to element negative pressure due the the building being spray foamed. It works great. The second one I bought is the 10" on my goodness at the air it moves. I put it on the main line feeding my game room that is completely on the other end of my house. That room has always been running 5 to 7 degrees warmer the the rest of the house. We could hardly feel any air coming from the vents. After installing it you can feel the movement of air and it cooled the air down to rest of house in about 10 minutes. I have it in auto and have it so it stays on setting 2 100% of time and ramps up as needed. You can't hear the blower at all. Supper quite and highly recommend.

## Frequently Bought Together

- 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
- AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 8-Feet Long for Heating Cooling Ventilation and Exhaust
- AC Infinity Air Carbon Filter 4" with Premium Australian Virgin Charcoal, for Inline Duct Fan, Odor Control, Hydroponics, Grow Rooms

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.kg/products/41877109-cloudline-pro-t4-quiet-4-inline-duct-fan-with-temperature](https://www.desertcart.kg/products/41877109-cloudline-pro-t4-quiet-4-inline-duct-fan-with-temperature)

---

*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-04-24*