---
product_id: 41877109
title: "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"
brand: "ac infinity"
price: "€ 315.06"
currency: EUR
in_stock: true
category: "Ac Infinity"
url: https://www.desertcart.be/products/41877109-ac-infinity-cloudline-pro-t4-quiet-4-inline-duct-fan
store_origin: BE
region: Belgium
---

# WiFi app control 28 dBA ultra-quiet 205 CFM airflow 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

**Brand:** ac infinity
**Price:** € 315.06
**Availability:** ✅ In Stock

## Summary

> 🌱 Grow smart, breathe easy — ventilation that’s always a step ahead.

## Quick Answers

- **What is this?** 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 by ac infinity
- **How much does it cost?** € 315.06 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/41877109-ac-infinity-cloudline-pro-t4-quiet-4-inline-duct-fan)

## 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

- • **Built to Last:** Dual ball bearings and water-resistant design ensure reliable, long-term performance.
- • **Compact Yet Powerful:** 4-inch duct fan packs 205 CFM airflow in a sleek 6.9 x 11.9 x 7.4 inch frame.
- • **Whisper-Quiet Efficiency:** PWM-controlled EC motor and mixed flow design deliver powerful airflow at just 28 dBA.
- • **Precision Climate Control:** Dynamic temp & humidity programming with VPD controller for perfect grow conditions.
- • **Seamless Remote Management:** WiFi-integrated app lets you monitor and automate ventilation 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. Featuring a powerful 205 CFM airflow, ultra-quiet 28 dBA operation, and advanced temperature-humidity VPD control, it integrates seamlessly with a WiFi app for remote monitoring and automation. Its durable dual ball bearing motor and water-resistant design make it a top choice for professional growers and tech-savvy users seeking precise environmental control.

## 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

## 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 | #1,542 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 7,640 Reviews |
| Electric Fan Design | Exhaust Fan |
| Electric fan design | Exhaust Fan |
| Included Components | item |
| Indoor Outdoor Usage | Indoor |
| Installation Type | Mounted |
| Is Product Cordless | No |
| Item Dimensions D x W x H | 6.9"D x 11.9"W x 7.4"H |
| Item Weight | 0.01 Ounces |
| 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 Decibels |
| Number of Blades | 10 |
| 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 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)
![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 - Image 2](https://m.media-amazon.com/images/I/71cik2o8hxL.jpg)
![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 - Image 3](https://m.media-amazon.com/images/I/71Bmh+hJxgL.jpg)
![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 - Image 4](https://m.media-amazon.com/images/I/61B8EwuR7nL.jpg)
![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 - Image 5](https://m.media-amazon.com/images/I/71CDBlYtPJL.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

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-07-16*