---
product_id: 639420006
title: "CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics"
brand: "ac infinity"
price: "€ 617.75"
currency: EUR
in_stock: true
reviews_count: 5
category: "Ac Infinity"
url: https://www.desertcart.nl/products/639420006-cloudline-t4-quiet-4-inline-duct-fan-with-temperature-humidity
store_origin: NL
region: Netherlands
---

# Ultra-quiet 28 dB noise Integrated temp & humidity control 205 CFM airflow CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

**Brand:** ac infinity
**Price:** € 617.75
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your air game—quiet, smart, and powerful ventilation for the modern pro.

## Quick Answers

- **What is this?** CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics by ac infinity
- **How much does it cost?** € 617.75 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/639420006-cloudline-t4-quiet-4-inline-duct-fan-with-temperature-humidity)

## 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

- • **Sleek Modern Design:** Powder-coated black finish blends seamlessly into any professional or home setup.
- • **Scalable & App-Ready:** Easily integrates with other devices and controlled via intuitive Android app for ultimate convenience.
- • **Whisper-Quiet Operation:** At just 28 decibels, it’s quieter than a library—boost comfort without distraction.
- • **Precision Climate Control:** Smart temperature & humidity sensor keeps your environment perfectly balanced.
- • **Power-Efficient Performance:** Consumes only 21 watts while delivering powerful 205 CFM airflow for optimal ventilation.

## Overview

The AC Infinity CLOUDLINE T4 is a 4-inch inline duct fan engineered for superior ventilation with a powerful 205 CFM airflow and whisper-quiet 28 dB operation. Featuring an integrated temperature and humidity controller, it ensures precise environmental control ideal for grow tents, hydroponics, or any indoor climate-sensitive space. Its modern powder-coated design and app compatibility make it a scalable, energy-efficient solution trusted by thousands of professionals.

## Description

Temperature Humidity Controller

Review: Awsome products
Review: Facile da gestire, scalabile a piacimento anche con luci di altra marca - La base per un sistema affidabile, scalabile a piacimento anche con luci di marca diversa, meglio la versione a 6 porte. Acquista pratica con l'app android va benissimo. Consigliatissimo

## Features

- Temperature Humidity Controller

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06ZXWN3BG |
| Air Flow Capacity | 205 Cubic Feet Per Minute |
| Best Sellers Rank | #1,076,394 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #1,391 in Exhaust Fans |
| Brand | AC Infinity |
| Brand Name | AC Infinity |
| Colour | Black |
| Control Method | Touch |
| Customer Reviews | 4.6 out of 5 stars 6,594 Reviews |
| Electric Fan Design | Exhaust Fan |
| Electric fan design | Exhaust Fan |
| Finish Type | Powder Coated |
| Included Components | Cord |
| Indoor Outdoor Usage | Indoor |
| Is Product Cordless | No |
| Item Weight | 0.01 Ounces |
| Material Type | Plastic |
| Model Name | AI-CLT4 |
| Model Number | AI-CLT4 |
| Mounting Type | Inline Duct Mount |
| Noise Level | 28 Decibels |
| Number of Blades | 10 |
| Power Source | Corded Electric |
| Power Source Type | Corded Electric |
| Room Type | Bathroom, Kitchen |
| Special Features | Temperature Humidity Controller |
| Standby Power Shutoff | 9.76 CFM/watt |
| Style | Modern |
| Style Name | Modern |
| UPC | 854759004785 |
| Voltage | 120 Volts |
| Wattage | 21 Watts |

## Product Details

- **Brand:** AC Infinity
- **Colour:** Black
- **Electric fan design:** Exhaust Fan
- **Material:** Plastic
- **Mounting Type:** Inline Duct Mount
- **Noise Level:** 28 Decibels
- **Power Source:** Corded Electric
- **Room Type:** Bathroom, Kitchen
- **Special Feature:** Temperature Humidity Controller
- **Style:** Modern

## Images

![CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics - Image 1](https://m.media-amazon.com/images/I/51X1jHo681L.jpg)
![CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics - Image 2](https://m.media-amazon.com/images/I/71cik2o8hxL.jpg)
![CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics - Image 3](https://m.media-amazon.com/images/I/71Bmh+hJxgL.jpg)
![CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics - Image 4](https://m.media-amazon.com/images/I/61B8EwuR7nL.jpg)
![CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics - Image 5](https://m.media-amazon.com/images/I/71CDBlYtPJL.jpg)

## 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

### ⭐⭐⭐⭐⭐ Awsome products
*by M***N on 1 June 2024*



### ⭐⭐⭐⭐⭐ Facile da gestire, scalabile a piacimento anche con luci di altra marca
*by P***O on 22 October 2025*

La base per un sistema affidabile, scalabile a piacimento anche con luci di marca diversa, meglio la versione a 6 porte. Acquista pratica con l'app android va benissimo. Consigliatissimo

### ⭐⭐⭐⭐⭐ Amazing inline fan and works great - loads of features
*by U***B on 17 September 2025*



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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-03-19*