---
product_id: 71354164
title: "CLOUDLINE S6, Quiet 6” Inline Duct Fan with Speed Controller"
brand: "ac infinity"
price: "₨119836"
currency: LKR
in_stock: true
reviews_count: 13
category: "Ac Infinity"
url: https://www.desertcart.lk/products/71354164-cloudline-s6-quiet-6-inline-duct-fan-with-speed-controller
store_origin: LK
region: Sri Lanka
---

# 38W EC motor - energy-smart efficiency 32 dBA noise - whisper-quiet operation 402 CFM airflow - powerhouse breeze CLOUDLINE S6, Quiet 6” Inline Duct Fan with Speed Controller

**Brand:** ac infinity
**Price:** ₨119836
**Availability:** ✅ In Stock

## Summary

> 🌿 Quiet power that keeps your space fresh and your edge sharper.

## Quick Answers

- **What is this?** CLOUDLINE S6, Quiet 6” Inline Duct Fan with Speed Controller by ac infinity
- **How much does it cost?** ₨119836 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/71354164-cloudline-s6-quiet-6-inline-duct-fan-with-speed-controller)

## 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

- • **Ultra-Quiet Performance:** PWM EC motor and dual ball bearings keep noise at a discreet 32 dBA
- • **Precision Airflow Control:** 10-speed wired controller + UIS compatibility for tailored ventilation
- • **Robust Build for 24/7 Use:** Durable mixed flow design with hydrodynamic wind circles ensures longevity
- • **Versatile Ventilation Solution:** Perfect for grow tents, AV racks, mining rooms, and hydroponics
- • **Effortless Installation & Smart Design:** Removable blower, long 9’ cable, and vibration-dampening ready

## Overview

The AC Infinity CLOUDLINE PRO S6 is a premium 6-inch inline duct fan delivering 402 CFM airflow at an ultra-quiet 32 dBA noise level. Powered by an energy-efficient PWM-controlled EC motor consuming just 38 watts, it features a 10-speed wired controller compatible with UIS smart systems. Designed for continuous 24/7 operation, its mixed flow blade design and dual ball bearings ensure reliable, whisper-quiet ventilation ideal for grow tents, hydroponics, AV racks, and high-demand cooling environments.

## Description

desertcart.com: AC Infinity CLOUDLINE PRO S6, Quiet 6” Inline Duct Fan | With Speed Controller - EC Motor Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics : Patio, Lawn & Garden

Review: AC Infinity CLOUDLINE PRO S6 – Quiet and Powerful Cooling for My Miner Room - I purchased the AC Infinity CLOUDLINE PRO S6, 6” Inline Duct Fan with Speed Controller to help keep my miner room cool, and it has exceeded expectations. The EC motor is both powerful and efficient, and what surprised me most is just how quiet it runs, even at higher speeds. Installation was straightforward, and the included speed controller makes it easy to adjust airflow as needed. Running multiple miners can heat up a room quickly, but this fan has made a huge difference — it keeps temps under control without adding a lot of noise or power draw. The build quality feels premium, and I can tell it’s designed to run continuously without issues. ✅ Pros: Very quiet operation, even at high speeds Strong airflow to keep miner room temperatures down Speed controller included for precise adjustment Efficient EC motor saves power over time Solid build quality, designed for 24/7 use ❌ Cons: Higher upfront cost compared to budget inline fans Speed controller cable could be a little longer 💡 Tips: Use insulated ducting to further reduce noise. Mount the fan with vibration-dampening straps for an even quieter setup. Pair it with a temperature or humidity controller for automatic adjustments. Clean the fan and ducts periodically to maintain peak airflow. Bottom Line: The CLOUDLINE PRO S6 is a top-tier ventilation fan that’s perfect for high-demand environments like mining rooms, hydroponics, or grow tents. It’s quiet, efficient, and powerful — exactly what you need for reliable cooling in a 24/7 setup.
Review: Powerful AND quiet...wow! - I have to admit, when I was shopping for a power fan to vent my xTool P2 laser engraver, I was a little worried about power (would this fan give me enough?) and loudness levels (would it be too loud?) and I have to say, it's perfect on all accounts. My system is probably just as complex as you'd guess: xTool P2 Laser, connected to a xTool filtration system, and then vented outside. That's three ducts (printer to filter, filter to fan, fan to outside) at 4", and the P2 itself is natively 3", but I bought an adapter on-line to make it 4". So overall, the fan works great, like wow! You can still hear it - it's not super quiet, but it's also not annoying. It's more of a louder "whoosh" than an annoying whine, if that makes any sense? And that's me running this fan at full-power, which is basically where I'm going to keep it at. It's possible that your needs won't be 100% all the time, and it is absolutely quieter at the slower speeds. The duct connections are perfect, and the 6" to 4" adapters I purchased here on desertcart were absolutely flawless and leak-free. As someone who buys a lot of high-end computer components, one of the things I really appreciated about all of the AC Infinity products (three ducts and this fan) is that it's well packaged, with a lot of accessories. It's almost like opening an iPhone, if iPhones came in dark packaging. It's also clear what this fan was designed for, as it came with a "how to grow hemp" manual, which made me laugh. There's a nice YouTube video on-line that explains how to set this all up specifically with the P2 (with details on the 4" to 6" leak-free custom adapters), and he tells you to get this model, and not the one that has all the bells and whistles (Bluetooth, WiFi, garbage disposal, toothbrush). I'm glad I got this exact model (S6 PRO). The remote is cool, and comes with a nice LONG (9') cable so you can put this wherever you want. You press the button once to turn it on, and it remembers the last settings (1-10) if you hold the power button for four seconds to turn it off. It's pretty cool! I love the design, and the fact that you can remove the center blower, to install the bracket on the wall, and then put the blower back in. Solid build quality. Overall, I'm very happy with this blower fan, and would absolutely recommend it for hydroponics and exhaust systems.

## Features

- Designed to ventilate grow tents, transfer heating/cooling to rooms, circulate air, exhaust odors, and cool AV racks.
- Features a wired 10-speed fan controller; also compatible with all UIS controllers with intelligent programming.
- PWM-controlled EC motor provides quiet and energy-efficient performance with minimal heat and noise.
- Mixed flow design with stator blade and hydrodynamic wind circles enables airflow delivery in high resistance areas.
- Duct Size: 6” | Dimensions: 7.9 x 12.6 x 8.4 in. | Airflow: 402 CFM | Noise: 32 dBA | Bearings: Dual Ball

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07FPFVZTZ |
| Air Flow Capacity | 402 cfm |
| Best Sellers Rank | #1,641 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #1 in Hydroponic Ventilation Equipment |
| Blade Length | 8.4 inches |
| Blade Material | Plastic |
| Brand | AC Infinity |
| Brand Name | AC Infinity |
| Cable Length | 8 feet |
| Collection Name | Inline Duct Fans |
| Color | Pro Speed Controller for S6 |
| Control Method | App |
| Controller Type | Button Control,App Control |
| Customer Reviews | 4.8 out of 5 stars 5,528 Reviews |
| Electric Fan Design | Exhaust Fan |
| Electric fan design | Exhaust Fan |
| Finish Type | Matte |
| Global Trade Identification Number | 00819137020306 |
| Included Components | Cord, Remote |
| Indoor Outdoor Usage | Indoor |
| Installation Type | Inline Duct |
| Item Dimensions D x W x H | 7.9"D x 12.6"W x 8.4"H |
| Item Weight | 0.27 g |
| Material | Plastic |
| Model Name | CLOUDLINE S6 |
| Model Number | AI-CLS6 |
| Motor Type | Brushless Motor |
| Mounting Type | Downrod Mount |
| Noise Level | 32 db |
| Number of Blades | 10 |
| Number of Power Levels | 10 |
| Number of Speeds | 8 |
| Part Number | AI-CLS6 |
| Power Source | AC |
| Product Dimensions | 7.9"D x 12.6"W x 8.4"H |
| Recommended Uses For Product | Inline Duct Fan |
| Room Type | Indoor |
| Size | 6-Inch |
| Special Features | Programmable |
| Specification Met | CE, ETL, RoHS |
| Standby Power Shutoff | High Efficiency |
| Style | Cloudline S6 |
| UPC | 819137020306 |
| Unit Count | 1 Count |
| Voltage | 240 volts |
| Wattage | 38 watts |

## Product Details

- **Brand:** AC Infinity
- **Color:** Pro Speed Controller for S6
- **Electric fan design:** Exhaust Fan
- **Mounting Type:** Downrod Mount
- **Power Source:** AC
- **Product Dimensions:** 7.9"D x 12.6"W x 8.4"H
- **Recommended Uses For Product:** Inline Duct Fan
- **Room Type:** Indoor
- **Special Feature:** Programmable
- **Style:** Cloudline S6

## Images

![CLOUDLINE S6, Quiet 6” Inline Duct Fan with Speed Controller - Image 1](https://m.media-amazon.com/images/I/515G8psanuL.jpg)

## Available Options

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

## Questions & Answers

**Q: What is the range of cfm output, at different settings? can i bring it down as low as 100 cfm?**
A: Hi there, 

Thank you for reaching out to us!

Below I have provided an approximate breakdown of the CFM for the fan on each different speed. 

44 / 88 / 132 / 176 / 220 / 264 / 308 / 351

Kind regards, 

Kenny Ngo
AC Infinity

**Q: Does the fan come with a pressure switch?**
A: No just fan speed

**Q: Is the impeller on fan made of plastic or metal?**
A: is the outer tube made of metal for kitchen hood

**Q: Can I use a T6 intake with an S8 exhaust and fancy controller or will the smart controller only work with the same size ducts?**
A: Duct size should not matter

## Customer Reviews

### ⭐⭐⭐⭐⭐ AC Infinity CLOUDLINE PRO S6 – Quiet and Powerful Cooling for My Miner Room
*by K***L on August 25, 2025*

I purchased the AC Infinity CLOUDLINE PRO S6, 6” Inline Duct Fan with Speed Controller to help keep my miner room cool, and it has exceeded expectations. The EC motor is both powerful and efficient, and what surprised me most is just how quiet it runs, even at higher speeds. Installation was straightforward, and the included speed controller makes it easy to adjust airflow as needed. Running multiple miners can heat up a room quickly, but this fan has made a huge difference — it keeps temps under control without adding a lot of noise or power draw. The build quality feels premium, and I can tell it’s designed to run continuously without issues. ✅ Pros: Very quiet operation, even at high speeds Strong airflow to keep miner room temperatures down Speed controller included for precise adjustment Efficient EC motor saves power over time Solid build quality, designed for 24/7 use ❌ Cons: Higher upfront cost compared to budget inline fans Speed controller cable could be a little longer 💡 Tips: Use insulated ducting to further reduce noise. Mount the fan with vibration-dampening straps for an even quieter setup. Pair it with a temperature or humidity controller for automatic adjustments. Clean the fan and ducts periodically to maintain peak airflow. Bottom Line: The CLOUDLINE PRO S6 is a top-tier ventilation fan that’s perfect for high-demand environments like mining rooms, hydroponics, or grow tents. It’s quiet, efficient, and powerful — exactly what you need for reliable cooling in a 24/7 setup.

### ⭐⭐⭐⭐⭐ Powerful AND quiet...wow!
*by A***N on December 29, 2023*

I have to admit, when I was shopping for a power fan to vent my xTool P2 laser engraver, I was a little worried about power (would this fan give me enough?) and loudness levels (would it be too loud?) and I have to say, it's perfect on all accounts. My system is probably just as complex as you'd guess: xTool P2 Laser, connected to a xTool filtration system, and then vented outside. That's three ducts (printer to filter, filter to fan, fan to outside) at 4", and the P2 itself is natively 3", but I bought an adapter on-line to make it 4". So overall, the fan works great, like wow! You can still hear it - it's not super quiet, but it's also not annoying. It's more of a louder "whoosh" than an annoying whine, if that makes any sense? And that's me running this fan at full-power, which is basically where I'm going to keep it at. It's possible that your needs won't be 100% all the time, and it is absolutely quieter at the slower speeds. The duct connections are perfect, and the 6" to 4" adapters I purchased here on Amazon were absolutely flawless and leak-free. As someone who buys a lot of high-end computer components, one of the things I really appreciated about all of the AC Infinity products (three ducts and this fan) is that it's well packaged, with a lot of accessories. It's almost like opening an iPhone, if iPhones came in dark packaging. It's also clear what this fan was designed for, as it came with a "how to grow hemp" manual, which made me laugh. There's a nice YouTube video on-line that explains how to set this all up specifically with the P2 (with details on the 4" to 6" leak-free custom adapters), and he tells you to get this model, and not the one that has all the bells and whistles (Bluetooth, WiFi, garbage disposal, toothbrush). I'm glad I got this exact model (S6 PRO). The remote is cool, and comes with a nice LONG (9') cable so you can put this wherever you want. You press the button once to turn it on, and it remembers the last settings (1-10) if you hold the power button for four seconds to turn it off. It's pretty cool! I love the design, and the fact that you can remove the center blower, to install the bracket on the wall, and then put the blower back in. Solid build quality. Overall, I'm very happy with this blower fan, and would absolutely recommend it for hydroponics and exhaust systems.

### ⭐⭐⭐⭐⭐ Worth the Extra Money—Powerful and Surprisingly Quiet
*by M***T on July 23, 2026*

I purchased the AC Infinity CLOUDLINE PRO S6 to use as a booster fan for my portable air conditioner. I had previously bought a cheaper inline exhaust fan, but it was extremely loud and stopped working after only two months. So far, this fan has been amazing. The amount of air it moves while remaining quiet is impressive. I only need to run it at about half power, while the cheaper fan had to run at full power constantly and still did not perform as well. I definitely recommend spending the extra money on this fan. It feels well-built, performs exceptionally well, and should ultimately cost less than repeatedly replacing cheaper fans. It has been money well spent.

## Frequently Bought Together

- AC Infinity CLOUDLINE PRO S6, Quiet 6” Inline Duct Fan with Speed Controller - EC Motor Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics
- AC Infinity Flexible 6-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust
- AC Infinity Noise Reduction Clamp 6-Inch, Duct Coupler with Stainless Steel Clamps, Flexible Rubber Coupling for Inline Fans and Carbon Filters in Growing and HVAC

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-08-22*