---
product_id: 71354164
title: "CLOUDLINE S6, Quiet 6” Inline Duct Fan with Speed Controller"
brand: "ac infinity"
price: "NZ$467"
currency: NZD
in_stock: false
reviews_count: 13
category: "Ac Infinity"
url: https://www.desertcart.nz/products/71354164-cloudline-s6-quiet-6-inline-duct-fan-with-speed-controller
store_origin: NZ
region: New Zealand
---

# 402 CFM airflow 32 dBA ultra-quiet 10-speed wired controller CLOUDLINE S6, Quiet 6” Inline Duct Fan with Speed Controller

**Brand:** ac infinity
**Price:** NZ$467
**Availability:** ❌ Out of Stock

## Summary

> 💨 Elevate your air game—quiet, smart, and unstoppable ventilation.

## Quick Answers

- **What is this?** CLOUDLINE S6, Quiet 6” Inline Duct Fan with Speed Controller by ac infinity
- **How much does it cost?** NZ$467 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/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

- • **Whisper-Quiet Power:** Experience powerful 402 CFM airflow with barely-there 32 dBA noise—perfect for focused work or relaxation.
- • **Energy-Smart EC Motor:** Brushless PWM-controlled motor delivers high efficiency and minimal heat, saving energy without sacrificing performance.
- • **Plug & Play Versatility:** Compact 6” inline duct fan with easy installation, ETL-certified safety, and IP44 rating for reliable indoor use.
- • **Built for High Resistance:** Mixed flow design with stator blades and hydrodynamic wind circles ensures consistent airflow even in tough duct conditions.
- • **Precision Airflow Control:** 10-speed wired controller plus app compatibility lets you tailor ventilation exactly to your environment.

## Overview

The AC Infinity CLOUDLINE S6 is a premium 6-inch inline duct fan delivering 402 CFM airflow at whisper-quiet 32 dBA noise levels. Featuring a brushless EC motor with PWM control, it offers energy-efficient, low-heat operation. Its 10-speed wired controller and app compatibility provide precise ventilation management. Designed with a mixed flow blade system for high resistance environments, it’s ETL-certified and IP44 rated for safe, reliable indoor use—ideal for grow tents, AV racks, and climate control.

## Description

desertcart.com: AC Infinity CLOUDLINE S6, Quiet 6” Inline Duct Fan with Speed Controller | Digital 10-Speed Control, EC-Motor, ETL-Certified, IP-44 Rated, Ventilation Exhaust Fan for Heating Cooling Grow Tents : Patio, Lawn & Garden

Review: Worth the Extra Money—Powerful and Surprisingly Quiet - 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.
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.

## 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

## Images

![CLOUDLINE S6, Quiet 6” Inline Duct Fan with Speed Controller - Image 1](https://m.media-amazon.com/images/I/613XftW84eL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ Excellent, QUIET air flow. FINALLY!
*by J***S on December 15, 2024*

DAY 1: WHY I BOUGHT THESE I bought these hoping to find a 6" fan that could move some air gently, without causing the sound and fury of a small cyclone in my recording studio. With voice over work, extraneous noise is a problem. So is heat, and air!, because VO rooms are usually completely closed off the the outside world. They get hot and stuffy without proper air flow. This is the answer. I have tried 6 different claimed-to-be-quiet fan solutions via Amazon and YouTube reviews... this is unequivocally the best for my situation. I unboxed and hooked one of these up (not to my room, because that will require some ducting and electrical changes) in an untreated echo-y basement room with a hard tiled floor. So no mounting yet, no ducting yet, just the fan on the floor with its 10-level USB-C controller, and me holding my iPhone running the app "SPLnFFT" noise meter at about 12" above the center of the fan, airflow running unimpeded from left to right on the floor, The iPhone was held level so I could read the display. Here are a few hasty values. Starting point: Fan at 0 = 30db (A) This is the room's noise floor when nothing is turned on. The meter terms this level as "Almost Silent". Fan at speed 1 = 37db (A) The meter calls this "Very Quiet". Fan at speed 2 = 45db (A) The meter labels this "Quiet." Fan at speed 3 = 53 db (A) "Comfortable" Fan at speed 4 = 60 db (A) "Moderate" ASIDE: Note that these levels are purely "in the moment," not carefully measured. Use these approximate numbers as a rough estimate only if you are similarly seeking a quiet, controllable fan solution. I did "round off" to the nearest dB, so 37.2 became 37. Keep in mind I intend to use 2 of these fans, 1 to send fresh air into the booth from floor level, and 1 for pulling warm air out of the booth above eye level. I don't want a wind tunnel, simply fresh air moving through the space via insulated, flexible ducting to help keep the air flow noise reduced as it travels into and out of the booth. I anticipate that once installed, I can record spoken/sung material without concern for air noise. Even at speed 1, the air flow felt pretty good. At the next higher settings, it grows noticeably stronger. I only ran through speed settings of 0 to 4, because at 4, I figured I was getting to "you're gonna hear this" territory and decided not try any higher settings. I would not record with air flow noise. But I did step though the rest of the settings, because the fan controller only increases the speed (no going down, only up) until the step after 10, which is off, so I got hear and feel those levels even though I was not interested in measuring them. A pair of these fans will clear the space pretty easily. THE FUTURE: AFTER THE INSTALL, and LONGEVITY I plan to return and update this first-look review with genuinely measured results once the booth is complete. That will likely be another few months because... life, family, and holidays. And if anything fails (controller, fans, whatever) I'll update this then, too.

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-11-06*