--- product_id: 228868320 title: "CLOUDLINE S4, Quiet 100mm Inline Duct Fan" brand: "ac infinity" price: "9076499₫" currency: VND in_stock: true reviews_count: 13 url: https://www.desertcart.vn/products/228868320-cloudline-s4-quiet-100mm-inline-duct-fan store_origin: VN region: Vietnam --- # 205 CFM airflow Ultra-quiet 28 dBA noise 8-speed PWM control CLOUDLINE S4, Quiet 100mm Inline Duct Fan **Brand:** ac infinity **Price:** 9076499₫ **Availability:** ✅ In Stock ## Summary > 💨 Elevate your air game with silent, smart airflow mastery! ## Quick Answers - **What is this?** CLOUDLINE S4, Quiet 100mm Inline Duct Fan by ac infinity - **How much does it cost?** 9076499₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/228868320-cloudline-s4-quiet-100mm-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 - • **Whisper-Quiet Power:** Experience powerful airflow at just 28 dBA—your secret to stealthy ventilation. - • **Seamless Integration:** Pair with AC Infinity’s smart controllers and app for automated climate management and real-time alerts. - • **Energy-Smart Efficiency:** Brushless EC motor maximizes airflow with minimal energy use—eco-friendly and cost-saving. - • **Precision Airflow Control:** 8-speed PWM controller lets you tailor ventilation perfectly to your environment. - • **All-Inclusive Installation:** Comes with everything you need—power adapter, mounting hardware, and manual for hassle-free setup. ## Overview The AC Infinity CLOUDLINE S4 is a 100mm inline duct fan delivering 205 CFM airflow at an ultra-quiet 28 dBA noise level. Featuring an 8-speed PWM-controlled brushless EC motor, it offers energy-efficient, customizable ventilation ideal for grow tents, AV racks, and indoor air circulation. Compatible with AC Infinity’s smart controllers and app, it enables automated climate control and real-time environmental monitoring. The kit includes all necessary mounting hardware and a power adapter for easy installation. ## Description Improve your air exchange while maintaining a quiet and energy-efficient performance. Exhaust odors and effectively strengthen airflow to support your ideal environment. Connect this duct fan to CONTROLLER 69 or later (sold separately) and download the AC Infinity app to access custom activation using climate triggers, grow cycles, scheduling, and automation programming. Create automation for your devices to systematically manage your grow tent environment. Set customizable alerts that can trigger to almost any event. Interactive graph intuitively displays temperature, humidity, and VPD data. Input target figures to help your grow tent approach and maintain your ideal environment. Stay on top of what's happening in your grow space using alerts and notifications so you can quickly counteract any environmental spikes. AC Infinity is a technology company that specializes in environmental controls for agricultural and HVAC applications. Our smart controllers and integrated grow equipment are designed to work together to create the perfect climate for your plants. ## Features - Designed to ventilate grow tents, transfer heating/cooling to rooms, circulate air, exhaust odors, and cool AV racks. - Features an 8-speed manual controller utilizing PWM. See T-Series for temperature and humidity controls. - Mixed flow design combined with a PWM-controlled EC-motor for a truly quiet and energy efficient performance. - Kit also includes corded AC power adapter, installation manual, and all necessary mounting hardware. - Duct Size: 4” | Dimensions: 6.9 x 11.9 x 7.4 in. | Airflow: 205 CFM | Noise: 28 dBA | Bearings: Dual Ball - This product is equipped with a Type-G power plug and is compatible with the voltage commonly used in the United Kingdom. ## Technical Specifications | Specification | Value | |---------------|-------| | Air Flow Capacity | 205 Cubic Feet Per Minute | | Asin | B07JB292JC | | Best Sellers Rank | 6,966 in Garden (See Top 100 in Garden) 1 in Greenhouse Ventilation Equipment | | Blade Length | 7.4 Inches | | Blade Material | Plastic | | Brand Name | AC Infinity | | Collection Name | Channel Fans | | Colour | Pro Speed Controller for S4 | | Control Method | Push Button | | Controller Type | manual | | Country Of Origin | China | | Customer Reviews | 4.7 4.7 out of 5 stars (4,057) 4.7 out of 5 stars | | Electric Fan Design | Exhaust Fan | | Finish Type | Powder Coated | | Global Trade Identification Number | 00819137020290 | | Included Components | Cord | | Indoor Outdoor Usage | Indoor | | Installation Type | wall/ceiling mounted | | Is Product Cordless | No | | Item Dimensions D X W X H | 17.5D x 18.8W x 30.2H centimetres | | Item Weight | 2.61 Kilograms | | Manufacturer | AC Infinity | | Material | Polypropylene | | Model Name | CLOUDLINE S4 | | Model Number | CTR62A | | Motor Type | Brushless | | Mounting Type | Wall Mount/Ceiling Mount | | Noise Level | 28 Decibels | | Number Of Blades | 10 | | Number Of Packs | 1 | | Number Of Power Levels | 8 | | Number Of Speeds | 8 | | Part Number | AI-CLS4 | | Power Source | Power Adapter | | Recommended Uses For Product | Air Circulation, Cooling, Exhausting | | Room Type | Kitchen | | Size | 100mm | | Special Features | High Velocity, Waterproof | | Speed | 2800 RPM | | Standby Power Shutoff | Alta eficiência | | Style | Industrial | | Unit Count | 1.0 count | | Upc | 819137020290 | | Voltage | 240 Volts (AC) | | Wattage | 21 watts | ## Product Details - **Brand:** AC Infinity - **Colour:** Pro Speed Controller for S4 - **Electric fan design:** Exhaust Fan - **Mounting type:** Wall Mount/Ceiling Mount - **Power source:** Power Adapter - **Product dimensions:** 17.5D x 18.8W x 30.2H centimetres - **Recommended uses for product:** Exhausting, Cooling, Air Circulation - **Room type:** Kitchen - **Special feature:** High Velocity, Waterproof - **Style:** Industrial ## Images ![CLOUDLINE S4, Quiet 100mm Inline Duct Fan - Image 1](https://m.media-amazon.com/images/I/616TVs-68xL.jpg) ## Available Options This product comes in different **Colour Name, Size Name** options. ## Questions & Answers **Q: What is the max temp of use for this fan? i see you said 240f, but all other manufacturers with plastic impellers say max temp 140f. are you certain?** A: Always stay a minimum of 25% below specified temp. At minimum they can warp and and motor performance would be affected **Q: If powered from a switched outlet, will it remember the last speed setting or does that require constant power?** A: Morning RS, the S4 will not remember your fan speed. It’s a manual setting only. I also have a T4 with a smart controller and it does remember and can be set to auto for heat and humidity. The T4 is for auto exhaust and S4 is intake. If it is your only fan go with the T4. Also, if you have more than 200sf to ventilate go directly to the T6. The are very quiet which is important as my room is under a bedroom. Hope this helps. **Q: How well does this work with a carbon filter?** A: I have a 350 Cfm Coco/Carbon Fiber filter that I place on the Exit side of my application. I have tested the filter on both the intake and the exit. I found these units Push much better than they Pull. I do have to increase the power by 10% when I install the exit filter, but it's not really an issue in my application. **Q: What is the best way to connect this to 12 or 24 volt system?** A: AC infinity, also looking for DC system compatibility off grid use with solar and lithium battery banks. Want to avoid DC->AC->DC to save wattage. I like that your fan design is efficient, but not in my case as the conversion costs wattage/heat. Ended up buying Atwood unit which does 12/24v which is no where near as nice a fan as this... ## Customer Reviews ### ⭐⭐⭐⭐⭐ working well and quiet *by on Reviewed in the United Kingdom 2 April 2026* very happy with this extractor so far working well and quiet .. ### ⭐⭐⭐⭐⭐ Works well at bringing fresh air inside *by on Reviewed in the United Kingdom 8 May 2026* Really good using this for a studio room to pull fresh air inside as it gets so hot and stuffy inside with the sound dampening foam on walls and recording equipment and so far really good and does the job ### ⭐⭐⭐⭐⭐ Fast and almost silent ❤ *by on Reviewed in the United Kingdom 13 June 2021* It does its job, obviously full speed it sounds like a turbo slightly but if you run it a few notices under full power then it's almost silent, I would reccomend this to anyone! Perfect buy, easy to install and away you go! ## Frequently Bought Together - AC Infinity CLOUDLINE PRO S4, Quiet 4” Inline Duct Fan with Speed Controller – EC Motor Ventilation Exhaust Fan for Heating Cooling Booster, 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 Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust --- ## 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.vn/products/228868320-cloudline-s4-quiet-100mm-inline-duct-fan](https://www.desertcart.vn/products/228868320-cloudline-s4-quiet-100mm-inline-duct-fan) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-09-20*