- Cloudline S4 Inline Duct Fan (4-Inch)
- 8-Speed Manual Controller
- AC Power Adapter
- Mounting Hardware & Corded Ties
- Two Steel Duct Clamps
- Instruction Manual
AC Infinity Cloudline S4 Inline Fan System w/ Speed Controller - 4" Duct
starting from 0% interest financing from
/mo.
- Mixed-flow design delivers 205 CFM to maintain airflow even with a carbon filter attached
- EC motor technology operates at a quiet 28 dBA to keep your ventilation discreet
- The 4 inch duct connection fits standard grow tent ports and carbon filter setups
- 2-year warranty
- View More Details
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Commercial & Bulk Purchasing
We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.
Who This Is For
- You are upgrading your ventilation because your current fan is too loud for a shared living space or bedroom.
- You are adding a dedicated intake because your passive vents can no longer keep up with rising daytime temperatures.
What We Found
- The EC motor in this S4 is remarkably smooth and does not produce an electronic buzz at low speeds.
- We like that the motor and fan blade assembly slides out of the bracket for easy cleaning between crops.
What Users Say
- One user swapped their old fan for this unit and finally stopped hearing the motor hum through their bedroom wall.
- Adjusting the 8 speed dial allowed one owner to find the exact airflow balance needed to stabilize their humidity.
AC Infinity Cloudline S4 Inline Fan System w/ Speed Controller - 4" Duct
Struggling with stagnant air, excess heat, or unwanted odors in your grow tent? The AC Infinity Cloudline S4 provides a powerful and quiet solution, engineered to create the perfect environment for your plants. This 4-inch inline duct fan uses a state-of-the-art EC motor to deliver precise, energy-efficient airflow, ensuring your ventilation is effective without being disruptive.
The mixed-flow design allows this versatile fan to maintain strong airflow even in high-pressure setups, making it ideal for both intake and exhaust applications. It includes a simple 8-speed controller for easy adjustments right out of the box. For those seeking advanced automation, it's fully compatible with the AC Infinity Smart Controller 69 Pro, allowing for climate-based triggers and scheduling. Pair it with a compatible 4" carbon filter and ducting to create a complete air filtration and circulation system.
What's Included
Features
🤫
Quiet EC Motor
Operates at just 28 dBA, making it one of the quietest fans available for home grows.
💨
Powerful Airflow
The mixed-flow design delivers 205 CFM, ensuring consistent performance even with filters attached.
🎛️
Precision Speed Control
Includes an 8-speed manual controller for fine-tuning airflow to match your plants' needs.
🛠️
Durable & Easy to Clean
Features an IP44-rated housing and detachable components for straightforward cleaning and maintenance.
Specifications
| Specification | Value |
|---|---|
| Duct Size | 4" |
| Total Dimensions | 7.40 x 11.93 x 6.93 in. (18.8 x 30.3 x 17.6 cm) |
| Cord Length to Controller | 240 in. (20 feet) |
| Cord Length to Plug | 96 in. (8 feet) |
| Total Airflow | 205 CFM |
| Total Noise | 28 dBA |
| Max Speed | 2800 RPM |
| Static Pressure | 223 Pa |
| Max Power Draw | 28 W |
| Average Power Usage | 21 W |
| Ingress Protection | IP 44 |
| Fan Bearings | Dual Ball |
| Mounting Positions | Horizontal or Vertical |
| L10 Life Expectancy | 67,000 Hours |
Support & Manuals
Warranty
This AC Infinity product comes with a two-year warranty. All sales are final. Please note this does not cover non-durable goods or consumables designed to be recurrently used.
FAQs
What's the difference between the S-Series and T-Series fans?
The primary difference is the controller. The S-Series, like this Cloudline S4, includes a manual 8-speed controller. The Cloudline T4 and other T-Series models come with a smart controller that allows for automated climate control based on temperature and humidity triggers.
How loud is the Cloudline S4?
The Cloudline S4 is designed for quiet operation, producing only 28 dBA at its highest speed. This is comparable to a soft whisper, making it ideal for use in living spaces without causing a disturbance.
Can I use this fan for both intake and exhaust?
Yes, absolutely. The mixed-flow impeller design is highly efficient for moving air in either direction. You can use it to bring fresh, cool air into your tent or to exhaust hot, stale air out.
What else do I need to install this fan?
The kit includes the fan, controller, and mounting hardware. To complete your setup, you will need 4-inch ducting, such as the AC Infinity Flexible Ducting, and potentially a carbon filter if you need to control odors.
How do I get the best results with my ventilation system?
Proper setup is key to maximizing efficiency. Ensure your ducting has minimal bends, and match your fan's CFM rating to the volume of your grow space. For a detailed guide on optimizing your setup, check out our in-depth guide on AC Infinity kits.
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Questions About This Product?
Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)
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