AC Infinity
CLOUDLINE S8 Inline Duct Fan 8"
Best high-performance ventilation for indoor growers and climate control enthusiasts.
The AC Infinity CLOUDLINE S8 is a powerful 8-inch inline duct fan designed for efficient and quiet air management. Its mixed-flow design and PWM-controlled EC motor ensure strong airflow, even in high static pressure situations, making it ideal for grow rooms, HVAC boosting, or cooling AV closets. This fan features an intelligent controller with advanced programming and 10 speed settings for optimal performance. Built with durable dual ball bearings and an IP44 rating, it guarantees reliable, low-noise operation for demanding environments.
$129.99
Owner Satisfaction
4.9
/ 5
Category Rank
1
/ 347
Best Ventilation Fans
Price vs Category Average
-45%
Below average
Duct Size
8
/ ”
Who it's for
- Homeowners needing quiet ventilation for living or sleeping spaces
- Budget-conscious growers prioritizing long-term energy efficiency
- Users requiring manual, consistent control over airflow intensity
Who should skip it
- Installers working within cramped or limited ventilation spaces
- Shoppers restricted by a tight initial equipment budget
- Automated climate control seekers needing smart sensor integration
Performance breakdown
Airflow Efficiency
Mixed-flow design delivers impressive CFM output even against high static pressure.
Acoustic Performance
Whisper-quiet operation ensures minimal disruption in sensitive home or grow environments.
Control Precision
Ten distinct speed settings offer granular command over your ventilation needs.
Build Durability
Dual ball bearings and IP44 rating guarantee long-term, reliable mechanical performance.
Smart Integration
Seamlessly connects with the UIS platform for advanced, automated climate management.
Maintenance Ease
Detachable motor housing makes routine cleaning and upkeep remarkably straightforward.
Key Specs
Duct Size
8”
Airflow
402 CFM
Noise Level
32 dBA
Motor Type
EC-motor with PWM-control
Bearing Type
Dual Ball Bearings (67,000 hours rating)
IP Rating
IP44
Dimensions
7.9 x 12.6 x 8.4 in
Weight
11.24 lbs
Features
- Smart mixed-flow design for high static pressure.
- Quiet and energy-efficient EC motor.
- Intelligent controller with advanced programming.
- 10 precise speed levels for airflow control.
- Detachable motor for easy cleaning.
- Dual ball bearings for versatile mounting.
- Integrates with UIS™ smart grow platform.
What customers say
Consumers are overwhelmingly impressed by the CLOUDLINE S8's superior quality and whisper quiet operation. The EC motor technology delivers powerful, consistent airflow while maintaining remarkably low noise levels, a critical feature for continuous use. Users frequently highlight the robust build and the reliability of the smart controller. This fan performs exactly as advertised, establishing AC Infinity as the benchmark for durable, high performance ventilation solutions.
Know before you buy
Yes, thanks to the dual ball bearings, the CLOUDLINE S8 can be mounted in any position, including horizontally or vertically, without affecting the motor's lifespan or performance.
The fan is rated at 32 dBA. While this is exceptionally quiet for an 8-inch fan moving 402 CFM, you will notice a soft hum at the highest speed setting, which is significantly quieter than standard AC-powered fans.
The included intelligent controller is wired to the fan unit. This ensures a stable, interference-free connection for precise PWM speed control and advanced programming.
The IP44 rating means the fan is protected against solid objects larger than 1mm and splashing water from any direction. While it is suitable for humid environments like grow tents or greenhouses, it is not designed for direct exposure to heavy rain or submersion.
Yes, the CLOUDLINE S8 is compatible with the UIS™ smart grow platform. You can daisy-chain it with other compatible AC Infinity devices to manage your entire environment from a single controller.
The motor assembly is detachable from the duct housing. This design allows you to easily remove the motor unit to wipe down the blades and housing without having to disconnect the entire ductwork system.
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Ready to buy?
$130