AC Infinity
CLOUDLINE LITE A4 Quiet Inline Fan
Best quiet inline fan for efficient grow tent and closet ventilation.
The AC Infinity CLOUDLINE LITE A4 is a 4-inch inline fan engineered for quiet and efficient air circulation. Delivering 165 CFM of airflow, it's perfect for ventilating grow tents, managing odors, or cooling AV closets. Its mixed-flow design and EC-powered motor with PWM control ensure optimal performance. The fan includes a 10-speed wired controller and features dual ball bearings for longevity. Integrated into the UIS platform, it offers advanced environmental control capabilities for various settings.
$79.99
Owner Satisfaction
4.6
/ 5
Category Rank
68
/ 347
#68 in Ventilation Fans
Price vs Category Average
-66%
Below average
Duct Size
4
/ inches
Who it's for
- Budget-conscious buyers seeking reliable performance and brand quality
- Homeowners needing quiet ventilation for living spaces
- DIYers wanting a quick and simple installation process
Who should skip it
- Energy-conscious users prioritizing long-term electricity savings
- Automation enthusiasts requiring precise, programmable airflow control
- Industrial users needing heavy-duty equipment for harsh environments
Performance breakdown
Acoustic Performance
Whisper-quiet operation makes it ideal for stealthy indoor grow environments.
Airflow Efficiency
Mixed-flow design delivers impressive CFM output despite its compact footprint.
Smart Integration
Seamless UIS platform connectivity offers advanced automation for precise environmental control.
Build Durability
Dual ball bearings and IP44 rating ensure long-term reliability in harsh conditions.
Ease of Maintenance
Detachable motor box simplifies cleaning and routine upkeep for busy users.
Control Precision
Ten-speed wired controller provides granular adjustments for tailored airflow management.
Key Specs
Duct Size
4 inches
Dimensions
6.9 x 11.9 x 7.4 in.
Airflow Capacity
165 CFM
Noise Level
29 dBA
Motor Type
EC-powered with PWM control
Bearings
Dual Ball (67,000 hours rated)
Ingress Protection Rating
IP44
Control
Wired 10-speed controller included
Features
- Quiet and energy-efficient mixed flow design
- High static pressure for restricted airflow
- Detachable motor box for easy cleaning
- IP44 rated for harsh environments
- Compatible with UIS smart controllers
- Plastic mounting base minimizes noise
- Backup memory for speed settings
- Durable dual ball bearings
What customers say
Users praise the CLOUDLINE LITE A4 for its remarkable quiet operation, a significant comfort for use in smaller areas. Setup is simple, making the fan easy to use immediately. The prevailing theme is excellent value. This fan provides AC Infinity's characteristic low noise and dependable performance. It is an effective and budget friendly choice for essential ventilation requirements, offering a quiet and reliable solution.
Know before you buy
The fan operates at a noise level of 29 dBA, which is comparable to a quiet whisper. Its mixed-flow design and plastic mounting base are specifically engineered to minimize vibration and noise, making it suitable for spaces where silence is a priority.
Yes, the CLOUDLINE LITE A4 is IP44 rated, meaning it is protected against splashing water and dust. This makes it a durable choice for grow tents or other environments where moisture and humidity are common.
Yes, the fan is integrated into the AC Infinity UIS platform. While it comes with a manual 10-speed wired controller, you can connect it to compatible UIS smart controllers to unlock advanced environmental automation and scheduling.
Yes, the unit features backup memory. If power is interrupted, the fan will automatically resume at the last speed setting once power is restored.
The motor box is detachable, which allows you to easily remove it from the duct housing for cleaning or maintenance without having to disassemble your entire ventilation setup.
The fan utilizes dual ball bearings rated for 67,000 hours of operation. This design is chosen for its longevity and ability to withstand continuous use in demanding ventilation applications.
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