AC Infinity Cloudline A4 Lite EC Fan 4"

Compact 4-Inch EC Inline Ventilation Fan with 10-Speed Controller

Maintaining reliable air exchange and temperature control in smaller grow tents (2×2 ft to 3×3 ft) doesn't require overspending on industrial equipment. The AC Infinity CLOUDLINE A4 brings the core engineering, mixed-flow airflow design, and EC motor efficiency of the flagship CLOUDLINE series into an ultra-value package. Delivering 165 CFM (280 m³/h) of air movement, the A4 easily pulls air through carbon filters while drawing an average of just 18 Watts.

Driven by a digitally controlled PWM EC motor, the A4 operates at a whisper-quiet 29 dBA, making it virtually silent in domestic spaces and home grows. The mixed-flow impeller and stator blades generate high static pressure (324 Pa) to overcome airflow resistance in ducting or tight bends. Complete with a 10-speed manual controller and a UIS™-to-Molex adapter dongle, the CLOUDLINE A4 connects seamlessly into smart control networks like CONTROLLER 69 for full app-based climate automation.

What Makes It Stand Out

• Ultra-Quiet 29 dBA Operation: Digital PWM EC motor technology eliminates buzz, humming, and vibration noise, even at maximum RPM (2800 RPM).
• High-Efficiency 165 CFM Airflow: Efficiently ventilates small grow tents, nursery setups, and drying cabinets up to 3×3 ft.
• High Static Pressure Mixed-Flow Impeller: Stator blades force air cleanly through duct runs, light baffles, and activated carbon filters.
• 10-Speed Manual Controller Included: Features precise speed selection with integrated backup memory that restores fan speed after power outages.
• UIS™ Ecosystem Ready: Includes a UIS adapter dongle to plug directly into smart controllers for Wi-Fi app triggers, scheduling, and VPD automation.
• Vibration-Damping Base & Easy Maintenance: Lightweight plastic mounting base absorbs vibration, while the central motor box detaches for quick cleaning without removing ductwork.
• 67,000-Hour Rated Industrial Lifespan: Dual ball bearing motor allows 360° horizontal or vertical mounting and carries an IP44 rating against dust and liquid splash.

Technical Specifications

Real-World Applications

• Small Grow Tents (2×2 ft to 3×3 ft): Primary exhaust fan for extraction, odor scrub, and heat management in compact propagation and bloom tents.
• Active Intake Booster: Pushes fresh, cool air into larger grow spaces to relieve static pressure load on main exhaust fans.
• A/V Equipment & Closet Ventilation: Quietly cools home theater cabinets, server racks, and media closets where fan noise must be non-existent.