AC Infinity CLOUDLINE PRO S12 12" Inline Duct Fan — 1604 CFM Quiet, PWM EC Motor

The AC Infinity CLOUDLINE PRO S12 is a quiet, high-performance 12-inch inline duct fan that delivers up to 1604 CFM for ventilation, cooling, and odor control in grow rooms, AV closets, and HVAC transfer applications.

Built for demanding environments where airflow, noise level, and energy efficiency matter, the CLOUDLINE PRO S12 combines a PWM-controlled EC motor, mixed-flow impeller design, and a wired 10-speed controller to give you precise ventilation control without overwhelming sound or heat. Its mixed-flow stator blade geometry and hydrodynamic wind circles enable steady airflow even against resistance, while dual ball bearings increase motor longevity. This model is sized for large duct runs and spaces that need robust air exchange without bulky sound output.

How much airflow and sound should I expect from the S12?

The S12 moves up to 1604 cubic feet per minute (CFM) while operating at a rated noise level of about 62 dBA. That makes it suitable for large rooms and long duct runs where you need strong airflow but prefer lower motor noise compared with traditional centrifugal fans.

• Maximum airflow: 1604 CFM for heavy-duty air exchange
• Rated noise: approximately 62 dBA at full speed
• Duct compatibility: 12" duct openings for standard large-duct systems
• Motor bearings: dual ball bearings for reduced friction and longer life

What makes the motor and fan design energy-efficient and quiet?

The CLOUDLINE PRO S12 uses an EC (electronically commutated) motor with PWM control that reduces power draw while maintaining torque, producing less heat and hum than AC motors. The mixed-flow impeller and stator blades smooth airflow through the housing, minimizing turbulence and delivering efficient performance in moderate to high static pressure situations.

• PWM-controlled EC motor for precise speed and lower energy use
• Mixed-flow design for consistent airflow under resistance
• Hydrodynamic wind circles to reduce turbulence and noise
• Lower motor heat helps maintain stable operation in enclosed spaces

How do I control and integrate the S12 in my setup?

Out of the box the S12 includes a wired 10-speed fan controller for straightforward manual adjustment across multiple presets. It also works with AC Infinity's UIS controllers, allowing intelligent programming, timers, and temperature or humidity-based automation when you add compatible controllers.

• Included: wired 10-speed controller for immediate use
• Compatible with UIS controllers for automated control
• Supports speed programming, schedules, and sensor-based triggers
• Simple wiring and mounting options for retrofit or new installs

What are the physical specs and where does it perform best?

The S12 fits 12-inch ducting and measures roughly 14.9 x 17.7 x 14.1 inches, making it a compact solution for powerful ventilation needs. It performs best in hydroponic grow rooms, larger exhaust runs, AV or server closets, and any application requiring high CFM with relatively quiet operation.

• Duct size: 12" standard connection
• Dimensions: 14.9 x 17.7 x 14.1 inches for flexible placement
• Applications: grow rooms, AV closets, HVAC transfer, odor exhaust
• Noise-performance balance tailored to enclosed spaces

Who is this for: The AC Infinity CLOUDLINE PRO S12 is aimed at growers, AV professionals, and HVAC installers who need strong, reliable ventilation without excessive noise or energy waste. Choose the S12 when you require a high-CFM inline fan that integrates with manual or smart controllers, fits 12-inch duct systems, and operates steadily under resistance—ideal for large grow tents, server racks, or rooms that demand continuous air exchange.