AC Infinity 4" Automatic Duct Fan with Differential Pressure Switch - Inline Ventilation Booster Fan for HVAC, Industrial Exhaust & Air Duct Systems - Perfect for Grow Rooms, Greenhouses & Workshop Ventilation

Product DescriptionAn automatic booster fan designed to improve airflow delivery in longer ductwork for more effective heating or cooling in home or industrial settings. Features a highly intuitive differential pressure switch that senses changes in your ducting to automatically operate its on/off activation. It also allows for mounting in any direction, making it possible to direct airflow vertically, horizontally, or diagonally. The inline duct fan also features five speeds powered by PWM controls that can generate precise airflow levels. This, combined with its flexibility in installation, provides total ventilation control in extended ducting and other difficult-to-reach spaces.Automatic Pressure SensingThe fan pressure switch delivers automatic activation capabilities to boost your heating or cooling on-demand, eliminating the need for manual adjustments. This is achieved by detecting pressure change in your ducting and turning it on whenever your home appliance is on. The smart sensor also allows you to omnidirectionally mount the duct fan for enhanced airflow versatility in existing HVAC systems.Quiet and Energy Efficient DesignThe automatic duct fan features a next-gen EC motor that powers quiet and energy-efficient performance. This innovative motor is controlled with PWM technology to ensure smooth performance while minimizing heat and noise levels. Its mixed flow design gives this vent booster fan a high static pressure rating to enhance airflow in HVAC applications with restricted air movement. This includes industrial settings like manufacturing and processing plants, as well as home residential settings such as bathroom ventilation and central air and heating systems.

Inline duct fan for boosting airflow in ducting and vent systems to ensure heating or cooling delivery.

Automatically activates the ventilation fan by detecting pressure change to eliminate manual adjusting.

Differential pressure switch supports mounting in any position to improve directional airflow versatility.

Features five fan speed levels powered by the PWM-controlled EC motor for more precise ventilation.

Duct Size 4” | Dim 6.9 x 11.9 x 7.4 in. | Airflow 230 CFM | Noise 60 dBA | Bearings Dual Ball