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OnBuy.com£153.50Visit shop Ac Infinity Automatic Duct Fan 4 Inline Fan With Differential Fan Pressure Switch Air Vent Booster Fan For Industrial Hvac D 819137023789
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The AC Infinity Automatic Duct Booster Fan (AC-BFP4) is engineered for homeowners and professionals looking to improve airflow delivery in extended HVAC ductwork. It provides the key benefit of balancing room temperatures through automated operation, though users should note that the differential pressure switch requires adequate airflow pressure to trigger consistently in larger or extremely long systems.
| Model Part Number | AC-BFP4 |
|---|---|
| Brand | AC Infinity |
Yes, the AC-BFP4 is designed for universal mounting and can be installed vertically, horizontally, or diagonally.
It is compatible with standard 4-inch residential and industrial ducting systems.
The fan features five distinct speed settings powered by PWM controls.
No, the built-in differential pressure switch detects airflow from your HVAC system and turns the fan on and off automatically.
This unit is designed for HVAC air boosting and should not be used in environments with grease, heavy debris, or high moisture.
Check if your main HVAC system is running and ensure the pressure in the duct is sufficient to trip the differential switch.
Inspect the fan blades for any obstructions or dust buildup, and ensure the housing is mounted securely to prevent vibration.
Installation of the AC-BFP4 involves cutting a section of your 4-inch ductwork and securing the fan using standard duct clamps or foil tape. Ensure that the direction of the airflow indicated on the fan housing matches the direction of your system's airflow. Since it is designed for 4-inch ducts, it is directly compatible with most residential ducting kits. For maintenance, periodically inspect the fan blades for dust buildup, which can reduce efficiency. Ensure the power cable is routed safely away from sharp edges and is connected to a stable power source. Because the device is an automatic unit, test the pressure switch sensitivity during setup to ensure your primary HVAC system generates enough force to trigger the sensor.
