AC Infinity Automatic Duct Booster Fan 4 Inch with Pressure Switch and Speed Controller
Product details
| Management number | 250625412 | Release Date | 2026/09/17 | List Price | US$39.60 | Model Number | 250625412 | ||
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This automatic 4-inch duct booster fan is engineered to improve airflow in long or restricted duct runs, ensuring better heating and cooling delivery throughout your space. Its differential pressure switch activates the fan automatically whenever your HVAC system turns on, eliminating manual adjustments.
The EC motor uses PWM control to deliver five precise speed levels for quieter and more energy-efficient performance. With flexible mounting options in any direction, this inline booster fan easily integrates into new or existing ventilation systems. Ideal for both residential and industrial ducting where additional airflow is needed.
Key features
• Automatically boosts airflow using a built-in differential pressure switch
• Five fan speed levels powered by an efficient PWM-controlled EC motor
• Mounts in any direction for versatile airflow optimization
• High static pressure design improves performance in long or restrictive ductwork
• Quiet, energy-efficient operation with long-life dual ball bearings
Applications
• HVAC ducting requiring improved heating or cooling delivery
• Long or restrictive duct runs in homes or commercial buildings
• Bathroom ventilation, central air systems, and room-to-room airflow
• Industrial ventilation in manufacturing or processing plants
• Spaces that need automated airflow without manual fan control
Product specifications
| Specification | Details |
|---|---|
| Manufacturer | AC Infinity Inc. |
| Product Name | Automatic Duct Fan 4" |
| Product Model | AC-BFP4 |
| UPC Code | 819137023789 |
| Duct Size | 4" |
| Total Dimensions | 11.88 x 9.11 x 9.25 in (30.2 x 23.2 x 23.5 cm) |
| Mounting Hole-to-Hole Distance | 3.15 x 2.36 in (8.0 x 6.0 cm) |
| Screw Hole Size | 0.197 in (0.5 cm) |
| Total Airflow | 230 CFM |
| Total Noise | 60 dBA |
| Max Speed | 3000 RPM |
| Static Pressure | 248 Pa |
| Pressure Detection Range | 0–100 Pa |
| Voltage | 100–240V AC |
| Frequency | 50/60Hz |
| Max Power Draw | 35 W |
| Current | 0.55 A |
| Power Connector Type | US Plug (NEMA 1-15 Type-A) |
| Operating Humidity | 35 to 85% RH |
| Operating Temperature | 32 to 140°F |
| Ingress Protection | IP44 |
| Fan Bearings | Dual Ball |
| Mounting Positions | Horizontal or Vertical |
| Life Expectancy | 67,000 hours |
What’s included
• Automatic duct booster fan 4"
• Integrated pressure switch
• Speed controller
• Mounting hardware
• Installation manual
Bestseller ranking
Ventilation Systems
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