4 Inch Auto Duct Booster Fan With Differential Pressure Switch For Industrial HVAC Ducting And Ventilation Exhaust Systems, Self Activates On Pressure Change To Boost Airflow Without Manual Adjustment
✔️ 1x 4” inline booster; 230 CFM, 60 dBA, 5 PWM speeds
This 4 inch inline duct booster fan is designed to boost airflow in longer duct runs for heating and cooling efficiency in both industrial HVAC systems and residential settings. Its differential pressure switch automatically activates the fan as duct pressure changes, removing the need for manual adjustments. It can be mounted in any direction, giving you flexible control over airflow direction and delivery.
✅ 4” duct size fits standard HVAC runs and installs easily✅ Airflow up to 230 CFM for strong boost
✅ Noise level around 60 dBA for relatively quiet operation
✅ Bearings: Dual Ball for durability and longevity
✅ PWM EC motor with 5 speeds for precise control
✅ Differential pressure switch auto activates on pressure change
✅ Dim: 6.9 x 11.9 x 7.4 in
💡 What is an inline duct booster fan with a differential pressure switch used for in HVAC systems? This handy device boosts airflow in long duct runs for better heating or cooling efficiency in homes and light industrial spaces. - How it helps extend airflow in duct networks - How the differential pressure switch auto activates the fan - Why PWM-controlled EC motor gives precise speed control - Where to mount it for best airflow in multiple directions