10 best4 Duct Fansof November 2025
112M consumers helped this year.
7% off
1
AC INFINITY CLOUDLINE S4, Quiet 4 In Inline Duct Fan with Speed Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics
AC INFINITY
9.8
2
Hon&Guan 4 Inch Inline Booster Duct Fan with Speed Controller - 130 CFM Airflow with 6W Ultra-Low Power and Low Noise
Hon&Guan
9.6
3
VIVOSUN AeroZesh G4 4-inch 195 CFM Inline Duct Fan with E12 Speed Controller, Entirely Programmable PWM-Controlled EC Fan for Grow Tent Ventilation
VIVOSUN
9.5
4
Hon&Guan Air Filtration Kit 4 inch 100CFM Inline Duct Fan with 4 x 10 Carbon Filter Odor Control System and 2 Black Dryer Vent Hose for Hydroponics Indoor Grwo Tent, Planting Room, Air Circulation
Hon&Guan
9.3
5
Hon&Guan 4" x 8FT Aluminum Foil Insulated Flexible Duct, Dryer Vent Hose for HVAC Ventilation and Duct Fan Systems, 2 Clamps Include.
Hon&Guan
9.0
OtherUp to 12% off
VIVOSUN Inline Booster Duct Fan 4” 106 CFM with Speed Controller, HVAC Exhaust Ventilation Fan with Low Noise for Basements, Bathrooms, Kitchens, Attics, Grow Tents
VIVOSUN D4 4 Inch 195 CFM Inline Duct Ventilation Fan HVAC Vent Blower for Hydroponics Grow Tent
VIVOSUN AeroZesh S4 4-inch 208 CFM Inline Duct Fan with E12 Speed Controller, Entirely Programmable PWM-Controlled EC Fan for Grow Tent Ventilation
VEVOR Register Booster Fan, Quiet Vent Booster Fan Fits 4” x 10” Register Holes, with Remote Control and Thermostat Control, Adjustable Speed for Heating Cooling Smart Vent, White
6
AC Infinity Automatic Duct Fan 4", Inline Fan with Differential Fan Pressure Switch, Air Vent Booster Fan for Industrial HVAC Ducting Ventilation Exhaust Systems
AC INFINITY
8.8
7
Howeall Super Quiet Register Booster Fan 4" x 10" - Intelligent Thermostat Control Vent Fan Booster - Cooling Heating Smart Register Vent - White
Howeall
8.6
8
VIVOSUN Ventilation Kit 4 Inch 190 CFM Inline Fan with Speed Controller, 4 Inch Carbon Filter and 8 Feet of Ducting for Grow Tent
VIVOSUN
8.4
10% off
9
VIVOSUN T4 4 Inch 190 CFM Inline Duct Ventilation Fan with Variable Speed Controller for Grow Tent
VIVOSUN
8.1
10
VIVOSUN 4 Inch Inline Duct Fan 100 CFM, HVAC Exhaust Ventilation Fan with Low Noise for Basements, Bathrooms, Kitchens and Attics, Silver
VIVOSUN
7.9
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