Baldwin 4" x 10" Register Booster Fan 140 CFM 3600 RPM

Boosts HVAC Airflow to Problem Rooms

This 4" x 10" register booster fan mounts flush into standard floor or wall vents and delivers up to 140 CFM at 3600 RPM. It is designed for homeowners who need to push heated or cooled air into upstairs bedrooms, distant corners or other hard-to-reach spaces without modifying the central HVAC system. The unit runs on corded electric power and requires an existing forced-air duct opening.

Drop-In Installation With Smart Thermostat

The fan drops into the vent opening and uses a built-in temperature sensor to activate only when the HVAC system is moving air, so it adds no load during idle periods. No wiring, Wi-Fi or app setup is needed; the onboard controls and included remote handle speed, mode and timer adjustments. It frees the occupant from manually balancing registers or running portable heaters and fans in under-served rooms.

Quiet Dual Ball-Bearing Operation

Dual ball-bearing motors keep mechanical noise low enough for bedrooms and nurseries, and a display-off night mode removes light disturbance after dark. The fan draws power only while the HVAC blower runs, limiting overall electricity use to active heating or cooling cycles. Normal operation stays within the rated 140 CFM and 3600 RPM without additional cooling requirements.