A fan speed controller lets a fan run at the airflow the room needs instead of flat out. This page holds twelve single-phase controls: electronic speed controllers from 1 A to 10 A, two- and three-speed selector switches, and a humidistat with timer.
Soler & Palau COM-2 two-speed fan switch with ON/OFF and I / II speed control. Ideal for managing airflow in residential, commercial or industrial ventilation systems.
Soler & Palau COM-3 three-speed fan switch with ON/OFF and speed selection. Ideal for controlling airflow in TD-Silent, TD-Mixvent and other three-speed ventilation systems.
Soler & Palau HIG-2 humidistat with adjustable 60–90% RH control and timer. Enables the automatic ON/OFF operation of an extract fan by monitoring the relative humidity level.
Soler & Palau INTER 4P ON/OFF and three-speed fan switch for airflow control. Ideal for three-speed ventilation systems. Reliable and easy to use. With rotary switch.
Soler & Palau REB-1 N electronic single-phase fan speed controller designed for wall-mount. Featuring a single rotary knob for ON/OFF and speed adjustment. Minimum speed adjustment and fuse protection, it offers a reliable and efficient solution for controlling fan airflow in residential and commercial ventilation systems.
Soler & Palau REB-1 NE electronic single-phase fan speed controller designed for flush mounting in a standard recessed wall box. Equipped with a single ON/OFF and speed adjustment knob. Minimum speed calibration and fuse protection, it provides a simple and efficient way to regulate fan airflow in residential and commercial ventilation systems. Rotary switch.
Soler & Palau REB-10 is a surface-mounted single-phase fan speed controller designed for precise and energy-efficient airflow regulation. Featuring a separate ON/OFF switch, minimum speed adjustment and fuse protection, it ensures safe and reliable operation in residential, commercial and industrial ventilation systems.
Soler & Palau REB-2.5 N surface-mounted electronic single-phase fan speed controller for smooth variable speed adjustment and ON/OFF control. Features rotary speed adjustment and minimum speed calibration for reliable residential and commercial ventilation systems.
The Soler & Palau REB-2.5 NE is a flush-mounted electronic single-phase fan speed controller designed for installation in a standard in-wall electrical box. Equipped with a single rotary knob for ON/OFF switching and smooth speed adjustment, it includes a minimum speed calibration feature that ensures accurate, stable and energy-efficient control of fan motor speed in residential and commercial ventilation systems.
Soler & Palau REB-5 is a surface-mounted single-phase fan speed selector designed for precise and energy-efficient airflow regulation. Featuring a separate ON/OFF switch, minimum speed adjustment and fuse protection, it ensures safe and reliable operation in residential, commercial and industrial ventilation systems.
Soler & Palau REB-ECOWATT is an intelligent single-phase fan speed controller designed for both manual and remote speed adjustment. Ideal for demand-controlled ventilation, it ensures precise airflow regulation, improved energy efficiency and full compatibility with Soler & Palau EC fan models, including TD-ECOWATT and TD-SILENT ECOWATT.
Soler & Palau REGUL-2 switch for ON/OFF and airflow control and adjustment. Electrical accessories, ideal for two-speed fans. Easy and reliable operation.
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Fan speed controllers & switches12 productsWhich control does your fan need?
Start with the fan, not with the control. Read two things on the fan's rating plate: the rated current in amps, and the motor type. The motor type decides the kind of control. The current decides its size.
| Your fan | Control to use | In this range |
|---|---|---|
| Single-speed AC motor, marked speed-controllable | Electronic speed controller | 1 A, 2.5 A, 5 A, 10 A |
| Two or three fixed speeds | Speed selector switch | 2-speed and 3-speed, up to 4 A |
| EC motor | Controller for EC fans | One model, with remote control input |
| Any fan that should react to moisture | Humidistat with timer | One model, up to 6 A |
Electronic speed controllers
Seven controllers with smooth speed adjustment by a rotary knob. Every one has on/off switching and a minimum-speed setting, so the fan cannot be turned down to a point where the motor stalls.
Choose the rating above the fan's rated current, never below it. The 1 A and 2.5 A sizes come in two versions: flush-mounted for a standard in-wall box, and surface-mounted with their own wall box. The 5 A and 10 A sizes are surface-mounted. Surface-mounted versions are rated IP44, and the 10 A size is IP54.
Speed selector switches
Four switches for fans built with two or three fixed speeds. The switch does not vary the voltage. It selects one of the speeds the motor already has, and turns the fan on and off. Two models are two-speed and two are three-speed.
Humidistat with timer
One wall-mounted humidistat for a fan that has no sensor of its own. It starts the fan when relative humidity passes the set point, adjustable from 60 to 90 %, and the timer keeps the fan running after the level has dropped. Fans with the sensor already built in are on the extractor fans with humidistat page.
Common questions
What size fan speed controller do I need?
Take the rated current from the fan's rating plate and choose the next controller size above it. A fan drawing 0.4 A takes the 1 A controller. A fan drawing 1.8 A takes the 2.5 A controller.
Can any fan be speed controlled?
No. The fan must be marked as speed-controllable by the manufacturer. A fan with fixed speeds takes a selector switch, and a fan with an EC motor takes the controller made for EC fans.
Can one controller run two fans?
Yes, when both fans are the same type and their rated currents added together stay below the controller rating. Both fans then run at the same speed.
Is a fan speed controller worth it?
It is when the fan is sized for the worst case. An in-line fan chosen for a full kitchen or a long duct run is louder than needed most of the day. Turned down, it moves less air, makes less noise and uses less power.
