Fan Coil Unit ECM Motor & Control Solutions

Why ECM Motors for Fan Coil Units?

Fan coil units operate across changing cooling and heating loads throughout the day. ECM / BLDC motor technology enables variable-speed airflow, lower noise and improved part-load efficiency compared with traditional fixed-speed motor solutions.

Instead of operating at one fixed speed, ECM motors can adjust airflow according to room demand. Combined with a matched blower and external driver, the motor can be configured around the FCU’s airflow, noise and control requirements — supporting efficient part-load operation and flexible integration with thermostats, BMS and building control systems.

Variable-Speed Airflow

Adjust fan speed according to room load and airflow requirements.

Lower Noise at Part Load

Reduce unnecessary fan speed during low-load operation for quieter room environments.

Higher Part-Load Efficiency

Reduce motor energy use when full airflow is not required.

Flexible HVAC Control

Support multiple speed settings, 0–10V and communication options through the external driver and control system.

ECM VS PSC IN FAN COIL APPLICATIONS

ECM vs PSC for Fan Coil Units

ECM motors are a better fit for modern fan coil units, offering higher efficiency, flexible speed control and easier system integration.

Feature	PSC Motor	ECM Motor
Speed Control	Fixed speed taps	Multi-speed / variable speed
Airflow Control	Limited	Flexible
Part-Load Operation	Conventional	Better suited to variable airflow
Control Integration	Basic speed control	3-Speed / 0–10V / RS485 / Modbus*
OEM Configuration	Limited	Motor + driver + firmware
Best Suited For	Fixed / simple airflow applications	Variable-speed & control-integrated FCUs

Energy saving comparison between AC PSC and ECM motors, showing up to 70 percent energy savings and 61.8 tonnes of annual carbon reduction for 300 fan coil units

Integrated HVAC control solution combining an ECM motor, motor driver board, thermostat and 24GHz presence sensor

Why an External Driver?

Separating the motor and driver gives HVAC OEMs greater flexibility in system design, thermal management, maintenance and motor selection.

More Flexibility
for HVAC Innovation

Faster Customization

Adapt driver hardware, firmware and control interfaces without necessarily redesigning the motor.

Fewer Motor Variants

Support different HVAC control requirements with a common motor platform and matched driver options.

Easier Service & Replacement

Separate motor and driver components allow more flexible maintenance and replacement strategies.

Better Thermal Separation

Position the driver away from motor heat and vibration for improved thermal management and system integration.

TECHNOLOGY SPOTLIGHT

Sensorless Control. External Driver Flexibility.

Our sensorless motor driver solutions support Hall-sensor-free BLDC motor operation, with motor-specific tuning and configurable control options.

No Hall Sensors Required

Sensorless commutation eliminates the need for Hall sensor feedback from the motor.

Motor-Specific Tuning

Driver parameters and firmware can be optimized for motor characteristics and application requirements.

Control Interface Options

Depending on the driver model, available interfaces include 3-speed, 0–10V and RS485 control.

TACICON sensorless external motor driver board

One Motor Platform.
More Possibilities.

TACICON brings together ECM motors, impellers, blower assemblies, external drivers and HVAC controls to support OEM system integration.

Explore Motor & Driver Solutions

Motor & Air System

Drive & Control

ECM Motor

10–750W (1 HP)Custom Motor Configurations

Impeller / Blower

Centrifugal · Axial · Cross-FlowAirflow & Static Pressure Matching

M5 ECM motor driver board, front view with a large capacitor and green screw terminals

External Motor Driver

3 Speed · 0–10V · Modbus · PWMCustom Hardware & Firmware

Thermostat / Control

Temperature · Fan · ValveCompressor Control

A Matched HVAC Motor & Control Solution

Engineered to Match Your Application

ECM Motor Driver Control Interfaces

TACICON offers flexible speed-control and communication interfaces for FCU applications, depending on the selected external driver board and configuration.

3-Speed Control

Low, medium and high speed selection.

0–10V Control

Variable motor speed through analog input.

PWM Control

Motor speed adjustment through PWM input.

RS485 / Modbus

Digital speed commands and parameter communication.

BACnet Integration

Building automation connectivity via compatible interfaces.

Fan Coil Configurations We Support

ECM motor solutions for different types of fan coil units, meeting various installation and performance requirements.

Concealed Ducted FCUs

Horizontal FCU
Vertical FCU
Wall-Mounted FCU

Vertical & Cabinet FCUs

Vertical FCU
Floor-Mounted FCU

Cassette FCUs

4-Way Cassette FCU
2-Way Cassette FCU
1-Way Cassette FCU

High-Static Ducted FCUs

Horizontal High-Static FCU
Vertical High-Static FCU

From Application Requirements
to Engineering Solutions

We work with fan coil OEMs to match the motor, external driver and control configuration to specific FCU requirements.

Custom Engineering Process

Application Requirements
FCU Type · Airflow · Blower
Motor Selection & Engineering
RPM · Torque · Power / Shaft · Mounting Dimensions
Driver & Control Development
3-Speed · 0–10V · Modbus · BACnet
Firmware & Motor Tuning
Motor Parameters · Control Logic
Prototype & Validation
Airflow · Performance · Installation Fit
Mass Production
Approved Configuration

Technical FAQ

What types of fan coil units can your ECM motors be used in?

Our ECM motor solutions can be developed for concealed ducted, vertical and cabinet, cassette, and high-static ducted fan coil units. Motor selection depends on the fan structure, airflow, external static pressure, installation space and control requirements.

How do you select the right ECM motor for a fan coil unit?

We normally evaluate the required airflow (CFM), external static pressure (ESP), fan or blower type, target RPM, torque, voltage, mounting dimensions and control method before selecting or developing the motor and driver solution.

Can you replace an existing fan coil motor with your ECM motor?

Yes. For OEM replacement projects, you can provide the existing motor model, nameplate, drawing or datasheet together with the fan coil operating requirements. We evaluate both mechanical compatibility and required motor performance rather than matching only voltage and wattage.

Can you convert a PSC fan coil motor to ECM?

Yes. PSC-to-ECM conversion can be developed by evaluating the existing fan coil, blower, airflow and static pressure requirements, motor mounting and control system. The ECM motor and driver are then matched to the application.

What control options are available for fan coil applications?

Depending on the driver configuration, control options can include 0–10V, multi-speed control and RS485/Modbus. The control interface can be configured according to the fan coil controller or thermostat requirements.

Can the motor shaft and mounting be customized for our fan coil design?

Yes. Shaft dimensions, mounting structure and other mechanical interfaces can be customized or matched to the existing fan coil design, subject to engineering evaluation.

Do you provide the external driver board together with the ECM motor?

Yes. Our ECM motor platform uses an external motor driver architecture. The motor, driver board and control configuration can be matched as a system according to the fan coil application.

What information should we provide to start an FCU motor project?

Please send the available fan coil specifications, airflow and ESP requirements, existing motor nameplate/drawing, blower information, voltage, control method and mechanical dimensions. If some information is unavailable, we can review the available data first and identify what is still required.

LET’S BUILD A SMARTER HVAC SOLUTION TOGETHER

Have an HVAC Motor or Control Project?

Send us your application requirements, motor specifications, drawings or control requirements.

START YOUR PROJECT →Or Send an EnquiryHello@tacicon.com

Fan Coil Units

ECM Motor, Blower & Control Solutions