ShenZhen Toupwell Technology Co.,Ltd

Electric Underfloor Heating Thermostats

Toupwell manufactures electric underfloor heating thermostats for residential, commercial and smart-building heating-control projects.

Our thermostats are designed to control compatible electric floor heating cables, heating mats and other resistive heating loads. Available options include standard programmable thermostats, WiFi thermostats, Zigbee thermostats and Modbus thermostats.

Depending on the selected model, Toupwell electric floor heating thermostats can provide a 16A relay output, built-in room-temperature sensing, an external floor sensor, weekly scheduling, floor-temperature limitation, child lock, frost protection, open-window detection and power-off memory.

OEM and ODM services are available for HVAC distributors, electric floor heating brands, smart-home companies, importers and heating-system suppliers.

Available solutions include:

• Standard electric heating thermostats

• Programmable floor heating thermostats

• WiFi underfloor heating thermostats

• Zigbee electric heating thermostats

• Modbus floor heating thermostats

• Room and floor dual-sensor control

• 16A relay output options

• 95–240V AC and selected 24V configurations

• Touchscreen, LCD and LED display options

• Tuya and Smart Life app control

• Alexa and Google Home-compatible models

• OEM logo, housing, packaging and firmware customization

How Does an Electric Underfloor Heating Thermostat Work?

An electric underfloor heating thermostat measures the room temperature, floor temperature or both and switches the heating load according to the selected setpoint and control mode.

A typical operating sequence is:

1. The room or floor sensor measures the current temperature.

2. The thermostat compares it with the selected setpoint.

3. The internal relay switches the heating cable or mat on when heat is required.

4. The floor temperature rises and transfers heat into the room.

5. The thermostat switches the load off when the target or floor limit is reached.

6. The cycle repeats to maintain the required comfort level.

The thermostat must be matched to the heating-system voltage, total electrical load, floor sensor and installation requirements.

Room Sensor, Floor Sensor and Dual-Sensor Control

Sensor configuration is one of the most important differences between an ordinary room thermostat and a thermostat designed for electric floor heating.

Built-In Room Sensor

The internal air sensor measures the temperature around the thermostat.

Room-sensor control is useful when the objective is to maintain a stable indoor air temperature.

Its accuracy can be affected by installation conditions such as:

• Direct sunlight

• Exterior walls

• Drafts

• Nearby doors

• Heated pipes

• Electrical equipment

• Poor air circulation

• Installation too close to the floor

The thermostat should be installed in a representative location for the room.

External Floor Sensor

The external floor probe measures the temperature inside or beneath the floor construction.

It can be used to:

• Control the floor according to a target temperature

• Prevent excessive floor temperature

• Protect temperature-sensitive floor finishes

• Provide stable floor comfort

• Support bathroom and tiled-floor heating

The probe should normally be installed in a conduit so that replacement is possible without opening the finished floor.

Dual-Sensor Control

A dual-sensor thermostat uses both the internal room sensor and the external floor sensor.

In a typical combined mode:

• The room sensor controls indoor comfort.

• The floor sensor acts as a maximum or minimum limit.

• Heating stops when the floor limit is reached.

• The floor is protected even when the room still requires heat.

The correct floor-temperature limit depends on the floor construction, heating system and flooring manufacturer’s instructions.

How to Select an Smart Electric Underfloor Heating Thermostat

1. Confirm the Heating-System Voltage

Check whether the heating cable or mat uses:

• 110–120V

• 220–240V

• Another project-specific voltage

The thermostat power supply and output must match the heating system.

A model designed for European 230V electric heating should not automatically be assumed suitable for a North American 120V installation.

2. Calculate the Heating Load

Add the rated wattage of every heating mat or cable connected to the thermostat.

The load current can be estimated using:

Current = Total Heating Power ÷ Supply Voltage

For example, a 3,000W heating system operating at 230V draws approximately 13A.

The calculated current must remain below the thermostat’s rated resistive load and any limits required by the installation standard.

When the total heating load exceeds the thermostat rating, use a correctly selected external contactor, relay or power module rather than connecting the load directly.

3. Confirm the Sensor Requirement

Determine whether the installation requires:

• Room-temperature control

• Floor-temperature control

• Combined room and floor control

• Floor maximum limitation

• Floor minimum limitation

• Replacement of an existing sensor

For replacement projects, confirm the resistance value of the installed floor sensor. Different thermostat brands may use different NTC sensor values.

4. Check the Floor Covering

Different floor finishes tolerate different operating temperatures.

Common electric floor heating applications include:

• Ceramic tile

• Porcelain tile

• Natural stone

• Engineered wood

• Laminate

• Vinyl

• Carpet-compatible systems

The thermostat limit should follow the heating-system and floor-covering manufacturer’s requirements.

Do not use one universal maximum floor temperature for every material.

5. Choose the Control Method

Select the thermostat according to how the project will be operated.

6. Confirm the Wall-Box Dimensions

Toupwell models may be designed for compatible European round boxes or 86-type installation boxes.

Before ordering, confirm:

• Wall-box type

• Screw-hole distance

• Wall depth

• Cable space

• Faceplate dimensions

• Local installation practice

This is especially important for replacement projects and private-label products sold in several countries.

7. Confirm Safety and Certification Requirements

Requirements vary by market and application.

Before ordering, provide:

• Destination country

• Supply voltage

• Heating load

• Installation location

• Required certifications

• Ground-fault protection requirement

• Packaging and label requirements

• Importer or distributor information

For bathroom, wet-area and North American projects, confirm whether the installation requires integrated or external ground-fault protection.

A qualified electrician should determine the appropriate protective devices and wiring method.

16A Thermostat Load Selection

Selected Toupwell electric heating thermostats use a 16A relay for direct control of compatible resistive heating loads.

However, buyers should not select a thermostat based only on the “16A” label.

The installation must also consider:

• Continuous load

• Supply voltage

• Cable size

• Terminal capacity

• Circuit breaker

• Local derating requirements

• Relay inrush and switching conditions

• Ambient temperature

• Wall-box ventilation

• Number of heating cables

• External contactor requirements

When several heating mats serve the same room, calculate their combined load.

A thermostat should not be operated above its rated capacity.

Important Thermostat Functions

Weekly Programming

Weekly programming reduces unnecessary operation by using different temperatures for occupied and unoccupied periods.

Selected models support separate weekday, Saturday and Sunday programs with multiple time and temperature periods.

Floor-Temperature Limitation

Floor limitation stops heating when the floor sensor reaches the configured maximum.

This function is particularly important for temperature-sensitive floor materials.

Open-Window Detection

Open-window detection responds to a rapid reduction in room temperature and can temporarily reduce or stop heating.

Its performance depends on thermostat location, room conditions and the configured detection parameters.

Child Lock

Child lock prevents accidental changes to temperature, schedule and operating modes.

It is useful in:

• Family homes

• Hotels

• Schools

• Rental properties

• Public areas

• Commercial rooms

Frost Protection

Frost protection maintains a low minimum temperature when normal comfort heating is not required.

This can be useful for vacant rooms, holiday properties and seasonal buildings.

Power-Off Memory

Power-off memory retains configured settings after a temporary loss of electricity.

The exact stored information depends on the model and firmware.

Adjustable Display Brightness

Selected LCD, LED and TFT models provide adjustable brightness for bedrooms, hotel rooms and other light-sensitive spaces.

Temporary Temperature Override

A temporary override allows users to change the temperature during a programmed period without permanently deleting the weekly schedule.

Standard, WiFi, Zigbee and Modbus Comparison

The communication method should match the complete project architecture rather than being selected only because it is described as “smart.”

OEM and ODM Electric Underfloor Heating Controller

Toupwell provides OEM and ODM electric floor heating thermostat services for HVAC distributors, heating brands, importers, wholesalers and smart-home companies.

Available customization may include:

• Private-label logo

• Custom housing color

• Glass-panel design

• Display layout

• Button icons

• User-interface language

• Temperature range

• Weekly programming

• Floor-sensor value

• WiFi, Zigbee or Modbus communication

• Tuya or Smart Life configuration

• Firmware functions

• Hardware output

• Wall-box compatibility

• Packaging

• User manual

• Product labels

• Carton markings

Customization feasibility, MOQ and development time depend on the required changes.