HomeThermostats4iE Smart Thermostat

4iE Smart Thermostat

The 4iE is a Smart thermostat that works with you to provide an optimal, cost-effective and energy-efficient heating system. For use with electric underfloor heating systems and electric baseboard heat, the 4iE does not require programming and uses Warmup’s latest technologies to ensure your home is always at the desired temperature, at the right time.

Variations are offered: horizontal or portrait orientation, with or without WiFi, black or white.

from $249 RRP

Your Smart Underfloor Heating Thermostat

Easy to use and fully compatible with Warmup’s electric floor heating systems and electric baseboards, the 4iE Smart WiFi Thermostat saves you energy and money.

 An app-controlled WiFi underfloor heating thermostat

The 4iE is an app-controlled WiFi heating controller that maximizes the energy-efficiency of a floor heating system. Underfloor Heating is much more efficient in heating a home than traditional systems by running at lower temperatures to gently reach optimal warmth. Combining underfloor heating with the 4iE allows automatic, intuitive control of heating for a truly Smart home.

 Maximizes your home’s energy-efficiency

Making sure your home’s floor heating is gently warmed for when you need it and running at lower temperatures when you don’t, the 4iE and its SmartGeo* technology cuts down on energy wastage, thereby reducing your energy costs too. Using the 4iE alongside Warmup’s MyHeating app to view usage and cost graphs can save you up to 25% a year on your annual energy bills. The 4iE does not know your actual location, only how far away from home you are, and all data is kept secure and encrypted. (*WiFi version only)

Never come home to a cold house or overpay on your energy bills again.

Always at the right temperature

SmartGeo™ technology makes sure your home is automatically warm just as you arrive and running efficiently when you’re away. Only with WiFi version of the 4iE.

Easy to use

The 4iE’s heating controls are easy to use and it doesn’t require programming. The set-up can be completed within a few simple steps.

4iE smart thermostat forUnderfloor heating
Thermostat 4iE

4iE Smart thermostat Features

Warmup’s 4iE Smart Thermostat for underfloor heating is designed to look great in both modern and traditionally styled homes, with glass effect front faces and beveled chrome edges. Featuring a clear, full-color touchscreen that can be customized with different themes, the 4iE is available in Black or White, Horizontal or Portrait orientation, with or without WiFi.

4iE Smart WiFi special Features

The WiFi version of the 4iE Smart Thermostat offers special features such as SmartGeo™, the weather forecast, a changeable background picture. The 4iE Smart WiFi thermostat can be controlled via a phone, tablet, and desktop. To get started, make sure to download the MyHeating app from your app store. Here is what else comes with the WiFi version of the 4iE thermostat:

MyHeating App

The SmartGeo technology within 4iE’s partnered MyHeating app controls your heating automatically by knowing how far from home you are and warming your home in time for your arrival. This prevents energy wastage and can save you up to 25% on your energy bills.

Learn more about the MyHeating app here>>


The Warmup® 4iE Smart WiFi thermostat that you know and love is now compatible with Amazon Alexa in North America. With Amazon Alexa integration, controlling your floor heat is now easier than ever.

Learn more about the Alexa compatibility here>>

IFTTT connectivity

The 4iE underfloor heating thermostat is also compatible with other home automation systems like the IFTTT platform.

Learn more about the IFTTT compatibility here>>

Thermostat installation

Whether it is a 4iE thermostat with or without WiFi, you can use the unit to control Warmup electric underfloor systems up to 15 amps. Built-in 15A can be extended with RL-240-25A and RL-120-25A relays for an additional 25A load switching capability.

Please refer to the installation manual for more details >

4iE thermostat Vertical Portrait
Dimensions (H/W/D): 90 x 110 x 18mm
Sensors Air and floor/ambient (can be extended to 50m)
Installation depth 35 mm back box
IP rating IP33
Er-P Class IV
Guarantee 3 years
120V-240V Dual Voltage w/ built-in Class A GFCI
Compatible with Electric Floor Heating and Baseboard systems. Built-in 15A can be extended with RL-240-25A and RL-120-25A relays for an additional 25A load switching capability.
For lower voltage, or volt-free systems, a contactor must be used