4iE Smart Thermostat

The 4iE is a Smart heating thermostat that works with your smartphone to give you optimal, cost-effective and energy-efficient heating. For use with both electric and water underfloor heating systems, 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, for you. It is compatible with baseboards, wall heaters and fan-forced air. Two options are offered, with and without WiFi.

Your Smart Underfloor Heating Thermostat
Easy to use and fully compatible with Warmup’s electric and hydronic floor heating systems, 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 radiators 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 Heating Control Features
Warmup’s 4iE Smart WiFi 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 and uploadable photo backgrounds, the 4iE is available in Black or White. Coming soon: the Portrait orientation! (February 2019)
The 4iE functions best when used in conjunction with the Warmup MyHeating heating app for your smartphone.
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.
Alexa
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. Read the Press Release.
IFTTT connectivity
The 4iE underfloor heating thermostat is also compatible with other Smart devices in your home through the IFTTT platform, allowing communication between the WiFi underfloor heating controller and an Amazon Alexa for instance.
Electric Underfloor
Use the 4iE with Warmup electric underfloor systems up to 15A.
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 and hydronic underfloor heating systems up to 15A |
For lower voltage, or volt-free systems, a contactor must be used |