The world's largest supplier of underfloor heating

Warmup 4iE Smart WiFi Thermostat - Bright Porcelain

Warmup 4iE Smart WiFi Thermostat - Bright Porcelain

Out of stock

Controlled from a smartphone, tablet or computer, the 4iE™ Smart WiFi thermostat learns how you use your heating and the unique way your house reacts. It automatically suggests ways for you to save energy, like what temperature you should set for when you’re not home and times you can turn the heating off early.

The smart ways the 4iE™ finds to heat your home more efficiently could save you up to £200 on the average UK energy bill.

Warmup are independent from the energy suppliers so the 4iE™ also works in the background to find better energy tariffs for you, which could save you up to £380 in addition to the savings you get from your lower energy usage.

Energy saving advice

The 4iE™ finds you lower energy tariffs and smart ways to lower your usage. You can view your energy costs with graphical displays and comparisons

Smartphone control

Use your smartphone, tablet or computer to control your heating online. Smart Overrides™ give quick, intuitive control of your heating. No need to reprogram if your routine changes

Learning mode

You can set the 4iE™ to learn how you use your heating and it will program itself, adjusting start times based on current temperatures to ensure your home is up to temperature at the right time


Get apps on your 4iE™ like traffic alerts and transport delays for your journey. Even upload a photo background to personalise your profile.

Separate the front housing of thermostat from wall module:

  1. Unscrew both closing screws (bottom of stat) until they will not turn any further.
  2. Release front housing by gripping lower half of outer frame and pulling outwards then upwards
  3. Place front housing somewhere safe
  4. Run all wires to the wall box. Check to ensure that you have included the following:

    • Power (Live and Neutral)
    • Heater (Live and Neutral or Switch Live only)
    • Floor sensor
    • Fil pilote (if necessary)
    • External/ 2nd floor Sensor (if necessary)
  5. Pull wires through wall box and complete terminal wiring.

IMPORTANT: Ensure that multi stranded wires are fully inserted into the terminals and secured tightly. Any loose strands should be trimmed as they could cause a short-circuit.

If connecting more than two heaters, an electrical junction box will be required.

NOTE: Always ensure that the sensor cable is installed in a separate conduit to the power cables supplying the thermostat and heating system.

Input Voltage230V +/- 15% at 50Hz
Max Output16A
Dimensions(H/W/D):90 x 110 x 18mm
(requires 35mm deep backbox)
Screen3.5″ full colour touch screen
SensorsSupplied wtih NTC 10K floor probe (3m) & in-built air sensor
ProgrammingUp to 5 comfort periods per day, with any combination of days
IP ratingIP33
Guarantee3 years

In event of power failure, 4iE™ will download all settings from internet when power is returned

Delivery options

Our delivery costs vary according to order size and location. For more information see our Delivery page.

As standard we include FREE 2 - 3 working day delivery to all UK mainland addresses (excluding, Channel Islands & Eire) on all heating products.

All orders placed after 3pm on a Friday and at the weekend will be processed on Monday and placed on next working day delivery

Please note: orders must be placed before 3pm to be eligible for our Next Working Day, Next Working Day Before 10:30am and Saturday delivery options.