HomeThermostatsSmart4iE for Underfloor Heating

4iE Smart Wifi Thermostat


The 4iE does not require programming. 4iE works with a smartphone to ensure your home is always at the desired temperature just as you arrive and using more efficient temperatures when you’re away.

Guide Price
from £181.66 RRP  ex. VAT

4ie underfloor heating thermostat mobile wifi
4ie underfloor heating control smarthphone

The 4iE can find lower energy tariffs and automatically switch to the best deal. According to DECC, switching energy tariff can save on average £210 per year.

SmartGeo works by using the location services built into smartphones, as well as learning your routines and the most efficient settings for your home, reducing the heating usage by up to 25%.

This leads to combined savings of up to £378 on your energy bills.

Your heating is always at the right temperature, effortlessly. The 4iE controlling the heating your home is automatically warm when you arrive and running efficiently when you’re away.

4ie underfloor heating control smarthphone

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

Always at the right temperature

SmartGeo™ makes sure your home is automatically warm just as you arrive, and running efficiently when you’re away, just like magic.

Always on the best tariff

With the EasySwitch™ automatic tariff switching service means that you will never have to overpay on energy bills again.

Simple to set up and easy to use

The 4iE is easy to use and doesn’t require programming. It connects to your WiFi easily, and set-up can be completed with a few simple steps.

warmup 4ie side
warmup 4ie side

High Quality Design & Engineering 

touch screen thermostat gif animation

The 4iE is designed to look great in both modern and traditionally styled homes, with glass effect front faces and bevelled chrome edges to reflect wall colours.

A range of vinyl overlays are available in bold colours and textured metal and wood effects. You can even use a custom photo to complement your wallpaper.

The large colour touchscreen can be customised with different themes and uploadable photo backgrounds. There’s even a 7 day local weather forecast, and traffic alerts built in to receive notifications from the SmartGeo feature in case you are stuck in traffic so the 4iE knows not to start warming your home too early.

For Underfloor Heating

Electric Underfloor

Use the 4iE with Warmup electric underfloor systems up to 16A

Hydronic Underfloor

The 4iE works perfectly with Warmup hydronic underfloor heating systems


(H/W/D): 90 x 110 x 18mm


Air and floor/ambient (can be extended to 50m)

Installation depth

35 mm back box

IP rating


Er-P Class



3 years with Extended Lifetime Warranty available
*Upgrade for just £29.99 inc. VAT
The 4iE requires 230VAC power at all times
Compatible with electric and hydronic underfloor heating systems up to 16A
Compatible with Combi and System boilers with Switch Live (230VAC) input
For lower voltage, or volt-free systems, a contactor must be used

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