Cosy is a smart heating system that lets you control your heating and hot water from a mobile thermostat and from mobile devices...

Cosy (Heating only) To use Cosy you will need to have: a single or twin zone central heating system access to a mobile device a home broadban...

Cosy differs from other smart home heating devices as follows: It works in parallel with existing equipment so: You don’t have to remov...

The Cosy App is compatible with iPhone devices running iOS7 and above, including: iPhone 3GS iPhone 4   iPhone 4S iPhone 5 iPhone 5S...

We’re sorry that your Cosy smart heating system will no longer be operational from the end of April 2026. We understand that this is frustrating and wo...

The Cosy App for Android is compatible with mobile and tablet devices running Android 4.0.3 and above.

The Cosy Web app can be used for Windows Phone devices (there is currently no dedicated app) Known issues with Windows Phone OS V8.10.12400.899 Windows ...

Broadly speaking there are two types of hot water systems: Combi Boiler - Controls your central heating as required using a timer switch and only heats...

If you have just moved into a home and discovered that your heating is controlled by our smart thermostat Cosy, then it’s important to check that you have t...