Homebridge plugin for Heatzy devices, considered as thermostats.

Heatzy uses the 'fil pilote' protocol to control an electric heater, with 4 states :

• Confort : temperature set on the heater
• Eco : temperature 3°C to 4°C below Confort
• Hors-gel : temperature set to ~7°C
• Off.

The switch from a state to another can be automated within the official application, by creating a schedule.

In this plugin, every Heatzy device is a thermostat, with these values :

• Off : Off
• Heat : Confort
• Cool : Eco
• Auto : Turn on the automation created in the app

If you set the device from the Home app, Off will set the heater to off, Heat to Confort, Cool to Eco and Auto will activate the last automation program that you used. If you set it from the Heatzy app, or from the hardware button, Confort will be displayed in the Home app as Heat, Eco as Cool and Prog as Auto. Any other state (Hors-Gel or Off) will be displayed as Off.

For the rest of the functionnalities of the thermostat in the Home app, everything is fake : a fake current temperature, target temperature and temperature unit, choosen in the config.json, is set by default, and will always stay the same. If you try to change the target temperature from the Home app, nothing will happened, as well as if you try to change the temperature unit from °C to °F.

Install or update this plugin using npm i -g homebridge-heatzy-as-thermostat.

Update the config.json file of your Homebridge setup, by modifying the sample configuration below.

The configuration parameters to enable your devices would need to be added to accessories section of the Homebridge configuration file. One block is necessary for each Heatzy device.

{
    ...
            "accessories": [
                {
                    "accessory": "HeatzyPilote",
                    "name": "Bedroom heater",
                    "username": "XXX",
                    "password": "XXX",
                    "did": "011233455677899abbcd",
                    "interval": 60,
                    "fake_temp": 20,
                    "temp_unit": "C",
                    "trace" : false
                }
            ]
    ...
}

• accessory is required, with HeatzyPilote value.
• name (required) is anything you'd like to use to identify this device. You can always change the name from within the Home app.
• username and password (required) are the credentials you use in the Heatzy app.
• did (required) is the parameter for your device. See below how to get it.
• interval (optional) is how often (in seconds) the plugin will ask Heatzy servers the state of your device, which is necessary when you change the state from outside of Homekit. Default is 60s.
• fake_temp (optional) the fake temperature displayed in the Home app as current and target temperature. Home app accepts values from 10 to 38. Default is 20°.
• temp_unit (optional) the temperature unit used in the Home app, "C" for °C, "F" for °F. Default is °C.
• trace (optional) displays the main events in homebridge log . Default is false.

In your terminal, enter the two commands below.

For the first one, you will have to replace USERNAME and PASSWORD by your credentials used in the Heatzy app. In return, you should get a token : you will use it in the second command, to replace YOURTOKEN.

The second command will return many datas. For each Heatzy device, you must find this piece of information : "did": "011233455677899abbcd". To know wich did is for which device, you will find another piece of informatation close to it: "dev_alias": "Name". The Name is the one used in the Heatzy app. (You can choose a different name in homebridge configuration file, if you wish).

curl -X POST --header 'Content-Type: application/json' --header 'Accept: application/json' --header 'X-Gizwits-Application-Id: c70a66ff039d41b4a220e198b0fcc8b3' -d '{ "username": "USERNAME", "password": "PASSWORD", "lang": "en" }' 'https://euapi.gizwits.com/app/login'

curl -X GET --header 'Accept: application/json' --header 'X-Gizwits-User-token: YOURTOKEN' --header 'X-Gizwits-Application-Id: c70a66ff039d41b4a220e198b0fcc8b3' 'https://euapi.gizwits.com/app/bindings?limit=20&skip=0'