Tesy
krasnoukhov
On Home Assistant 2026.11 or newer? Open it in the Marketplace
- Installs
- 65 sharing analytics
- GitHub stars
- 21
- Connection
- Works locally
- Upkeep
- Updated in the last 6 months
- Version
- v1.6.1,
- Category
- Climate
- Kind
- Marketplace integration
- Needs
- Needs the Marketplace (HACS on 2026.10 and older)
- Domain
tesy- Issues
- Report an issue
Independent directory, made by the developer of Vulpo. Not affiliated with Home Assistant or the Open Home Foundation.
Screenshots From the README of krasnoukhov/homeassistant-tesy.
About
Tesy is a Home Assistant integration that controls Tesy water heaters with an ESP32 WiFi module over the local network. It adds a water heater entity for changing operation modes and, in manual mode (Performance in Home Assistant), the temperature setpoint. Sensors cover temperature, target temperature, time until ready, error status, WiFi signal and uptime. Two energy sensors are included: one for total lifetime use and one resettable, with a button that resets the second. Energy is calculated from the heater's on-time, so the setup asks for the heater's power rating, and it also has a switch for boost mode and one for child lock. Devices with the older Atheros chip are handled through an option for the old API, and setup is done in the UI.
Automatic summary of the README and code of krasnoukhov/homeassistant-tesy. Something wrong, or are you the maintainer and want your own text here? Get in touch
Supports
Works locally Talks to your devices on your own network. No vendor cloud in between.
From the Marketplace Installed through the Marketplace, formerly HACS.
Actively maintained Its author released or pushed a change in the last six months.
Provides
- Water heaters
- Switches
- Sensors
Setting it up
Install it from the Marketplace and restart Home Assistant, then add it under Settings, Devices and services.
Connect
- IP address
- Power of the heater for energy calculation
- Use old API for devices with Atheros chip
After setup
- Poll interval, secondsHow often the heater is read (5-300; 30-300 on the old API). Changes made on its panel or in MyTESY appear within this time.
- Sync the heater time zone with Home AssistantWrites Home Assistant's time zone to the heater on start-up and when it changes. The weekly programs run on the heater clock. Turn off if Home Assistant's time zone is not the heater's local time.
Texts from the code of krasnoukhov/homeassistant-tesy.
Entities
- Binary sensorsClock problem
- ButtonsReset Consumed Energy, Sync time zone
- SensorsTemperature, Energy Consumed, Ready In, Target Temperature, Error Status, WiFi Signal, Uptime, Energy Consumed (Resettable)
- SwitchesBoost, Child Lock
- Water heatersHeater
Actions
- Set weekly programWrites 24 hourly temperatures to days of a weekly program.Fields: Program, Days, Temperatures
Shows in Vulpo
Quick Toggle card, Button card, Chart card, Apple Watch, Control Center.Information
- Installs
- 65 sharing analytics
- GitHub stars
- 21
- Connection
- Works locally
- Upkeep
- Updated in the last 6 months
- Version
- v1.6.1,
- Category
- Climate
- Kind
- Marketplace integration
- Needs
- Needs the Marketplace (HACS on 2026.10 and older)
- Domain
tesy- Issues
- Report an issue
