Hey Guys,
I have a question about the Integration of an German Brand of HVAC.
Due to it beeing Black Friday Week the Kältebringer Devices are on Sale and I wonder if they can be Integrated with HA? I didn’t find anythin online on the matter. Only that the Tuya Integration might work. Does anyone have any experience?
I’ve created a component for esphome. It’s flashed on the original wifi module
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Hello Kai,
sound interesting for me, considering the same Unit for my workshop and to collect experience with this type of units and HA also. Can you give a more detailed How to, I´m new to HA and have to check if I´ll be able to reproduce this for me.
Thanks a lot!
Holger
Would also have some more Information about how to flash it and if it is still reliable after all the time 
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Here is a picture from the module esp_air_DIM_tcl_8M_QIO_TLS_1.3.3
You need to remove the cable from the ac PCB because you have to power up the wifi module externaly for the flashing process.
Then I have soldered a pin header and connected a flash module like this
Then you have to connect boot pin with gnd on powering up to enable the flashing mode.
You can use the esptool flash_id command to check if the connection was successful.
If it’s working, you can use esphome flashing web tool to flash esphome
Esphome is still running since 6 months on my device
Thank you @KG3RK3N !
Could you please re-upload the Image? I got an access denied…
This link shouldn’t expire now esp_air_DIM_tcl_8M_QIO_TLS_1.3.3