Best method for esp32 climate master + slave

Hello everyone,
i use esphome on 5 esp32 with dht22 + bang bang climate (which should behave as slaves).
In home assistant I have a climate component which is the master.

  1. What is the best method to ensure that at the start of esp32 the bang bang climate take the default_target_temperature_low and default_target_temperature_high from the climate master ( in home assistant )?

  2. I also verified that by changing the values ​​(default_target_temperature_low and default_target_temperature_high) from the lovelace interface, when restarting the esp32 these new values ​​are lost and the bang bang restarts with the values ​​entered in the config. Is it possible to prevent the bang bang from losing the new values ​​set by the interface?

help
i am stucked