switch.yaml

- platform: template
  switches:
    blue_shell_climate:
      friendly_name: Blue Shell Climate
      icon_template: "mdi:fan"
      value_template: "{{ is_state('climate.blue_shell_hvac_climate_system','heat_cool') }}"
      turn_on:
        - service: climate.turn_on
          target: 
            entity_id: climate.blue_shell_hvac_climate_system

      turn_off:
        - service: climate.turn_off
          target: 
            device_id: 5912382cb94176f76b594aa4d8945945

    blue_shell_defrost:
      friendly_name: Blue Shell Defrost
      icon_template: "mdi:snowflake-melt"
      value_template: "{{ is_state_attr('climate.blue_shell_hvac_climate_system','preset_mode','Defrost') }}"
      turn_on:
        - service: climate.set_preset_mode
          target: 
            entity_id: climate.blue_shell_hvac_climate_system
          data:
            preset_mode: Defrost
      turn_off:
        - service: climate.set_preset_mode
          target: 
            entity_id: climate.blue_shell_hvac_climate_system
          data:
            preset_mode: Normal