Controlling climate AND humidity at the same time

ESPHome
1

Hi everybody,

I found here information about the fact that the thermostat platform can be used to keep not only the temperature but also humidity in a given range:

Note

  • While this platform uses the term temperature everywhere, it can also be used to regulate other values. For example, controlling humidity is also possible with this platform.

Now I would like to set temperature AND humidity values to be reached at the same time (mostly like the “AND” condition within HA…). In this case: temp needs to be above 40°C AND humidity below 30% (for a 3D-Printer Filament Dryer):

sensor:
  - platform: htu21d
    i2c_id: klima
    temperature:
      name: "Temperatur"
    humidity:
      name: "Luftfeuchtigkeit"
    update_interval: 60s

### [...]

climate:
  - platform: thermostat
    name: "Filadryer 2 Temperature Controller"
    sensor: klima
    min_heating_off_time: 120s
    min_heating_run_time: 120s
    min_idle_time: 30s
    heat_action:
      - switch.turn_on: heizung
    idle_action:
      - switch.turn_off: heizung
    default_preset: PLA
    preset:
      - name: PLA
        default_target_temperature_low: 40 °C
        default_target_humidity_high: 30 %
    preset:
      - name: PETG
        default_target_temperature_low: 60 °C
        default_target_humidity_high: 30 %

Is this possible at all? Or is there another way (outside HA) in ESPhome to set this? Any other platform or code?

Thank you!

Kay

2

Since you are using two sensors you likely need 2 “thermostats”…

sensor:
  - platform: htu21d
    i2c_id: klima
    temperature:
      name: "Temperatur"
      id: klima_temp
    humidity:
      name: "Luftfeuchtigkeit"
      id: klima_hum
    update_interval: 60s

### [...]

climate:
  - platform: bang_bang
    name: "Filament Temperature Control"
    sensor: klima_temp
    default_target_temperature_low: 40
    default_target_temperature_high: ?  #set to max value for PLA
    heat_action:
      - switch.turn_on: heizung
    idle_action:
      - switch.turn_off: heizung
    away_config:
      default_target_temperature_low: 60
      default_target_temperature_high:  ? #set to max value for PETG

  - platform: bang_bang
    name: "Filament Humidity Control"
    sensor: klima_hum
    default_target_temperature_low: ? #set to min humidity value for PLA
    default_target_temperature_high: 30
    cool_action:
      - switch.turn_on: heizung
    idle_action:
      - switch.turn_off: heizung
    away_config:
      default_target_temperature_low: ? #set to min value for PETG
      default_target_temperature_high: 30
3

Thank you very much @Didgeridrew !

I used your approach but with the thermostat instead of bang_bang climate-platform because It allows me to use more than to “preset-sets” and name them individually. Now, although it seems to work and appears correctly in the ESPs webfrontend and HA, I have several problems remaining to solve (you can find the code below):

  • Why do humidity values appear in °C instead of % ? That isn’t that important but irritating…
  • I can’t find any command to turn the climate controller off by default / on boot. It always starts heating upon reboot. Is there any way to set it off by default?
  • Most important: although I used two different climate instances referring to two different sensors like you mentioned in your post, the Temp-Preset-Values seem to be “overwritten” by the Dry-Preset-Values as you can see in the screenshot (everywhere 30 instead of 45 and 50 as coded)

Any ideas?

Kay

Bildschirmfoto 2023-08-04 um 09.13.28
Bildschirmfoto 2023-08-04 um 09.13.28950×672 29.9 KB 

sensor:
  - platform: htu21d
    i2c_id: klima
    temperature:
      name: "Temperatur"
      id: klima_temp
    humidity:
      name: "Luftfeuchtigkeit"
      id: klima_hum
    update_interval: 60s

######

climate:
  - platform: thermostat
    name: "Filadryer 2 Thermostat"
    icon: mdi:thermometer-auto
    sensor: klima_temp
    min_heating_off_time: 120s
    min_heating_run_time: 120s
    min_idle_time: 30s
    heat_action:
      - switch.turn_on: heizung
    idle_action:
      - switch.turn_off: heizung
    preset:
      - name: "PLA Temp"
        default_target_temperature_low: 45 °C
        mode: HEAT
      - name: "PETG Temp"
        default_target_temperature_low: 45 °C
        mode: HEAT
      - name: "ABS Temp"
        default_target_temperature_low: 50 °C
        mode: HEAT
  - platform: thermostat
    name: "Filadryer 2 Hygrostat"
    icon: mdi:air-humidifier
    sensor: klima_hum
    min_cooling_off_time: 120s
    min_cooling_run_time: 120s
    min_idle_time: 30s
    dry_action:
      - switch.turn_on: heizung
    cool_action:
      - switch.turn_on: heizung
    idle_action:
      - switch.turn_off: heizung
    preset:
      - name: "PLA Hum"
        default_target_temperature_high: 30 °C
        mode: DRY
      - name: "PETG Hum"
        default_target_temperature_high: 30 °C
        mode: DRY
      - name: "ABS Hum"
        default_target_temperature_high: 30 °C
        mode: DRY
4

I’m working on a similar project – were you ever able to resolve your issues above?