Controlling Humidifier at certain times of the day

Configuration
1

Hi,

I have an MQTT sensor that reports Humidity to HA every 30mins and a WeMo switch connected a humidifier. What I want to do:

Between the hours of 19:00 and 06:00 maintain a humidity of ~50% in the room and not at other times of the day. This is what I currently have :slight_smile:

Automation1.yaml

alias: Humidity Trigger On
trigger:
  platform: numeric_state
  entity_id: sensor.humidity
  below: 50
condition:
  condition: time
  after: '19:00:00'
  before: '06:00:00'
action:
  service: homeassistant.turn_on
  entity_id: switch.humidifier

Automation2.yaml

alias: Humidity Trigger Off
trigger:
  platform: numeric_state
  entity_id: sensor.humidity
  above: 51
action:
  service: homeassistant.turn_off
  entity_id: switch.humidifier

This does what I think it’s meant to, however if the humidifier is on, but the humidity remains below 51 after 06:00:00 say for example because the bedroom door is open an the target can never be achieved then the humidifier will remain on. When in practise during the day I do not care what the humidity is, just that the humidifier shouldn’t be on.

Thanks

2

You don’t have the time condition to turn it off. Maybe something like this will work.

alias: Humidity Trigger Off
trigger:
  platform: state
  entity_id: switch.humidifier
  state: 'on'
condition:
  condition: or
  conditions:
    - condition: time
      after: '6:01:00'
      before: '18:59:00'
    - condition: numeric_state
      entity_id: sensor.humidity
      above: 51  
action:
  service: homeassistant.turn_off
  entity_id: switch.humidifier
1 Like
3

Thanks for your help. Can I just check I understand this correct.

This automation will trigger as soon as the humidifier is switched on ? Would that not have the effect of the humidifier being switched on then off very quickly ?

4

It will trigger when the switch is on but the switch won’t turn off until one of the conditions is met.