Fan ON/OFF Automation based on temperature, presence and outside temperature.
Fan turns on if the following conditions are met:
temperature inside greater than your set threshold value
& room/area is occupied
& temperature outside is lower than your set maximum value (to prevent turning the fan on in winter)
Fan turns off if the following conditions are met:
temperature inside is lower than your threshold value minus the hystersis value
room/area is not occupied
What the automation NOT observes:
manual fan control. Adapt the given values too your needs.
If you manually turn the fan on and the inside temperature is below the threshold your fan will turn off soon.
What you need:
a fan entity. if you control your fan via a switch entity (via smart plug for example) you can create a template fan entity.
sensor entities for inside and outside temperature. (if you want to use the weather domain than create a template sensor from the temp attribute)
occupation binary sensor entity for presence detection.
blueprint:
name: Automatic Fan Control based on Presence and Temperature
description: |
## Fan ON/OFF Automation based on temperature, presence and outside temperature.
Fan turns on if the following conditions are met:
temperature inside greater than your set threshold value
& room/area is occupied
& temperature outside is lower than your set maximum value (to prevent turning the fan on in winter)
Fan turns off if the following conditions are met:
temperature inside is lower than your threshold value minus the hystersis value
room/area is not occupied
What the automation **NOT** observes:
manual fan control. Adapt the given values too your needs.
If you manually turn the fan on and the inside temperature is below the threshold your fan will turn off soon.
What you need:
a fan entity. if you control your fan via a switch entity (via smart plug for example) you can create a template fan entity.
sensor entities for inside and outside temperature. (if you want to use the weather domain than create a template sensor from the temp attribute)
occupation binary sensor entity for presence detection.
domain: automation
input:
fan:
name: Fan
description: Fan to control
selector:
target:
entity:
domain: fan
temp_inside:
name: Temperature Inside
description: 'Temperature to track inside your house'
selector:
entity:
domain: sensor
device_class: temperature
temp_outside:
name: Temperature Outside
description: 'Temperature outside to prevent to turn on the fan in winter for example'
selector:
entity:
domain: sensor
device_class: temperature
presence_sensor:
name: Presence Sensor
description: 'Only turn on Fan if this area is occupied'
selector:
entity:
domain: binary_sensor
device_class: occupancy
temp_outside_min:
name: Outside temperature
description: 'outside temperature that must be reached to turn on the fan (to prevent the fan to be turned on in winter)'
selector:
number:
min: 0
max: 150
step: 0.5
unit_of_measurement: °C
temp_threshold_inside:
name: Inside temperature threshold
description: 'inside threshold temperature that must be reached to turn on the fan'
selector:
number:
min: 0
max: 150
step: 0.5
unit_of_measurement: °C
hysteresis:
name: Hysteresis
description: 'The difference the observed value must be lower than the threshold value before the fan is turned off'
selector:
number:
min: 0.5
max: 30
step: 0.5
unit_of_measurement: °C
variables:
fan: !input fan
temp_inside_entity: !input temp_inside
temp_inside: "{{ states[temp_inside_entity].state }}"
temp_outside_entity: !input temp_outside
temp_outside: "{{ states[temp_outside_entity].state }}"
presence_sensor: !input presence_sensor
temp_threshold_inside: !input temp_threshold_inside
temp_outside_min: !input temp_outside_min
hysteresis: !input hysteresis
max_exceeded: silent
trigger:
- platform: state
entity_id: !input temp_inside
- platform: state
entity_id: !input temp_outside
- platform: state
entity_id: !input presence_sensor
condition: []
action:
- choose:
- conditions:
- alias: "temp inside greater than temp threshold value"
condition: template
value_template: >
{{ temp_inside|float > temp_threshold_inside|float }}
- alias: "temp outside greater than outside min temp"
condition: template
value_template: >
{{ temp_outside|float > temp_outside_min|float }}
- condition: state
entity_id: !input presence_sensor
state: 'on'
sequence:
- service: homeassistant.turn_on
target: !input fan
- conditions:
- condition: or
conditions:
- condition: state
entity_id: !input presence_sensor
state: 'off'
- condition: template
value_template: >
{{ (temp_threshold_inside - hysteresis)|float > temp_inside|float }}
sequence:
- service: homeassistant.turn_off
target: !input fan
default: []
mode: single