Determine percentage of time a sensor is in each mode

Configuration
1

Hi, I have my WaterFurnace HVAC system connected to my HA, and one sensor shows what mode the system is in (standby, heating, cooling, fan only, etc). I’d like to know what percentage of time the sensor spends in each mode, and be able to graph that. I think template is the answer, but I can’t quite figure it out. Thanks.

2

you can use history-stats for this.

So, for example, this tells me how long my heating has been on today:

sensor:
  - platform: history_stats
    name: Heating today
    entity_id: binary_sensor.heating_reported_action
    state: "on"
    type: time
    start: "{{ now().replace(hour=0, minute=0, second=0) }}"
    end: "{{ now() }}"

I think you could try something like this:

sensor:
  - platform: history_stats
    name: Heating today
    entity_id: climate.hvac-name # put your climate.entity here
    state: "heating" # or standby, or cooling, or fan only etc etc (from your example)
    type: time
    start: "{{ now().replace(hour=0, minute=0, second=0) }}"
    end: "{{ now() }}"
3 Likes
3

I have a water heater recirc pump and I basically do the same thing showing the percentage of time the pump ran yesterday.

there may be other ways to do it but my chosen method is that I create two sensors - one to show how long the pump ran yesterday (how long it was in the ‘on’ state) and the other to calculate the percentage.

sensor:
  - platform: history_stats
    name: Recirc Pump Run Time Yesterday
    entity_id: switch.water_heater_recirc_pump
    state: "on"
    type: time
    end: "{{ now().replace(hour=0, minute=0, second=0, microsecond=0) }}"
    duration:
      hours: 24
    
  - platform: template
    sensors:
      recirc_pump_run_time_percent:
        friendly_name: Recirc Pump Daily Run Time Percentage
        value_template: "{{ (((states('sensor.recirc_pump_run_time_yesterday') | float / 24.0) ) * 100) | round(2) }}"
        unit_of_measurement: '%'
1 Like
4

This is what I did. It worked great, thanks!

5

Thank you for this!

I’ve just added it to for my weather station’s wind vane.
I’m hoping to get nice graphs over the year with percentage of each day the wind has blown in a direction. Right now it’s nothing as I just restarted to add it in.

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6

Why not just use the ratio type History Stats sensor?

2 Likes
7

IDK… Because I’ve not looked into it and didn’t know it was a thing…?..

But I will now.

:laughing: