configuration.yaml

input_boolean:
  add_furnace_oil:
    name: Add Furnace Oil
    icon: mdi:gas-station

  configure_fuel_levels:
    name: Configure Fuel Levels
    icon: mdi:cog

input_number:
  daily_furnace_usage_after:
    name: Daily Furnace Usage (After)
    min: 0
    max: 100
    step: 0.01
    mode: box
    unit_of_measurement: h
    icon: mdi:clock-time-eight-outline

  daily_furnace_usage_before:
    name: Daily Furnace Usage (Before)
    min: 0
    max: 100
    step: 0.01
    mode: box
    unit_of_measurement: h
    icon: mdi:clock-time-eight-outline

  fuel_cost_since_last_fill:
    name: Fuel Cost Since Last Fill
    min: 0
    max: 1000
    step: 0.01
    mode: box
    unit_of_measurement: $
    icon: mdi:currency-usd

  furnace_fuel_level:
    name: Furnace Oil Level
    min: 0
    max: 910 #SET THIS TO THE SIZE OF YOUR FUEL TANK (MINE IS 910 LITRES)
    step: 0.1
    mode: box
    unit_of_measurement: Litres
    icon: mdi:car-coolant-level

  heating_time_left
    name: Heating Time Left
    min: 0
    max: 325 #I SET THIS TO SLIGHTLY HIGHER THAN THE ESTIMATED AMOUNT OF RUNTIME FROM A FULL FUEL TANK (TOTAL LITRES / BURN RATE = HOURS PER TANK)
    step: 0.01
    mode: box
    unit_of_measurement: Hours
    icon: mdi:timer-sand

  furnace_oil_last_fill_amount
    name: Last Fill
    min: 0
    max: 910 #SET THIS TO THE SIZE OF YOUR FUEL TANK (MINE IS 910 LITRES)
    step: 0.1
    mode: box
    unit_of_measurement: Litres
    icon: mdi:car-coolant-level

  last_fill_price
    name: Last Fill Price
    min: 0
    max: 100
    step: 0.001
    mode: box
    unit_of_measurement: Dollars
    icon: mdi:currency-usd

  furnace_fuel_after_filling
    name: Level After Filling
    min: 0
    max: 910 #SET THIS TO THE SIZE OF YOUR FUEL TANK (MINE IS 910 LITRES)
    step: 0.1
    mode: box
    unit_of_measurement: Litres
    icon: mdi:car-coolant-level

  furnace_oil_previous_level
    name: Previous Level
    min: 0
    max: 910 #SET THIS TO THE SIZE OF YOUR FUEL TANK (MINE IS 910 LITRES)
    step: 0.1
    mode: box
    unit_of_measurement: h
    icon: mdi:car-coolant-level

  fuel_usage_since_last_fill
    name: Used Since Last Fill
    min: 0
    max: 100
    step: 0.1
    mode: box
    unit_of_measurement: Litres
    icon: mdi:car-coolant-level


sensor:
  - platform: template
    sensors:
      heating_days_left:
        friendly_name: "Heating Days Left"
        unit_of_measurement: 'Days'
        value_template: >
          {% set timeleft = states('input_number.heating_time_left') | float %}
          {% set averageusage = states('sensor.average_furnace_daily_usage') | float %}
          {{ ((timeleft / averageusage)) | round(0) }}
        
      heating_time_left:
        friendly_name: "Heating Time Left"
        unit_of_measurement: 'Hours'
        value_template: > 
          {% set timeleft = states('input_number.heating_time_left') | float %}
          {{ ((timeleft)) | round(1) }}  

      furnace_fuel_cost:
        friendly_name: "Fuel Cost Since Last Fill"
        unit_of_measurement: '$'   
        value_template: > 
          {% set fuelcost = states('input_number.fuel_cost_since_last_fill') | float %}
          {{ ((fuelcost)) | round(2) }}  
          
      furnace_fuel_used:
        friendly_name: "Fuel Usage Since Last Fill"
        unit_of_measurement: 'Litres'   
        value_template: > 
          {% set fuelusage = states('input_number.fuel_usage_since_last_fill') | float %}
          {{ ((fuelusage)) | round(1) }}  
          
      daily_furnace_usage_difference:
        friendly_name: "Daily Furnace Usage Difference"
        unit_of_measurement: 'Hours'    
        value_template: > 
          {% set usagebefore = states('input_number.daily_furnace_usage_before') | float %}
          {% set usageafter = states('input_number.daily_furnace_usage_after') | float %}
          {{ ((usageafter - usagebefore)) | round(2) }}

  - platform: statistics
    name: Average Furnace Daily Usage
    entity_id: sensor.furnace_time_on_yesterday
    state_characteristic: average_timeless
      
  - platform: history_stats
    name: Furnace time on Today
    entity_id: sensor.living_room_thermostat_hvac_state #SET TO THE NAME OF YOUR THERMOSTAT'S HVAC STATE SENSOR
    state: 'heat'
    type: time
    start: '{{ now().replace(hour=0).replace(minute=0).replace(second=0) }}'
    end: '{{ now() }}'

  - platform: history_stats
    name: Furnace time on Yesterday
    entity_id: sensor.living_room_thermostat_hvac_state #SET TO THE NAME OF YOUR THERMOSTAT'S HVAC STATE SENSOR 
    state: 'heat' 
    type: time
    end: '{{ now().replace(hour=0).replace(minute=0).replace(second=0) }}'
    duration:
      hours: 24