Counters:

```yaml
days_since_fridge_filter_replaced:
  name: days_since_fridge_filter_replaced
  restore: true
  initial: 0
  step: 1
  icon: mdi:fridge
last_non_zero_days_since_fridge_filter_replaced:
  name: last_non_zero_days_since_fridge_filter_replaced
  restore: true
  initial: 0
  step: 1
  icon: mdi:fridge
```

Input Buttons:

```yaml
reset_days_since_fridge_filter_replaced:
  name: reset_days_since_fridge_filter_replaced
  icon: mdi:fridge
undo_reset_days_since_fridge_filter_replaced:
  name: undo_reset_days_since_fridge_filter_replaced
  icon: mdi:undo
```

Automations:

```yaml
- alias: 'Counter: Increment days_since_fridge_filter_replaced'
  description: ''
  trigger:
  - platform: time
    at: 00:00:00
  condition: []
  action:
  - service: counter.increment
    metadata: {}
    data: {}
    target:
      entity_id: counter.days_since_fridge_filter_replaced
  mode: single
- alias: 'Counter: Reset days_since_fridge_filter_replaced'
  description: ''
  trigger:
  - platform: state
    entity_id:
    - input_button.reset_days_since_fridge_filter_replaced
  condition: []
  action:
  - service: counter.reset
    metadata: {}
    data: {}
    target:
      entity_id: counter.days_since_fridge_filter_replaced
  mode: single
- alias: 'Counter: Update last_non_zero_days_since_fridge_filter_replaced'
  description: ''
  trigger:
  - platform: state
    entity_id:
    - counter.days_since_fridge_filter_replaced
  condition:
  - condition: numeric_state
    entity_id: counter.days_since_fridge_filter_replaced
    above: 0
  action:
  - service: counter.increment
    metadata: {}
    data: {}
    target:
      entity_id: counter.last_non_zero_days_since_fridge_filter_replaced
  mode: single
- alias: 'Counter: Reset last_non_zero_days_since_fridge_filter_replaced'
  description: ''
  trigger:
  - platform: numeric_state
    entity_id:
    - counter.days_since_fridge_filter_replaced
    above: 0
    below: 2
  condition: []
  action:
  - service: counter.reset
    metadata: {}
    data: {}
    target:
      entity_id: counter.last_non_zero_days_since_fridge_filter_replaced
  - service: counter.increment
    metadata: {}
    data: {}
    target:
      entity_id: counter.last_non_zero_days_since_fridge_filter_replaced
  mode: single
- alias: 'Counter: Undo Reset days_since_fridge_filter_replaced'
  description: ''
  trigger:
  - platform: state
    entity_id:
    - input_button.undo_reset_days_since_fridge_filter_replaced
  condition:
  - condition: numeric_state
    entity_id: counter.days_since_fridge_filter_replaced
    below: 1
  action:
  - service: counter.set_value
    metadata: {}
    data:
      value: "{{ int(states('counter.last_non_zero_days_since_fridge_filter_replaced'))}}"
    target:
      entity_id: counter.days_since_fridge_filter_replaced
  - service: counter.decrement
    metadata: {}
    data: {}
    target:
      entity_id: counter.last_non_zero_days_since_fridge_filter_replaced
  mode: single
```

Dashboard:

```yaml
title: Days Since Fridge Filter Replaced
type: grid
square: false
columns: 1
cards:
  - type: grid
    square: false
    columns: 2
    cards:
      - name: Reset
        show_name: true
        show_icon: true
        type: button
        tap_action:
          action: toggle
        entity: input_button.reset_days_since_fridge_filter_replaced
        show_state: true
      - name: Undo
        show_name: true
        show_icon: true
        type: button
        tap_action:
          action: toggle
        entity: input_button.undo_reset_days_since_fridge_filter_replaced
        show_state: true
  - type: grid
    square: false
    columns: 2
    cards:
      - type: entity
        entity: counter.days_since_fridge_filter_replaced
        state_color: false
        name: Days Since
      - type: entity
        entity: counter.last_non_zero_days_since_fridge_filter_replaced
        state_color: false
        name: Last Value
  - type: history-graph
    hours_to_show: 72
    entities:
      - counter.days_since_fridge_filter_replaced
```