Window is open

The Window is open condition passes when a targeted window is currently open. Use it when you want an automation to continue only if fresh air is coming in, or when you want to warn someone before leaving the house with a window still open.

Using this condition from the user interface

If you prefer building automations visually, Home Assistant walks you through this condition step by step. You pick what to check, tweak a few options, and save. No YAML knowledge required.

To use this condition in an automation:

1. Go to Settings > Automations & scenes.
2. Open an existing automation, or select Create automation > Create new automation.
3. In the And if section, select Add condition.
4. Select what you want to check. Under By target (see Targets), pick the area the window is in, like your bedroom or kitchen. You can also select a floor, a device, a specific entity, or a label.
5. From the conditions shown for that target, select Window is open.
6. Under Condition passes if (see Behavior), pick Any or All to control how the check behaves when multiple windows are targeted.
7. Under For at least, set how long the window must have been open before the condition passes. Leave it at zero to pass immediately.
8. Select Save.

Options in the UI

Using this condition in YAML

If you work directly in YAML, or you want to know exactly what Home Assistant does under the hood, this section has the technical reference. It lists the field names you use in YAML, their types, and which ones are required.

In YAML, refer to this condition as window.is_open. A basic example looks like this:

condition: window.is_open
target:
  entity_id: binary_sensor.kitchen_window

This passes when binary_sensor.kitchen_window is currently open.

Options in YAML

YAML sometimes provides additional options for more complex use cases that are not available through the UI.

Targets of the condition

This condition requires a target. The target is the object that Home Assistant will check. You can point the condition at a single entityAn entity represents a sensor, actor, or function in Home Assistant. Entities are used to monitor physical properties or to control other entities. An entity is usually part of a device or a service. [Learn more], a device, an area, a floor, or a label, and Home Assistant will evaluate every matching window entity behind that target.

• Entity: one specific window entity, such as window.living_room.
• Device: every window entity that belongs to a device.
• Area: every window entity in a room or area.
• Floor: every window entity on a floor.
• Label: every window entity that shares a label.

You can also select different target types in one condition. For example, you can add a specific entity and an area as targets in the same condition to check both of them at once.

Behavior with multiple targets

When you target more than one entity (or select an area, floor, or label that contains several), the Condition passes if option controls how the results combine:

• Any (default): the condition passes if at least one of the targeted entities matches. For example, if you check three smoke sensors and only one of them detects smoke, the condition still passes. This is useful for questions like “is there smoke anywhere in the house?”
• All: the condition passes only when every targeted entity matches. For example, if you check the same three smoke sensors, the condition passes only once all three report cleared. This is useful for “is the entire house safe now?” checks, so your automation does not send an all-clear while one room still has a reading.

Good to know

• Windows that are unavailable (unavailable) or have an unknown state (unknown) do not count as open. Home Assistant skips them and evaluates the condition using the remaining targeted windows.
• This condition works with binary sensors and covers that use the window device class.
• To check the opposite state, use Window is closed.

Try it yourself

Ready to test this? Go to Settings > Automations & scenes, open an automation, and add this condition. Trigger the automation with and without the condition met, and watch whether it continues or stops.

More examples

Real scenarios where this condition gates an automation. Copy any example and adapt it to your setup.

Automation: get reminder if any downstairs window is still open at bedtime

At bedtime, a reminder can help you notice an open window before you lock up for the night.

• Trigger: Time: 22:30
• Condition: Window is open
• Target: Downstairs windows label
• Condition passes if: Any
• Action: Send a mobile notification

alias: "Remind me if a downstairs window is open at bedtime"
triggers:
  - trigger: time
    at: "22:30:00"
conditions:
  - condition: window.is_open
    target:
      label_id: downstairs_windows
    options:
      behavior: any
      for: "00:00:00"
actions:
  - action: notify.mobile_app_phone
    data:
      title: "Window still open"
      message: "At least one downstairs window is still open."

Automation: turn off heater if roof window has been open for 10 minutes

If a motorized roof window has been open for a while, turning off the heater can help avoid wasting energy.

• Trigger: Time pattern: Every 10 minutes
• Condition: Window is open
• Target: Bedroom roof window cover
• Condition passes if: Any
• For at least: 00:10:00
• Action: Climate: Turn off

alias: "Turn off heating if the roof window stays open"
triggers:
  - trigger: time_pattern
    minutes: "/10"
conditions:
  - condition: window.is_open
    target:
      entity_id: cover.bedroom_roof_window
    options:
      behavior: any
      for: "00:10:00"
actions:
  - action: climate.turn_off
    target:
      entity_id: climate.bedroom

Still stuck?

The Home Assistant community is quick to help: join Discord for real-time chat, post on the community forum with the condition you’re using and what you expected to happen, or share on our subreddit /r/homeassistant.

Related conditions

These conditions work well alongside this one:

• Window is closed: Tests if one or more windows are closed.