Home Assistant A-Z: A is for Automations

Sun, 20 Jul 2025 00:00:00 +0200

Every day you flip a light switch at least 50 times. What if your home could take care of that for you — and save energy, improve your security, and give you back 15 minutes every single day?

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What is this actually about?

Automations are the heart of your smart home. They handle tasks for you — automatically, of course.

The concept: If something happens, then do something.

When it gets dark outside, turn on the outdoor lighting
When nobody is home, arm the alarm system

You need a trigger (e.g., sunset), can narrow things down with conditions (e.g., only when nobody is home), and define one or more actions (e.g., turn on the lights).

Why does this matter for your smart home?

Let’s be honest: you can control your lights via an app. But imagine coming home exhausted, arms full of grocery bags — and the lights just turn on automatically. Or you forget the stove again — an automation shuts it off after 30 minutes.

Benefits:

Time savings: No opening apps, no searching for switches, no forgotten devices
Security: Automatic shutoffs, notifications, and presence simulations
Convenience: Your home thinks ahead and takes care of routine tasks for you

My three most important automations easily save me 15 minutes a day!

How does this work in Home Assistant?

Let’s look at an example:

Trigger: Wind sensor reports gusts above 30 km/h
Action: Automatically retract the awning

Here’s how:

Go to Settings → Automations & Scenes
Click Create Automation
Select Start with an empty automation
Define triggers, conditions, and actions
Name and save the automation

The most common pitfalls

1. Not accounting for all real-life situations The awning retracts when it’s windy — but what happens when you manually extend it again afterwards? The automation won’t fire because it only triggers when wind speed crosses the threshold. Solution: Add additional triggers or conditions to handle edge cases.

2. Problems with multiple triggers If you use multiple triggers (e.g., “Wind gusts OR awning is extended”), the automation can fire even when you intentionally extend the awning yourself. Solution: When using multiple triggers, always use conditions to verify that the actual condition is still met.

3. Wrong automation mode The default mode “Single” means: if the automation is triggered again while it’s still running, nothing happens. This can be problematic for longer-running automations. Solution: Choose the right mode (Single, Restart, Parallel, Queue) depending on your use case. Learn more in this article.

What creative or useful things can you do with this?

With automations, the possibilities are almost endless. For real value, start with automations that eliminate repetitive manual tasks.

My favorite: “Good Morning” automation

Open the roller shutters
Set the lights in the bathroom and kitchen
Start music depending on the day of the week

So many things I’d otherwise have to do by hand every single day!

Conclusion

Automations make the difference between a connected home and a truly smart home. They save time, improve security, and simply make life more comfortable.

My tip: Start small, test thoroughly, and expand your automations step by step. You’ll soon wonder how you ever lived without them!

Which automation saves you the most time? Share your idea in the comments below. Continue with “B” is for Blueprints or check out the overview of all A-Z articles.

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― Joachim

Beginners on Smart Home? Sure — But Secure!

Home Assistant A-Z: A is for Automations

What is this actually about?

Why does this matter for your smart home?

How does this work in Home Assistant?

The most common pitfalls

What creative or useful things can you do with this?

Conclusion