Home Assistant: What to Do After You Install It
You installed Home Assistant. The dashboard is up. The interface looks like a spaceship cockpit built by an engineer who hates white space. And you have absolutely no idea what to do next. This guide covers home assistant getting started in depth.
This is the part nobody writes about. Most home assistant getting started guides cover installation and then immediately jump to complex automations you’re not ready for. This home assistant getting started guide begins where you actually are — staring at an empty dashboard — and walks you through the first things worth doing, in order.
Home Assistant Getting Started: What to Set Up First
Before you buy a single sensor or smart bulb, connect what you already own. Home Assistant is a local hub — it pulls together devices from different ecosystems that would otherwise never talk to each other. That’s the whole point.
Add these integrations first, before buying anything new:
Google/Nest devices — if you have a Nest thermostat, Nest cameras, or a Google Home speaker, the Google Home integration brings them all in. You’ll see your thermostat’s current temperature, set schedules, and eventually automate based on it.
Amazon Alexa / Echo — the Alexa integration is mostly about voice control, but it also exposes your Echo devices as media players you can target in automations (“announce when someone rings the doorbell”).
Philips Hue — if you have Hue bulbs, Home Assistant connects directly to the Hue Bridge on your local network. No cloud. Faster response than the Hue app. This is the first taste of why local control matters.
Your router — several router brands (Unifi, ASUS, pfSense/OPNsense via add-ons) have Home Assistant integrations that expose connected devices. This means you can trigger automations based on who’s home based on their phone’s connection to your network — no GPS, no phone app running in the background.
Sonos / Spotify / Plex — media integrations are low-effort and immediately useful. Being able to say “start my morning playlist when I turn off the alarm” requires your music player to be in Home Assistant first.
Spend 30 minutes just adding integrations for things you already own. This is the real home assistant getting started move — not buying hardware, but connecting what you have. You’ll discover Home Assistant can already see more of your home than you expected.
Add Sensors Next — These Are the Foundation
Automations that do something useful require sensors that tell Home Assistant what’s happening. Without sensors, you’re just controlling devices manually from an app — which is not better than using the original app.
The three sensor types worth starting with:
Motion Sensors
Motion sensors are the highest-leverage starting point. A single motion sensor in a room unlocks: lights that turn on when you enter, lights that turn off when the room is empty, security alerts when motion happens at unexpected hours, and presence detection for “is anyone home?”
The Aqara Motion Sensor P2 uses Zigbee and costs about $18. It’s fast, reliable, and reports every 5 seconds rather than once per minute like cheaper sensors. If you only buy one sensor to start, make it this.
For Zigbee sensors to work, you need a Zigbee coordinator connected to your Home Assistant host. The SONOFF Zigbee 3.0 USB Dongle Plus costs $20 and is the most widely recommended option. Plug it into your Home Assistant device, install the Zigbee Home Automation (ZHA) integration or Zigbee2MQTT, and you’re running a local Zigbee network with no cloud required.
Door and Window Sensors
A door sensor tells Home Assistant when a door opens or closes. Sounds simple. The automations it enables are not:
- Turn on the porch light when the front door opens after sunset
- Send a notification if the garage door is still open at 10pm
- Start the coffee maker when the bedroom door opens in the morning
- Cut the AC when a window has been open for more than 10 minutes
The Aqara Door and Window Sensor P2 is $12 and uses the same Zigbee dongle as the motion sensor above. Buy a few.
Temperature and Humidity Sensors
These seem like nice-to-haves until you discover they’re the backbone of HVAC automations. A $12 sensor in each room tells you which rooms are actually cold, which ones run hot, and whether your thermostat’s location is representative of the house.
The Aqara Temperature and Humidity Sensor is reliable and Zigbee-based. Put one in the bedroom, one in the living room, and one wherever your thermostat isn’t.
Start With Lights — They’re the Easiest Win
Smart lights are where most people start, and for good reason: the feedback loop is instant. You can see it working. Guests notice it. It feels like the home is actually smart.
Two paths worth considering:
Zigbee bulbs — the cheapest per-bulb option. IKEA Tradfri bulbs cost $8–10 each and pair directly with your Zigbee coordinator. No bridge required. Colors are limited but the white temperature range is solid for most rooms.
Philips Hue — more expensive ($15–20/bulb plus a $60 bridge), but the integration with Home Assistant is mature, the responsiveness is excellent, and the color accuracy is better than most alternatives. If you already have a Hue bridge, adding bulbs is the path of least resistance.
Avoid Wi-Fi bulbs if you can. They add load to your 2.4GHz network, require cloud accounts, and tend to have flakier local API support than Zigbee. Tuya/Smart Life Wi-Fi bulbs in particular are a pain to integrate locally — doable, but more effort than Zigbee.
Your First Three Automations
Once you have motion sensors and smart lights, home assistant getting started really clicks here — build these three automations first. They cover 80% of what most people actually use Home Assistant for daily.
1. Lights on when motion detected, off after idle
Trigger: motion sensor detects motion
Action: turn on the light
Also add: turn off the light 5 minutes after motion clears
This is the automation you’ll run forever. Start conservative — 5 minutes off delay. You’ll tune it after living with it for a week.
2. Welcome home / away mode
Trigger: your phone connects to (or disconnects from) your home Wi-Fi
Action: set Home Assistant to “Home” or “Away” mode
Away mode can disable motion-triggered lights in the bedroom, arm a security sensor, or cut HVAC setpoints. Home mode reverses it. This is more reliable than GPS geofencing and uses no battery.
3. Notify if door open at bedtime
Trigger: time (e.g. 10:30pm)
Condition: front door sensor reports “open” OR garage door sensor reports “open”
Action: send a notification to your phone
Simple. You’ll use it within a week of setting it up.
What NOT to Do When Getting Started
A few traps that slow down the home assistant getting started process:
Don’t try to automate everything at once. One automation that works well teaches you more than ten half-finished ones. Pick one room, get it right, then expand.
Don’t buy Z-Wave and Zigbee at the same time. Both are good protocols. Pick one to start. Zigbee gear is cheaper and the USB dongle setup is simpler for most people. Add Z-Wave later if you need it (deadbolts, leak sensors, and some HVAC controls are stronger in Z-Wave).
Don’t skip backups. Home Assistant has a built-in backup system. Enable automatic backups to a network share or USB drive on day one. Restoring a broken Home Assistant from backup takes 5 minutes. Rebuilding it from scratch takes a weekend.
Don’t run Home Assistant on a laptop or desktop. You want it always on. A Raspberry Pi 4 ($50–60), an ODROID-N2+, or a used mini PC running Home Assistant OS is the right hardware. Something that draws 5–10W and never sleeps.
Where to Go After the Basics
Once you have sensors, lights, and a few automations running, the ceiling gets high fast. The areas worth exploring next:
Energy monitoring — plug-in power monitors like the Emporia Vue or circuit-level monitors give you whole-home power usage in Home Assistant. Useful for understanding what’s actually drawing power and automating based on energy cost.
Voice assistants without the cloud — Wyoming protocol lets you run local voice assistants using Whisper (speech-to-text) and Piper (text-to-speech) entirely on your local hardware. No data leaving your network.
Dashboards — the default dashboard is functional but ugly. Mushroom Cards and custom button cards are the two most widely used frontend customizations. Install HACS (Home Assistant Community Store) to access them.
For a deeper look at which smart home protocols make sense for different setups, see our best smart home hub guide and smart home automation explainer. If you’re thinking about lighting specifically, the best smart lighting comparison covers Philips Hue vs Nanoleaf vs LIFX in detail.
Frequently Asked Questions
Do I need to buy a special hub to use Home Assistant?
Home Assistant itself is the hub — it runs on a Raspberry Pi, mini PC, or any always-on hardware you have. Some device protocols (Zigbee, Z-Wave) need a USB coordinator dongle, but there’s no subscription fee or proprietary hub required. That’s what makes it different from SmartThings or Amazon Alexa.
Is Home Assistant hard to set up for a beginner?
Installation is simple if you follow the official docs. The steep part is learning the automation logic and YAML configuration. Expect to spend a few hours getting comfortable. The payoff is a system that does exactly what you want it to do, without manufacturer apps or cloud dependencies.
What’s the best first device to buy for Home Assistant?
A Zigbee USB dongle ($20) and a motion sensor ($18). That combination unlocks motion-triggered automations immediately and gives you a foundation to add door sensors, temperature sensors, and bulbs without buying into a proprietary ecosystem.
Can I use my existing smart home devices with Home Assistant?
Almost certainly yes. Home Assistant supports over 3,000 integrations including Google, Amazon, Apple HomeKit, Philips Hue, IKEA, Tuya, TP-Link Kasa, Shelly, Sonos, Plex, and hundreds more. If you have a smart home device, there’s a very good chance Home Assistant already speaks its language.
What’s the difference between Zigbee and Z-Wave in Home Assistant?
Both are local wireless protocols — no cloud, low power, mesh network. Zigbee gear is cheaper and easier to source (IKEA, Aqara, SONOFF all make Zigbee devices). Z-Wave gear tends to be more expensive but offers better range, less interference from Wi-Fi, and stronger support for locks and security devices. Most people start with Zigbee.
Does Home Assistant work without internet?
Yes — that’s the whole point of running it locally. Your automations, dashboards, and device control all work if your internet goes down. The only things that require internet are cloud-dependent integrations (Google, Amazon, etc.) and remote access to your dashboard from outside your home network.
