The Netatmo Smart Thermostat is one of the most popular in Europe — designed by Philippe Starck, with Matter support, and no subscription fees. But is it actually worth it? In this detailed review we cover installation, the app experience, energy savings, and how it compares to the competition.
What Is the Netatmo Thermostat
It's a smart thermostat that replaces your traditional boiler thermostat. It connects via WiFi to the internet, is controlled from a smartphone (iOS/Android), supports voice commands (Google, Alexa, Siri), and creates a smart heating schedule for energy savings.
Price: ~€180 (February 2026). No subscription — all features are completely free.
Technical Specifications
| Feature | Details |
|---|---|
| Connectivity | WiFi 2.4GHz |
| Protocols | Matter, HomeKit, Google Home, Alexa |
| Power | 3x AAA batteries (~2 years life) |
| Display | E-ink (visible without backlight) |
| Design | Philippe Starck, transparent cover |
| Auto-Adapt | Learns home heating time automatically |
| Schedule | 7-day, multiple temperature zones |
| Weather | Uses weather data for optimization |
| History | Detailed consumption graphs |
| Valves (optional) | Smart Radiator Valves (~€80 each) |
Installation
Installation is relatively straightforward if you have basic electrical knowledge. Netatmo provides a detailed step-by-step guide in the app with video instructions. The entire process takes 20-40 minutes:
- Disconnect old thermostat: Turn off the boiler, remove the old thermostat from the wall
- Connect relay: The Netatmo relay connects to the boiler wires (COM + NO terminals)
- Place thermostat: Position the wireless thermostat in a central location in your home
- App setup: Download the Netatmo Energy app, scan the QR code, configure WiFi
- Schedule: Create a weekly heating schedule with desired temperatures
Important: If your boiler uses OpenTherm instead of on/off control, you need the Netatmo Thermostat V2 or the adapter. OpenTherm enables modulation — the boiler adjusts flame intensity instead of simply switching on and off.
App (Netatmo Energy)
The Netatmo Energy app is clean, functional, and ad-free. It offers:
- Current temperature + target in real time
- Weekly schedule with drag-and-drop interface
- Boost mode (quick heating for 30-60 minutes)
- Away mode (energy saving during absence)
- Consumption history with detailed graphs
- Frost guard (protects pipes from freezing)
Auto-Adapt: The Auto-Adapt feature learns how quickly your home heats up and starts heating earlier so that by 7:00 AM, for example, you already have 21°C waiting for you.
Energy Savings
Netatmo estimates savings of 15-25% on heating. Here's how it achieves this:
- Schedule: Automatically lowers temperature at night and during absence hours
- Geofencing: Detects when you leave home and enters eco mode automatically
- Open window detection: If temperature drops suddenly, it turns off heating
- Weather adaptation: Uses weather forecasts for proactive temperature adjustment
In a typical European home with heating costs of €800-1200/year, savings reach €120-250/year. The thermostat pays for itself in less than 2 winters.
Smart Radiator Valves
For full zone control, Netatmo offers Smart Radiator Valves (~€80 each). Each valve attaches to a radiator and can control temperature independently per room. Installation is tool-free: remove the manual valve and screw the smart valve in its place.
Example: 21°C in the living room, 18°C in bedrooms, 23°C in the bathroom. This increases savings by an additional 5-10% because you're not heating rooms you're not using. Each valve runs on AA batteries that last 2 years.
Home Assistant Integration
Netatmo integrates fully with Home Assistant via cloud API or Matter. You can create automations like:
- Automatically reduce temperature when a window opens (contact sensor)
- Increase heating 30 minutes before arriving home (GPS tracking)
- Disable heating if nobody is home (presence detection)
- Dashboard with temperature graphs for every room
Comparison with Competition
| Feature | Netatmo | Tado° | Google Nest |
|---|---|---|---|
| Price | ~€180 | ~€200 | ~€250 |
| Subscription | ❌ Free | €3/month (Auto-Assist) | ❌ Free |
| Matter | ✅ | ✅ | ✅ |
| HomeKit | ✅ | ✅ | ❌ |
| Geofencing | ✅ Free | Subscription required | ✅ Free |
| Design | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐ |
| Radiator Valves | ✅ | ✅ | ❌ |
Pros
- No subscription — everything is free, no hidden costs
- Beautiful Philippe Starck design — the best-looking thermostat on the market
- Matter + HomeKit + Google + Alexa — full ecosystem compatibility
- E-ink display — batteries last 2 years without charging
- Smart Radiator Valves for full zone control of every room
- Geofencing included free — unlike Tado° which charges a subscription
Cons
- No built-in humidity sensor — temperature only
- WiFi only — no Zigbee/Thread support, depends on router stability
- App lacks a learning algorithm as advanced as Google Nest's
- E-ink display has no backlight — difficult to read in the dark
- Cloud-dependent — if servers go down you lose remote control
Conclusion
The Netatmo Smart Thermostat is the best value-for-money choice in smart thermostats in Europe. With no subscription, Matter support, HomeKit compatibility, and stunning Philippe Starck design, it fully justifies its €180 price tag. If you're considering zone control, the Smart Radiator Valves increase savings even further. The €120-250/year in energy savings means the thermostat pays for itself in less than two winters — and after that, you're saving pure profit.