The Mill Invisible Smart WiFi panel heater, 4th generation, is a high-tech, energy-efficient panel heater with a clean, modern look that blends seamlessly into any type of home. Mill heaters are designed in Norway and feature a minimalist Scandinavian style. Thanks to support for Matter, Zigbee 3.0, and Wi-Fi, it’s one of the most future-proof heaters on the market—ready for a smart home no matter what platform you use.
With the Milli app, you can easily control the temperature from anywhere and always keep track of your energy consumption. With the weekly schedule, the temperature automatically adapts to your daily routines, ensuring optimal comfort and preventing excessive energy consumption when you’re away from home or asleep. The heater features Mill Predictive Heating™ and Mill PID Wattage Tech™ technologies, which use machine learning and precise power control to maintain a stable temperature while minimizing energy consumption. This gives you an energy-efficient and comfortable heating experience that adapts to your habits and the needs of your space. The elegant, rounded front panel and streamlined design blend seamlessly into the wall. The panel heater provides pleasant warmth, operates quietly, maintains a low surface temperature, is safe to leave unattended, and is IPX4 water-resistant, making it suitable for use in bathrooms.
Features and Specifications:
Model: PA1000WIFI4
Power: 1000W
Recommended room size: 12–16 m²
WiFi + Zigbee 3.0 + Mill app
LED display for easy monitoring
Designed in Norway
Technical features:
Heating element: X-aluminum – high efficiency, low surface temperature (max 72 °C)
Fast and even heat distribution throughout the room
Low-energy consumption control
Mill PID Wattage Tech™
Mill Predictive Heating™
Open-window function
Quiet operation
Safety and installation
Easy to install
yourself Wall-mounting bracket and screws included
Cord length: 130 cm, on the right side
Safe to leave unattended
Suitable for bathroom use (IPX4)
Overheating
protection Child safety lock
Commercial lock (Commercial Lock)
Color: white
Dimensions (L x H x D cm): 85.0 x 40.0 x 8.6
Connectivity:
Easy connection to a Wi-Fi network via
Bluetooth 5.2 Connectivity: Wi-Fi 2.4 GHz (Wi-Fi 6), Zigbee 3.0
Integrations: Matter (Google Home, Apple Home, Amazon Alexa, etc.), Homey, Tibber
Benefits:
Mill PID Wattage Tech™
The first panel heater with PID technology. Once the desired temperature is reached, the device maintains it steadily by reducing power. This results in more even heat distribution and fewer temperature fluctuations.
Mill Predictive Heating™
The heater learns how quickly the room heats up or cools down and starts heating at the right time to reach the desired temperature exactly at the selected time.
Easy Bluetooth Connection
: The device automatically connects to your Wi-Fi network, regardless of your router.
Quiet Operation
: Mill Wi-Fi panel heaters operate silently—you won’t hear any clicking sounds as the temperature changes.
Child Safety
Lock: In the Mill app, you can activate a child lock that blocks all heater buttons, preventing accidental changes to the settings.
Commercial
Lock Allows landlords to control temperature and energy consumption via the Mill app.
The world’s first panel heater with
Matter support: MILLI’s 4th-generation WiFi panel heaters support Matter, allowing you to control the temperature in the same app alongside other smart home devices. Additionally, the temperature can be adjusted using voice control (Amazon Alexa, Apple Home, Google Home).
All Mill WiFi devices (except Gen 1) can also be controlled via Homey.