The Mill Invisible Smart WiFi PA1300WIFI4 is a 1300W Gen 4 wall-mounted panel heater recommended for rooms of 15–19 m². Its white steel front and shallow profile are designed to sit neatly against the wall, while the X-aluminium heating element provides silent, even heat. Mill PID Wattage Tech can reduce power as the set temperature is reached, and the LED display provides a clear local readout.

Connectivity is a major part of this model: WiFi, Zigbee 3.0 and the Mill App are supported, with Bluetooth 5.2 used to simplify setup. Mill also lists Matter compatibility for integration with supported smart-home ecosystems. Predictive Heating and Open Window Function automate common heating tasks, while IPX4 approval broadens installation options. Overheat protection, child safety lock and commercial lock are verified. The supplier EAN should be checked because current exact-model listings show a different GTIN.

1300W Gen 4 wall-mounted smart heating with WiFi, Zigbee 3.0, Matter support, PID control and IPX4 protection.

Ideal For

Key Features

Gen 4 connectivity

The PA1300WIFI4 supports WiFi, Zigbee 3.0 and the Mill App, with Bluetooth 5.2 assisting setup. Matter compatibility adds a route into supported Google Home, Apple Home and Amazon Alexa environments.

Power control built around comfort

Mill PID Wattage Tech reduces output as the target temperature is approached, while Predictive Heating learns how the room heats and cools to support scheduled targets.

Wall-mounted and bathroom rated

Mill supplies this model as a wall-mounted panel heater and rates it IPX4. The X-aluminium element is designed for silent operation, and overheat protection plus locking functions are specified.

How It Compares

Compared with the 700W PA700WIFI4, this 1300W Gen 4 model keeps the same smart platform and IPX4 rating but increases Mill’s recommended room range to 15–19 m².

The Verdict