The Mill Gentle Air OIL1500WIFI3 is a 1500W oil-filled radiator recommended by Mill for rooms of 18–22 m². Its enclosed white-and-black body sits on an aluminium foot and is designed to provide stable, quiet heat while remaining easy to reposition. Three selectable heat levels — 600W, 900W and 1500W — give you a practical way to match output to the room, while the LED display keeps local settings clear.

WiFi and the Mill App add remote temperature control and scheduling, with Bluetooth used to simplify connection setup. Mill Heat Boost Technology uses the closed radiator shape to move warmed air through the room, while Predictive Heating supports scheduled target temperatures. Open Window Function reacts to sudden temperature drops. Safety features include a tip-over switch, overheat protection, child safety lock and commercial lock, making the radiator a well-equipped connected option for regular home heating.

Connected 1500W oil-filled heating with three power levels, Mill Heat Boost Technology and app-based scheduling.

Ideal For

Key Features

Three power levels for flexible use

Choose 600W, 900W or 1500W depending on the heat required. The radiator’s closed form and Mill Heat Boost Technology are designed to improve how warm air moves away from the heater.

Connected scheduling and remote control

WiFi and the Mill App allow temperature changes and schedules from a phone. Bluetooth assists setup, while Predictive Heating helps the heater work toward scheduled room-temperature targets.

Quiet operation with core safety features

Mill specifies silent operation, a tip-over switch and overheat protection. Child and commercial locks add control over unwanted changes to settings.

How It Compares

Compared with the OIL2000WIFI3, this model has a lower maximum output of 1500W and Mill recommends it for 18–22 m² rather than 24–28 m²; both share app control, three heat settings and Mill Heat Boost Technology.

The Verdict