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At a glance
1500W portable smart heating with WiFi control, PID power regulation, Predictive Heating and IPX4 protection.
The Mill CO1500MAXWIFI3 is a 1500W portable convection heater intended for rooms under 22 m². Its curved white front, freestanding foot and compact footprint make it a flexible option when a living area, bedroom or home office needs additional heat. Mill uses an X-aluminium heating element with a stated maximum surface temperature of 62°C, plus silent operation and an easy-to-read LED display.
WiFi control through the Mill App lets you manage temperature and schedules remotely. Mill PID Wattage Tech reduces output as the target temperature is reached for steadier control, while Predictive Heating can learn room behaviour to help meet scheduled temperatures. Open Window Function responds to sudden temperature drops. The model is IPX4 rated and includes overheat protection, child safety lock and commercial lock, giving it a strong set of practical control and safety features.
The slim format makes particular sense in bedrooms, living rooms and home offices where floor space is at a premium.
What stands out
Control
Control connects the product to a compatible home network for the online or app features supported by this model.
Key features
- 1500W: Power
- under 22 m²: Recommended Room
- WiFi + Mill App: Control
- IPX4, overheat protection and child safety lock: Protection
Compare Similar Models

| Specification | Mill WiFi Max Portable Heater 1500W White | Princess 2000W Smart Convector Heater - White | Princess 2000W Smart Oil Radiator White | Princess 2000W Smart Glass Panel Heater - Black |
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At a glance
Product information
Delivery
- Delivery for this item:
- Estimated delivery:
- A 2-person delivery service is available for large appliances.
Returns
- Changed your mind? Online orders can be cancelled within 14 days of delivery under EU distance-selling rules.
- Faulty goods are covered by your statutory consumer rights, in addition to any manufacturer warranty.
- Need help? Call us on 01 531 0700.



