1. Introduction
This instruction manual provides essential information for the safe and efficient operation of your Mill Gentle Air WiFi Oil-Filled Heater 1500W. Please read this manual thoroughly before installation and use, and retain it for future reference. This heater is designed to provide gentle, consistent heat for rooms measuring 18 to 22 square meters.

Image 1.1: Mill Gentle Air WiFi Oil-Filled Heater 1500W, showcasing its design and smart app integration.
2. Important Safety Information
Always observe basic safety precautions when using electrical appliances to reduce the risk of fire, electric shock, and injury. This heater is equipped with safety features for unsupervised use.
- Do not cover the heater. Overheating can occur if the heater is covered.
- Ensure the heater is placed on a stable, level surface to prevent tipping.
- Keep flammable materials (curtains, furniture, etc.) at a safe distance from the heater.
- Do not use the heater in bathrooms, laundry areas, or similar indoor locations where it may come into contact with water.
- Unplug the heater when not in use.
- This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.

Image 2.1: The heater in a bedroom, highlighting its safety features and recognition as a 'Smart Home Product of the Year'.
3. Package Contents
Verify that all components are present and undamaged upon opening the package. The standard package should include:
- Mill Gentle Air WiFi Oil-Filled Heater 1500W (Main Unit)
- Feet/Base Assembly
- Screws for Feet Assembly
- Instruction Manual
4. Setup
4.1 Assembling the Feet
- Carefully unpack the heater and all components.
- Place the heater on its side on a soft, protective surface to avoid scratching.
- Attach the feet/base assembly to the bottom of the heater using the provided screws. Ensure they are securely fastened.
- Return the heater to an upright position.
4.2 Placement
- Place the heater on a firm, level surface.
- Ensure there is adequate clearance around the heater for proper air circulation. Maintain a minimum distance of 10 cm from walls and other objects.
- Do not place the heater directly below a power outlet.
- The heater is suitable for rooms between 18 and 22 square meters.

Image 4.1: Heater dimensions and visual representation of its compact design.
5. Operating Instructions
5.1 Initial Power-Up
- Plug the heater into a grounded electrical outlet.
- Turn on the main power switch, usually located on the side or back of the unit.
- The LED display on the front panel will illuminate.
5.2 Manual Temperature Control
Use the control dial and buttons on the front panel to set the desired temperature. The LED display will show the current and target temperatures.
5.3 WiFi Connection and App Usage
The Mill Gentle Air heater features integrated WiFi for smart control via the Mill Smart app.
- Download the Mill Smart App: Search for "Mill Smart" in your smartphone's app store (iOS or Android) and install it.
- Create an Account: Follow the in-app instructions to create a user account.
- Add Device: In the app, select the option to add a new device. Follow the on-screen prompts to connect your heater to your home WiFi network. This typically involves putting the heater into pairing mode (refer to the heater's display or manual for specific instructions) and entering your WiFi credentials in the app.
- Remote Control: Once connected, you can remotely adjust the temperature, set schedules, monitor energy consumption, and manage multiple heaters from anywhere.
- Over-the-Air (OTA) Updates: The app facilitates firmware updates for your heater, ensuring optimized performance and access to new features.

Image 5.1: Heater providing comfortable warmth in a room, controlled via the Mill Smart app.

Image 5.2: The Mill Smart app interface, highlighting energy saving capabilities.
6. Key Features
- Gentle Air Technology: Provides a soft, consistent heat without drying out the air, making it suitable for individuals with allergies or sensitivities.
- Mill Heat Boost Technology: Heats rooms up to 29% faster than standard oil-filled radiators, ensuring rapid comfort.
- Silent Operation: Designed for quiet performance, ideal for bedrooms, offices, or living areas.
- Mill Predictive Heating: An intelligent function that learns your habits and adjusts power levels automatically to optimize energy consumption.
- Energy Efficiency: Proven to reduce energy consumption by up to 30% through smart control and efficient heating methods.
- Advanced Safety: Includes anti-tip protection and overheat protection for safe, unsupervised operation. Complies with ISO14001, BSCI, and European certifications.
- Norwegian Design: Features a sleek, minimalist Scandinavian aesthetic with rounded corners and a floating aluminum base, blending seamlessly into modern interiors.

Image 6.1: Visual summary of the heater's core features and benefits.
7. Maintenance
7.1 Cleaning
- Always unplug the heater and allow it to cool completely before cleaning.
- Wipe the exterior surfaces with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Ensure no water enters the internal components.
7.2 Storage
When not in use for extended periods, store the heater in a cool, dry place, preferably in its original packaging, to protect it from dust and damage.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Heater does not turn on. | No power, main switch off, or safety cut-off activated. | Check power cord connection, ensure main switch is on, reset circuit breaker if tripped. Allow heater to cool if overheat protection was activated. |
| Heater not heating effectively. | Temperature setting too low, room size too large, or obstructions. | Increase target temperature. Ensure heater is not covered and has adequate clearance. Verify room size is within recommended range (18-22 m²). |
| WiFi connection issues. | Incorrect WiFi password, weak signal, or router issues. | Ensure correct WiFi password. Move heater closer to router. Restart router. Re-attempt pairing process via Mill Smart app. |
| Unusual noises. | Expansion/contraction of materials (normal), or loose components. | Minor clicking sounds during heating/cooling are normal. If loud or persistent, discontinue use and contact support. |
9. Specifications
| Feature | Detail |
|---|---|
| Brand | Mill |
| Model Number | OIL1500WIFI3 Black |
| Color | Black |
| Power | 1500W |
| Voltage | 230 Volts (AC) |
| Dimensions (L x W x H) | 34.4 x 15 x 65.6 cm |
| Item Weight | 7.95 Kilograms |
| Heating Method | Radiant (Oil-Filled) |
| Special Feature | Electronic Thermostat, WiFi Connectivity |
| Heat Coverage | 18-22 m² |
| Indoor/Outdoor Use | Indoor |
| Country of Origin | China |
10. Warranty and Support
Mill products are manufactured to high-quality standards. For warranty information, please refer to the documentation included with your purchase or visit the official Mill website. If you encounter any issues or require technical assistance, please contact Mill customer support through their official channels.
For further assistance, please visit the Mill Official Website.





