Important Safety Information
Please read all safety instructions carefully before using the Maestri House Mug Warmer. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Hot Surface: The heating panel becomes very hot during operation. Avoid direct contact with the heating surface. Use caution when placing or removing mugs.
- Do Not Immerse: Do not immerse the mug warmer in water or any other liquid. This product is not waterproof beyond the tempered glass surface.
- Proper Mug Use: For optimal performance and safety, use mugs with a flat bottom and thin walls to ensure good contact with the heating surface. Mugs with thick or concave bottoms may not heat effectively.
- Placement: Place the mug warmer on a stable, flat, heat-resistant surface. Ensure adequate ventilation around the unit.
- Power Cord: Do not let the power cord hang over the edge of a table or counter, or touch hot surfaces.
- Children and Pets: Keep out of reach of children and pets.
- Unplug When Not in Use: Always unplug the mug warmer when not in use or before cleaning.
- Damage: Do not operate the appliance if it has a damaged cord or plug, or if it malfunctions or has been damaged in any manner. Contact customer support for assistance.
Product Overview
The Maestri House Mug Warmer is designed to keep your beverages at your preferred warm temperature. Featuring a sleek design and intuitive controls, it's perfect for home or office use.

Image: Maestri House Mug Warmer, silver model, showcasing its compact and modern design.
Key Features:
- Knob Design: Easy rotary knob for temperature selection and adjustment.
- Glass Heating Panel: Tempered glass surface, waterproof and easy to clean.
- Three Temperature Settings: Adjustable to 113°F (Blue), 131°F (Purple), and 149°F (Red).
- Temperature Display Light: Visual indication of the selected temperature.
- 8-Hour Auto Shut-Off: Safety feature for energy conservation.
- Long Power Cord: 59-inch cord for flexible placement.

Image: Detail of the rotary knob for temperature control.
Setup
Follow these simple steps to set up your mug warmer:
- Unpack: Carefully remove the mug warmer from its packaging.
- Placement: Place the unit on a dry, flat, and stable surface, away from water sources.
- Connect Power: Plug the 59-inch power cord into a standard electrical outlet.
- Initial Cleaning: Wipe the glass heating panel with a soft, damp cloth before first use.
Operating Instructions
Turning On/Off and Temperature Selection:
- Power On: Rotate the knob clockwise from the 'OFF' position. The temperature display light will illuminate, starting from the highest temperature (Red) and cycling through the settings.
- Select Temperature: Continue rotating the knob clockwise to cycle through the three temperature settings. The light color indicates the current setting:
| Light Color | Temperature | Description |
|---|---|---|
| Red | 149°F (65°C) | Highest heat setting, ideal for very hot beverages. |
| Purple | 131°F (55°C) | Medium heat setting, suitable for warm beverages. |
| Blue | 113°F (45°C) | Lowest heat setting, for gently warm beverages. |
- Place Mug: Place your mug, preferably with a flat bottom, onto the center of the heating panel.
- Auto Shut-Off: The mug warmer is equipped with an 8-hour auto shut-off function. After 8 hours of continuous operation, the unit will automatically turn off for safety and energy saving.
- Power Off: To turn off the mug warmer manually, rotate the knob counter-clockwise until it clicks into the 'OFF' position.

Image: Visual representation of the three temperature settings indicated by red, purple, and blue lights.
Video Demonstration:
Video: Official demonstration of the Maestri House Mug Warmer, highlighting its features and ease of use.
Maintenance and Cleaning
Proper maintenance ensures the longevity and performance of your mug warmer.
- Unplug: Always unplug the appliance and allow it to cool completely before cleaning.
- Clean Surface: Wipe the tempered glass heating panel with a soft, damp cloth. For stubborn stains, use a mild detergent and then wipe clean with a damp cloth.
- Do Not Use Abrasives: Avoid using abrasive cleaners, scouring pads, or harsh chemicals, as these can damage the surface.
- Dry Thoroughly: Ensure the unit is completely dry before plugging it back in or storing.

Image: Cleaning the glass heating panel, demonstrating its easy-to-clean surface.
Troubleshooting
If you encounter any issues, please refer to the following table:
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not turn on. | Not plugged in or power outlet issue. | Ensure the power cord is securely plugged into a working outlet. Check the power outlet with another appliance. |
| Beverage is not warming. | Incorrect mug type or poor contact with heating surface. | Use a mug with a flat bottom and thin walls. Ensure the mug is centered on the heating panel. Check if the correct temperature setting is selected. |
| Unit automatically turned off. | 8-hour auto shut-off activated. | This is a safety feature. Turn the knob to 'OFF' and then back to your desired temperature setting to restart. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | MHCW03 |
| Voltage | 220 Volts |
| Wattage | 20 watts |
| Maximum Temperature | 149°F (65°C) |
| Product Dimensions | 4.92"L x 0.98"W x 5.3"H |
| Item Weight | 11.6 ounces |
| Material | Glass |
| Power Source | Corded Electric |
Warranty and Support
For warranty information or customer support, please refer to the documentation included with your purchase or visit the official Maestri House website. Keep your proof of purchase for any warranty claims.