Introduction
The Mr. Coffee Mug Warmer is designed to keep your hot beverages, such as coffee, tea, or cocoa, at a consistent warm temperature. This device is ideal for use in various settings including offices, homes, and travel, ensuring your drink remains enjoyable for longer periods.

Image: The Mr. Coffee Mug Warmer in black, featuring its simple design with an on/off switch and a red indicator light.
Important Safety Information
Please read and understand all safety instructions before using this appliance. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Electrical Safety: Do not immerse the warmer, cord, or plug in water or other liquids. Do not operate with a damaged cord or plug.
- Heat Safety: The heating surface becomes hot during operation. Avoid direct contact with the heating plate. Allow the unit to cool completely before cleaning or storing.
- Placement: Place the mug warmer on a flat, stable, heat-resistant surface. Ensure adequate ventilation around the unit.
- Intended Use: This appliance is designed solely for maintaining the warmth of hot beverages in appropriate mugs. Do not use it to heat cold liquids from scratch or for any other purpose.
- Condensation Warning: Do not place cold or frozen beverages on the warmer, even when it is off. Condensation can drip into the unit, potentially causing damage or an electrical short circuit.
- Children: Keep out of reach of children. This appliance is not intended for use by children.
- Unplugging: Always unplug the mug warmer from the electrical outlet when not in use and before cleaning.
Setup
- Unpack: Carefully remove the mug warmer from its packaging. Retain packaging for future storage or transport if desired.
- Placement: Select a flat, stable, and dry surface for the mug warmer. Ensure it is away from water sources and flammable materials.
- Power Connection: Plug the power cord into a standard electrical outlet. The unit is now ready for use.
Operating Instructions
The Mr. Coffee Mug Warmer is designed for simple operation to keep your hot beverages warm.
- Prepare Beverage: Pour your hot coffee, tea, or other beverage into a suitable mug. Ceramic or glass mugs with flat bottoms are recommended for optimal heat transfer.
- Place Mug: Place the mug containing your hot beverage onto the center of the mug warmer's heating plate.
- Turn On: Locate the ON/OFF switch on the side of the unit. Slide the switch to the "ON" position. A red indicator light will illuminate, signaling that the warmer is active and the heating plate is warming.
- Maintain Warmth: The mug warmer will maintain the temperature of your beverage. Note that this device is intended to keep already hot beverages warm, not to heat cold liquids to a hot temperature.
- Turn Off: When you are finished using the mug warmer, slide the ON/OFF switch to the "OFF" position. The indicator light will turn off. Unplug the unit from the outlet when not in use.

Image: A white mug on the Mr. Coffee Mug Warmer, demonstrating its use to keep beverages warm.

Image: Detailed view of the mug warmer's ON/OFF switch and indicator light, along with its approximate dimensions.

Image: The mug warmer in use with a black mug, illustrating its versatility for various hot beverages beyond just coffee.
Maintenance
Proper care and maintenance will ensure the longevity and optimal performance of your Mr. Coffee Mug Warmer.
- Cleaning: Always unplug the unit and allow it to cool completely before cleaning. Wipe the exterior and heating plate with a damp cloth. Do not use abrasive cleaners or scouring pads, as these can damage the surface.
- Heating Plate Care: The coating on the heating plate may show signs of wear over time with regular use. This is normal and does not affect the functionality of the warmer. Clean gently to preserve the surface.
- Storage: Store the mug warmer in a dry place when not in use.
Troubleshooting
If you encounter issues with your Mr. Coffee Mug Warmer, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Warmer does not turn on / Indicator light is off | Unit is not plugged in or switch is off. No power to outlet. | Ensure the power cord is securely plugged into a working electrical outlet. Slide the ON/OFF switch to the "ON" position. Check if the outlet is functional by plugging in another appliance. |
| Beverage is not staying warm | Mug is not suitable for warming. Beverage was cold when placed on warmer. | Use a ceramic or glass mug with a flat bottom for best results. Ensure the beverage is already hot when placed on the warmer, as this device maintains warmth rather than heating from cold. |
| Unit stopped working after liquid contact | Liquid entered the internal components, causing a short circuit. | Discontinue use immediately. This indicates potential damage and a safety hazard. Do not attempt to repair. Contact customer support for assistance. |
Specifications
- Model Number: MWBLKPDQ
- UPC: 072179223504
- Wattage: 17 watts
- Item Weight: Approximately 7.4 ounces (0.21 Kilograms)
- Product Dimensions: 8.6" L x 5.2" W x 1.3" H (5.12 x 1.1 x 7.48 inches)
- Material: Plastic (body), Metal (heating plate)
- Color: Black
- Power Source: Corded Electric
Warranty
The Mr. Coffee Mug Warmer MWBLKPDQ comes with a 1-year limited warranty. This warranty covers defects in material and workmanship under normal household use from the date of purchase. For specific terms and conditions, please refer to the warranty documentation included with your product or contact customer support.
Support
For any technical issues, product inquiries, or warranty claims, please contact the manufacturer directly. Refer to the contact information provided in your product packaging or visit the official Mr. Coffee website for support resources.
You can also visit the Mr. Coffee Store on Amazon for additional product information and support.





