Cosori Coffee Mug Warmer
- Maximum Temperature: 194 °F
- Power Source: Corded electric
- Wattage: 24 watts
- Material Type: Stainless Steel
Last refreshed Jun 15, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
Keeps a full cup drinkably warm with precise temperature control, though the weight-sensing switch can be finicky with light mugs. Works well with a heavy, flat-bottomed cup on a level surface.
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ASIN: B089SGRVBJModel: CO294-CWCategory: Beverage Warmers
Overview
The COSORI CO294-CW is a digital mug warmer with a stainless steel heating plate adjustable from 77 to 194 degrees Fahrenheit in 1 degree steps. A pressure sensor requires a cup of at least 10.4 ounces before it will heat, and it shuts off automatically after 8 hours.
- 304 stainless steel heating plate
- Touch controls with LCD digital display
- Pressure sensor requires 10.4 oz minimum cup weight
- Fahrenheit and Celsius display options
Who it's for
Good for desk workers who nurse a cup over an hour and want it to stay drinkably warm rather than go cold. Not for anyone who wants near boiling reheating, or who mostly uses light, oddly shaped, or non flat-bottomed mugs.
Pros and cons
- Precise digital control in 1 degree steps
- Remembers last temperature setting after power off
- Auto shuts off after 8 hours
- Pressure sensor needs a heavy, flat-bottomed cup to activate
- Can shut off early as a cup gets lighter
- Slow to reach the highest temperature setting
Specifications
| Brand | Cosori |
|---|---|
| Model | CO294-CW |
| Dimensions & fit | |
| Item Weight | 0.5 pounds |
| Item Dimensions L x W x H | 5.4 × 4.3 × 0.7 inches |
| Capacity & performance | |
| Maximum Temperature | 194 °F |
| Power & efficiency | |
| Power Source | Corded electric |
| Wattage | 24 watts |
| Voltage | 110 volts |
| Construction & materials | |
| Material Type | Stainless Steel |
| Color | Stainless Steel |
| Included components | |
| Included Components | Adapter*1, Coffee Warmer*1, User Manual*1 |
| Unit Count | 1 |
| Other details | |
| Number of Trays | 1 |
Closest rivals on specs
Evelots Cup Warmer- Item Weight 0.5 vs 0.44 pounds (+14%)
- Wattage 24 vs 17 watts (+41%)
Salton Mug Warmer- Item Weight 0.5 vs 0.4 pounds (+25%)
Frequently asked questions
Why won't my COSORI mug warmer turn on?
It requires a cup weighing at least 10.4 ounces placed on the heating plate on a flat, level surface before it will activate.
Can the COSORI CO294-CW boil my coffee?
No, Cosori states it is built to keep beverages warm, not to cook or reheat them to boiling.
Does the COSORI mug warmer shut off by itself?
Yes, it automatically shuts off after 8 hours of activity, and the pressure sensor also cuts heat if the cup gets too light.