Mr. Coffee Mug Warmer for Coffee and Tea Portable Cup Warmer for Travel Office Desks and Home Black | Gifts for Teachers

This mug warmer works well. I use it every morning and keeps my coffee at a good drinkable temperature while I read the news and do my morning routine. The bottom of the mug does get a bit hot, so be careful, but other than that no complaints. The cable is sufficiently long to place the warmer on your desk or table. I really enjoy this warmer and recommend it.

This is the second time I have purchase this Coffee Mug Warmer. I actually gave my old one away to someone else who really needed it for the day. I told them to keep it and I purchased myself this one again. This thing last forward and can handle the accidental spills. It's easy to wipe down and durable. I have purchased others, newer, cuter versions of a mug warmer and I have gone back to this one due to it's durability. Function is simple, just an one and off switch. Keep my beverage hot all day and the size is perfect for a desk.

OVERVIEW: This does what it is supposed to do. It is not fancy; it is a basic warmer. But it does the trick. For this price point, it is excellent! My office is usually cool, so my coffee and/or tea would never stay warm. This warmer does the trick. I haven't had a cup of room temp coffee or tea since! Love it. CUP TYPE: I do use this with a basic 14 oz. ceramic cup with the "lip" around the bottom. Many have stated that you need a flat-bottomed cup or a metal (like a Yeti) cup, but you don't. I tried a Yeti-type cup once and the entire cup was so hot that I couldn't touch it. Not recommended! START WITH HOT: Please note that this product is designed to keep your beverage warm, not to actually warm it up. You can't start with a cold or room temp beverage and expect it to heat it up. That is not what this one is for. But, if you start with a hot beverage, it will remain hot on this warmer. TEMPERATURE: This product has no heat settings. It is either on or off. But again, for this price point, that's what you get. The plastic housing is slightly warm to the touch, but nothing to worry about. But don't touch the heating plate. It is very hot! APPEARANCE: The heating surface, as many others have mentioned, gets scratched easily by the ceramic cup bottom. As you can see in the photo, mine got scratched also. However, since I have a black cup sitting on it all the time, you really can't see that it is scratched. It doesn't bother me at all. SUMMARY: I do recommend this product if you are looking for something to keep your hot beverage hot. I would recommend unplugging it when you are not around. Others have noted them shorting out when unattended, even if turned off. Mine is plugged into a power strip/surge protector that gets turned off every day when I leave the office, so all of my electronics are completely off when I'm not there. UPDATE: I purchased this in January 2022. It is now September 2025, and it is still going strong! And the scratches in the photo from my original review look exactly like it looks today (but maybe a little dirtier. LOL) I came here today to purchase another one for a different location, but I'm uncertain that it's worth $21. I only paid $11 for it 3.5 years ago. I realize that inflation has been bad recently, but almost double?! I may need to look elsewhere.

I was skeptical given the Black Friday price, but this thing delivers! Given as a gift, my sister pulled it out of the box, immediately plugged it in, and set her cold coffee cup on it. We actually forgot about it and when she came back her coffee was nice and warm. She was very pleased. This is very portable and she is very excited to use it in her home office and is already considering one for her "real" office. Small design won't take up much space on a desk and can use a regular coffee cup - which was an original concern of mine.

It keeps your mug and its contents warm, but turn it on ahead of time because it takes a bit to warm itself up. It's Mr. Coffee, so I expected a little bit more in terms of quality. I have used it a few days and the paint on the hotplate is beginning to chip off. I used just ceramic mugs, so this is clearly a defect in manufacturing. Update: there is no auto-off function. I accidentally left it on overnight with no mug on it, and I returned to find it still on.

OK, I read a number of the reviews posted here before purchasing this mug warmer, and did a little research to check what the power used (wattage) was supposed to be. The manufacturers seem to want to keep this a mystery for some reason -- all of them. There were reports that this Mr Coffee device had the same wattage rating as other similar mug warmers that had decent feedback ratings. So, I decided to try it. The power number mentioned was 17 watts, which sounds about right for a device this size. The watts of power generated is THE most important characteristics of any heat producing device and this Mr Coffee mug warmer seems to live up to the purported 17 Watt rating. They don't put any power or energy information anywhere on the packaging material and there is no information in the small instructions pamphlet either but the bottom off the device says: "120 V 60 Hz 17 W", so, 17 watts it is. Now, if this electrical device consumes around 17 watts, you can assume some of the heat energy is lost to the table and the edges of the plastic housing and if you put your hands around the device, there is some loss there and my desk beneath does get a little warm. So, clearly 17 watts is not going into the cup. But for such a simply made device, like all the others I see advertised too, it appears to generate a majority of the heat energy at the indented area where the cup will sit. And by the way, the heating are where a mug sits is 3-1/4 inches in diameters -- which will accommodate some pretty big mugs. The depressed area where your coffee mug sits gets noticeably warmer than the sides of the device. It is hot but not so hot I can't touch it. I wouldn't want to hold my fingers there for very long but it's not like its glowing red. It's touchable. So, I took it out of the packaging, plugged it in, set a cup of coffee on it, and did a little work -- like maybe twenty minutes. The coffee was a bit cold to start, not even cool, and when I picked the mug up a little later the coffee was warm, the mug was warm.. The mug warmer doesn't heat it to a hot coffee temperature but check it's name -- it isn't supposed to. It "warms" the coffee. As a couple of reviews pointed out, the manufacturers are skirting the boundary of generating enough heat to make it dangerous to be left heating on a desk. You can't have a relatively small, inexpensive plastic device have a red-hot burner on it, not when it's intended use is sitting next to my monitor amidst piles of note and maybe near a textbook or two. If you want really hot coffee, clear a space on your desk and get a true hot plate with which you can also fry bacon. Or get a small stand to hold a microwave. After all that, I was quite pleased with how effective it was in "warming" a drink. If you want it to make your coffee hot hot, you will be disappointed. If you want your coffee to stay warm, it does it's duty.

I got this Mr. Coffee Mug Warmer even though I wasn't originally a big hot beverage drinker. But ever since I started following (or trying to follow!) a low-carb/keto/LCHF diet, I've been having more hot drinks, particularly "Bulletproof Butter Coffee". However, when I drink hot beverages, especially coffee & tea, I drink it VERY SLOWLY, because if/when I drink it fast, it seems to bring on (or worsen!) my issues with Acid Reflux/GERD/heartburn. So it often takes me several hours or sometimes even the entire day (or longer!) just to finish a one regular-sized (like maybe 10-12 oz or so) mug. But, the problem is that because I take my time drinking my coffee or tea, I often end up getting engrossed in some activity (reading, watching something on TV, using the computer, etc.) and my drink inevitably either becomes cold before I've finished having it OR I wind up having to reheat it MULTIPLE times in the microwave, before I'm done. Because I'm trying to reduce the use of the microwave (in hopes of eventually getting rid of it ENTIRELY because of the health risks of microwaves) and I use a BLACK+DECKER Brew 'n Go Personal Coffeemaker for coffee, and a kettle for tea & other hot beverages I got this Mr. Coffee Mug Warmer to keep my drink hot while I take my time drinking it. Before buying this Mr. Coffee Mug Warmer , I looked at/into several different models of mug warmers including those that were AC electric powered (meaning the 2 pronged electrical plug that goes into the wall) AND those that are USB powered. Since this mug warmer seemed to have the highest ratings (boththe most number of ratings AND the highest number of stars) I got this one. Unfortunately, I have to say that I'm sorely disappointed. Almost as soon as I got this mug warmer, I opened it, read the instructions and plugged it in and turned it on. Its a good thing that I was sitting right by it when I started using it, because within minutes, a really smoky odor started developing. At first I couldn't figure out what it was, because the mug was on the warmer, and I didn't SEE the smoke at first, I just SMELLED it. So I went to the kitchen, thinking I might have left the kettle or coffeemaker or stove or oven on, and it had started smoking. But nope. They were all off and cooling (in the case of the coffeemaker) or cold (in the case of the kettle, stove & oven). So I was trying to figure out what that smoky smell was and where it was coming from -- and in the process of sniffing around, I came to the mug warmer, and because the odor was strongest there, and there was nothing else nearby that could be the source, I realized that this mug warmer was smoking! So of course I immediately unplugged it and called Amazon. They were very nice about it, and right away gave me a refund and said I didn't have to worry about sending it back. Now I don't know if I just got a defective one, but frankly I've been too scared to try getting another one out of fear that it might be fire hazard. I'm still looking to get a mug warmer so that I don't have to keep reheating my drinks in the microwave or diluting it by adding kettle-heated hot water to my drink when it gets cold. But in the meantime, that'll have to do, until I either find a better mug warmer OR get up my courage to try again with this Mr. Coffee Mug Warmer . Very disappointing!! ★ 1 STAR!!!!

I have been using this warmer for over a year, and I am very happy with it. I don't use flat bottom coffee cups, and my coffee cups are generally larger than a standard cup. While the black paint on top does scratch off it doesn't deter from the warmer doing its job. It keeps my coffee drinkable temperature at work all day long. It is a size that works for most smaller areas. It works so well that I am back to buy another one for my home. I saw a comment that states that you can touch the surface. I guess you can touch it at your own risk as it will cause pain.