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Mr. Coffee Mug Warmer for Office/Home Use, MWBLK

4.1 out of 5 stars 4,433 customer reviews
| 207 answered questions

Price: $11.49 Free Shipping for Prime Members | Fast, FREE Shipping with Amazon Prime
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Ships from and sold by Amazon.com. Gift-wrap available.
Black
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  • Easy to tote and take anywhere
  • Use for coffee, tea, hot cocoa & more
  • Surface easily wipes clean
  • On light indicator,This mug warmer is 17 watts.
  • On/off switch
  • Convenient cord length for use almost anywhere
51 new from $7.95 1 used from $8.98
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From the Manufacturer

Product Description

Color:Black

Keep your favorite mug of coffee, tea or cocoa hot when you want it. Convenient on/off switch with on light indicator. Extended cord length to use almost anywhere. This will be your favorite gadget!


Product Information

Color:Black

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Customer Reviews

Top Customer Reviews

Color: Black
I bought my Mr. Coffee mug warmer locally at a store. I wasn't expecting much out of it because of the reviews about it here on Amazon, but hey it was really cheap, under ten bucks. I was pleasantly surprised at how it kept my cup of tea consistently very warm throughout the day while I'm at work. This is how hot the heating plate can get: put a drop or two of water on it, and the drops will sizzle and evaporate quickly. The key to getting the best experience out of using the Mr. Coffee mug warmer is to use with a cup of HOT tea/coffee/soup/whatever. It won't make your cold beverage hot again (use a microwave for that).
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By T Schwa on December 15, 2005
Color: Black
As with everything, I went on a search of all mug warmers in the universe before buying this one. I found a universal complaint of ALL mug warmer reviewers (of any brand) was "doesn't get hot enough" (especially the USB models). I think the manufacturers walk a thin line between "doesn't get hot enough" and setting the house on fire.

Initially, I tried putting a cold cup of coffee upon my new Mr. Coffee and was disappointed in the warmer's ability to heat up an already cold cup of coffee. (tried both metal and ceramic mug)

The good news is that if you put a fresh hot cup of coffee right from the coffee maker onto the "burner" that it does a pretty good job in keeping it hot from that point. I review this as satisfactory performance and give extra credit for its slim and sleek design.
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Color: Black Verified Purchase
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.
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Color: Black Verified Purchase
I've had it for several months now, using it daily, and it's performed very well! Here is the deal with temperatures. If you place a hot cup of tea/coffee on it, it keeps it hot! Not the burn your tongue hot. As you drink, the cup becomes less full, and actually heats the contents more. Also, I've placed a half full cup of cold coffee on it, and it heated it up to a nice warm temperature within a few minutes. The heating plate will accommodate larger coffee mugs. The only disadvantage I've noticed with it is the counter gets rather warm were it is placed, so keep flammables and paper away to be safe. Also it does not have a auto shutoff that I'm aware of, however I have it plugged into a power box with motion control, so if I leave my desk for a long period it will shut off. I also try to make sure the bottom of my mug is dry before setting the cup down on it, to keep the heating plate clean. So if your like me and like sipping on tea or coffee at the office, with out going to refill for a hot cup every time your liquids get cold, then you'll be happy with this warmer.
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Color: Black Verified Purchase
I bought this to keep my tea warm I figured I could use it on the cup but actually decided to try it on the pot I have a small 24oz pot and I sip on tea all day and it stays quite hot to where I have to let it cool a bit before I can drink it hot.
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Color: Black
I don't know why so many people have trouble with this item. My mother-in-law gave this to me well over a month ago and I think it's the greatest thing since TIVO. The key is to use a regular size cup with a flat bottom (not the ginormous ceramic cups that are more like SOUP bowls and only have a tiny bottom), and to put it on the warmer as soon as you pour the coffee into the cup. It WILL keep it not just warm, but HOT. It is 3:30 in the afternoon right now and I am still sipping on a HOT cup of coffee that I poured at 8:00 this morning. The lower the liquid gets, the hotter it gets, so be careful. I've also found that putting a piece of paper over the cup (like a piece of junk mail or an old CD case--without the CD inside, of course) will infinitely increase the heat factor, though it's not too safe and really isn't necessary (I've done it a few times when the dogs were shedding and my husband wanted the ceiling fans on - didn't want dog hair in my cup, so I covered it...and it was so hot I burned my tongue.) Regardless, this item (the Mr. Coffee Mug *WARMER*) is not meant to heat up cold liquids; that's what microwaves were invented for. This is a great product when used properly and at the very least, it does what it was intended to do: keep beverages warm.
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