Portable Immersion Water Heater

this is a great travel product. At our hotel we did not have a coffee or tea hot water ---this was a great product.. heated the water in less than 5 minutes. highly recommend....

It is helpful to know a little about how a product like this works so you can avoid misuse and the associated frustration. The company I work for makes residental water heater elements. I have sat through countless meetings with engineers about how electric elements work...so I have a little more knowledge of submersible elements. This item is designed in an identical way to a home electric water heater element. Electricity flows through a copper core in the center of the element producing heat, which is then dispersed throughout the liquid it is submersed in. If the element is not A. fully submersed or B. taken out even for a second while plugged in....it will dry fire. What is a dry fire? The tiny copper wire inside the element overheats in one spot and breaks...stopping the flow of electrons and thus the heat. There is no way to fix it...it is just game over...throw it away. ANY plumber will tell you that tank dry fires are the #1 cause of element failures in residential water heaters.Thus you can see the opportunity to just by a very brief careless moment to dry fire this element. Don't have it submersed to the lip of the cup...congratulations...you just dry fired it, throw it away. Took it out of the cup before unplugging it? Congratulations...you just dry fired it, throw it away...game over.I have been using mine for many months while traveling and have not had an issue at all...however I am quite vigilant about how I use it...careful to fill the cup to the top...even covering the clip on the handle...and then I unplug it about 30 seconds before taking it out of the cup. If you do this...you won't ever have a problem....if you do? You'll be on Amazon venting your anger with a crappy review over your own negligence. Since no hotel in Las Vegas has in room coffee...this little bably saves me $4.00 a day plus an early AM trip to the lobby. This is always on my Vegas or international travel "must take" list, along with some Starbucks instant coffee...mug and sugar. If you are a methodical vigilant person...don't be scared by the bad reviews. If you are scatter brained morning multitasker....save your Money.

I purchased this one because I trusted the company. It advertised "Warm water in seconds, Boiling water in minutes". After 20 minutes the temperature was barely 160 degrees. Disappointed in product and company. Returning for refund, not exchanging.

I brought this with me on a trip to Niger because the hotel I stay in doesn't have a kettle. They have 220v so it heated the water quite quickly. I like that it's compact, has a small carrying case, and came with a small adapter.A few notes:(1) This may go without saying, but the amount of time it takes to heat the water is proportional to the amount of water you're trying to heat(2) It's harder than you might think to make sure the metal portion stays covered by water the entire time it's plugged in; be very careful!(3) I tried it with soup once and it didn't quite work (I just heated the water, not the soup). I'm going to try it again at some point, but I don't think the water was quite hot enough. It left the soup "crunchy". It worked for instant oatmeal.(4) I tried it with a tall thermos and this didn't work. The water appeared boiling at the top but I could tell when drinking it that the water below had not been properly heated. A wide, squat mug worked best.(5) I purchased a wide ceramic mug at the grocery store for this and it worked great (will probably get a metal camping mug for future travels). In a way, I think it was better than a kettle because the mug heated up as the water heated up (akin to what it would be to "hot the pot"). This meant that my tea steeped beautifully, though it would have been a bit problematic if you were in a hurry because it took longer to cool off -- in which case, I would recommend heating up in the mug and transferring (carefully) to a thermosAll in all, I'm happy with this purchase and will be bringing it along with me on my travels to places I know or suspect don't have kettles.

I got one of these years ago for travel purposes. I was thrilled to see them again and purchased one for my Mom who was in a skilled nursing unit for rehab. She cannot stand lukewarm or cold coffee, which is the norm in most facilities of this type. The warmer is small and easy to use. It should not be used by anyone who doesn't understand the heat it produces (children, adults with cognitive limitations) or have the fine motor dexterity to use safely, since it hangs on the edge of the cup or bowl.It is compact, sturdy and works great for heating water for instant drinks, tea and warming hot drinks or soups in hotel rooms that do not provide a microwave. Bought a new one to keep in my travel items. Want to conserve water? Instead of running the faucet waiting on hot water to cleanse your face, keep a mug handy to instantly have warm water without running gallons to get it.With COVID changing the way we approach travel & lodging, the less I have to touch in a hotel room the better. Does anyone out there think the hotel staff actually cleans & sanitizes the "in room" coffee pots or microwaves?Reduce the risks...take your own sanitizer & one of these warmers. This is a great gadget for multiple purposes & travels well.