How long (about) do they keep coffee hot?
481817
They are insulated to keep beverages at temp, but these kind have no lid. I don't drink coffee, but I would guess about the same as a coffee mug since the heat can escape through the open top. I believe there are tervis cups with lids that might work better for you
86324
Coffee is best made at exactly 192°, no more. So one the water is boiling, let it cool for at least 1.5 to 2 minutes.
1779003
The beverage stays very hot for 2-3 hours. It will begin to cool down, but is still quite warm after the 3 hours. If you keep the lid in the closed position, it will stay very warm for a couple more hours.
940676
I actually have not used this mug for coffee, I have however used it for water and I'm not kidding when I say water stays cold for up to 24 hours. It's amazing. Sorry I couldn't help with the coffee question.
1267243
Kinda like a thermos. We are a little disappointed in the length of time it keeps the coffee hot. We are not real big coffee drinkers, tho it keeps the coffee kinda hot for a couple of hours. When the pot quits dripping the coffee the heater shuts off. It is okay for our use.
110893
The Carafe does will keep the coffee hot for a few hours. I come home from work and it is lukewarm after 12 hours. Zap it in the microwave if you need to.
2001238
It takes a good 20 minutes to a half hour after it's been brewed to get good and hot. After it's first been brewed, it's not as hot as we'd like. But, it does keep the coffee hot after that until it automatically shuts off two hours after it's been brewed.
2219644
It seems to keep the coffee warm or hot for a very long time - about as long as it takes to drink.
363958
The thermal carafe will not reliably keep the coffee hot for more than 2 hours. BUT, it never lasts more than 30 minutes in our house so it has never been an issue.
1403693
I have only used this for coffee. I pour boiling water in it and let it sit for 10 minutes. Pour out the hot water and add the hot coffee. The coffee stays warm till the end of the day even after opening it several times. I left this home by accident one day and found the coffee still warm after 12 hours.
1555439
Around an hour. The plastic lining changes the flavor of coffee however, I would highly suggest a thermos with a double walled stainless steel lining.
1257967
After brewin the coffee maker remains on for 2 hours. Even after that amount of time, the coffee will still be hot for another 30 to 45 minutes.
1083798
The coffee stays hot only about 1/2 hour. It is double walled stainless with no insulation.
2184719
The coffee stays hot for a while, but I'm not really sure how long since I have never left it on for hours.
1877888
It depends upon the mug size as well as your flavor setting (steeping time.) Typically 5-7 minutes for a large (16oz) cup.
2105274
The coffee is hot enough. I had two of these units fail on me, however. (Which is too bad because I really liked them while they worked.)
2284571
You can feel the heat escaping from the outside of the cup immediately. The liquid remains hot for maybe 15 - 30 mins depending on the temperature of the liquid when poured.