How long does the "heat" last?
1442314
The heat lasts 10-15 minutes then starts cooling down, but it does feel really good.
1442315
about 30 - 45 minutes depending on the power of your microwave and frequency of use.
1442316
Once you wear it, with the help if your body heat and insulation of your clothes it should last for 30 to 45 minutes.
1442317
A good 20-30 minutes if you heat it just right. That is the challenge, though, is to find the right amount of microwave time. It is a must for me every morning to loosen up my low back. I absolutely need it. Hope you find relief.
1442318
I heat mine for 1 min, 15 seconds, in a 1100 watt microwave. You have to be careful about heating it too long, or you will burn a hole in the material, and cause the packing to leak out. I am buying another one now, because this just happened to me. If you reheat it after using it, and you were still wearing it right before you reheated it, you must reduce the time in the microwave, from when you heat it from room temperature, because the extra heat from your body will cause it to take less time to heat. Also you can burn yourself if you overheat it.
1442319
It depends on how long it is first heated in the microwave. We use it a lot and get between 30-40 minutes of heat from a 3 minute warmup, as per the directions
937778
As best I can tell, it does not turn colors. I can usually feel the heat within 5-10 minutes. It can get uncomfortably hot before it times out, requiring it to be turned off.
2204010
I like it. It takes about 10 min to heat up. Cover it when preheating. I use it in my semi truck. It will eat your battery in two hours, so reduce the heat to less than a half for longer use
654613
If you heat it for about 6 minutes, it gets pretty darn hot. It will stay warm for about half an hour.
132306
4 to 5 hrs on high.Mostly to add some atmosphere than actual heat. If looking for heat, needthe lamp post style heaters.
577313
Have not checked the temp after that long but doubt it will stay warm for 4-1/2 hours. I would say more like 30 minutes.
218270
Not long at all..I woke up after 3 hours or so and it was HOT. Not very helpful for sleeping through the night, but nice for very short periods of time.
1131982
As soon as the cooling cycle stops. I think that is usually about ten minutes
785063
it took a while, sorry I can't really remember, several days I think; then even once after it had been off for a couple days. for me the bigger issue is the lack of heat compared to the older model.
1576427
the heat can be reactivated as long as it's within the usual 18 to 20 hours of use. All you have to do is shake it a couple of times and then let it rest under a pillow or blanket undisturbed for about 10 minutes. This can be repeated as many times as you need to. If you or anyone else has any more questions feel free to ask me ....my mother uses these every day and we've become something of an expert on the subject! Have a happy day everyone!
2181144
Not very long if you plan to take a shower like you would at home, maybe 3-5 min. Depends on how hot you like it.
2161299
No, Not long at all. I've never timed them, but certainly no longer than 2 minutes. The quick heat up is my favorite feature.
123752
It depends on the heat and humidity around you. I waited 8-12 hours to be safe, but some days it felt alright after only 3. But I also live in AZ.
1136333
The longest that I've used this was about 90 minutes and the fan still worked fine. It doesn't get hot or anything but it is really loud.
2154510
We have had no problems with it overheating even when we use it a lot. I think the directions say not to use for more than 45 minutes at time and we probably stick to that pretty well.
1093498
Not sure exactly, we have six people in our house so usually doesn't last long. I know its still hot after 3-4 hours.
2141662
It takes about 10 to 15 minutes maybe 20 depending on the temperature you want to heat up then let the sweat begin. I hope that helps. Thanks