foto: YouTube idenya ide

Learn an easy way to keep your thermos water hot at no extra cost.

  17 Maret 2025 14:00

Brilio.net - Thermos is a tool that you often use to keep water hot. Its portable design makes it easy to carry when traveling. However, over time, the function of the thermos can decrease. A thermos that was originally able to store hot water for a long time, may only last 1-2 hours. If this happens, many people choose to throw away the thermos and replace it with a new one.

In fact, if you know the trick, the water in the thermos can stay hot for days. One of these tricks was shared by YouTube user idenya ide. In one of his videos, he shows how to keep water in a thermos hot for up to a week at no cost, with just simple ingredients that you can easily find.

"If you have a thermos at home that is no longer functioning properly, it only retains heat for 1 or 2 days. Here are some tricks and solutions so that the thermos can last for 5 days or even a week and retain heat," he said.

easy tricks to keep water in a thermos hot for up to a week  various sources

photo: YouTube the idea the idea

As reported by BrilioFood , the material used is used rags. First of all, prepare some used rags that are no longer used. Don't forget the thermos that will be repaired. Next, use a screwdriver to open the bolts at the bottom of the thermos. If so, turn the black hole at the bottom of the thermos and remove the bottom of the thermos by turning it.

easy tricks to keep water in a thermos hot for up to a week  various sources

photo: YouTube the idea the idea

Once opened, you will see a stainless steel tube and a white rubber seal inside the thermos. Then take the tube and seal. Before the tube is reinstalled into the thermos, cover the tube with a used rag. Make sure the rag covers the stainless steel tube well.

easy tricks to keep water in a thermos hot for up to a week  various sources

photo: YouTube the idea the idea

"There is an air cavity inside, while the plastic material is thin. So at night the plastic actually conducts cold air so that it becomes hot (the thermos) and is not durable," he added.

Once done, reinstall the seal and insert the tube into the thermos. Next, close the bottom of the thermos again by turning it. Reinstall the bolts with a screwdriver so that the thermos position is really right and tight. After the stainless steel tube is coated with cloth, the thermos will function properly again. The thermos can also be used to store hot water for up to a week.

"There is no air space inside the thermos. So the thermos will always stay hot," he concluded.

How to care for a thermos so it doesn't leak easily

To care for a thermos so that it doesn't leak easily, you can take the following steps:

1. Choose a quality thermos

Choose a thermos made of high-quality, durable material. Also, make sure the lid is made of strong, tight-fitting material.

2. Check and clean regularly

Check the thermos regularly to make sure there are no cracks or damage to the lid or body of the thermos. Clean the thermos regularly in the right way to prevent the formation of scale or mold that can cause leaks.

3. Use it correctly

Use the thermos according to the instructions for use. Do not open the thermos cap too often, as this can loosen the seal and increase the risk of leakage.

4. Don't overfill

Avoid overfilling the thermos, as the pressure from too much liquid can cause leaks.

5. Avoid excessive heating

Do not heat the thermos to too high a temperature, as this can damage the thermos material and cause leakage.

6. Store properly

Store the thermos in an upright position and do not drop it, so as not to damage its internal structure which could cause leaks.

7. Use additional cover

If possible, use an additional lid or protector for the thermos to make it safer from possible falls or pressure that could cause leaks.

FAQ How to care for and repair a thermos to keep it hot longer


1. What is the main cause of a thermos losing its ability to retain heat for a long time?

The main cause could be that the insulation in the thermos has weakened, there is an air leak, or the lining material in the thermos is starting to deteriorate.

2. Can all types of thermoses be repaired by lining the tube with cloth?

Not all. Thermoses with double vacuum technology or special materials may not be repairable this way because their internal structure is different.

3. How do you know whether a thermos is still suitable for use or needs to be replaced?

If the thermos is only able to maintain the temperature of hot water for a very short time (less than 1-2 hours) even after repair, it is likely that the insulation is too damaged and needs to be replaced.

4. Are there any other materials besides used rags that can be used to increase the heat resistance of a thermos?

Yes, besides used rags, materials such as aluminum foil, insulating foam, or other reflective materials can also help increase the efficiency of the thermos in storing heat.

5. Is this trick safe for all types of thermoses, especially those used for children's food or drinks?

It is best to make sure the materials used are safe and do not contain harmful substances. If the thermos is used for children, make sure there are no materials that can contaminate the drink inside.

(brl/tin)

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