1. Kettle is a very common and indispensable small household appliance in our daily life. The kettle is to sterilize the hard water in the faucet by high temperature heating, and then turn the hard water that can't be drunk into soft water suitable for us to drink. As we all know, water is the source of life and an indispensable and very healthy drink for people. This shows the importance of the kettle.
2. Line aging, security issues. Kettle is also a small household appliance, which is used very frequently. Since it belongs to household appliances, there is bound to be the possibility of line aging, and the service life of the line will be continuously reduced if it is used for too long. Wire aging is a major safety hazard of household appliances. In order to eliminate this potential safety hazard and ensure safety, I personally suggest that the kettle should be replaced regularly.
3. Scale problem. After long-term use, there will be a very obvious scale layer at the bottom of the kettle. The main components of scale are some insoluble substances such as calcium carbonate and magnesium hydroxide. If it is mixed with water during heating, it will also affect the taste of water. On the other hand, the scale adheres to the bottom of the pot, which will form a thick scale layer. The thermal conductivity of scale layer is very poor, so water is not easy to boil when boiling, which wastes a little electricity. There are many ways to remove dirt, such as using white vinegar and baking soda. I think it is more effective to use white vinegar to remove dirt. The specific method is to add some water to the kettle, and then add a small amount of white vinegar to the water. After burning for a period of time, the scale will be greatly reduced or even removed. But after a long time, if the scale layer is too thick to be removed, the kettle needs to be replaced.
4. There is no fixed time to change the kettle regularly, which needs the user to decide according to the purpose of the kettle. Generally speaking, the kettle is used normally at home and can be replaced once in June-August.
Based on the above points, I personally think that the kettle needs to be replaced regularly.