1, water heater: the most traditional way is to install a water heater. If the kitchen and bathroom are next to each other, you can install a gas water heater in the kitchen (restroom is too humid, do not recommend installing), at the same time to the kitchen and bathroom hot water. Nowadays, the average family will have two bathrooms, one of which is in the master bedroom, so it becomes 3 places need to supply hot water, only install a small water heater is obviously not enough. You can install a large air water heater, such as the one in my house is installed in the balcony, responsible for making hot water supply to the whole house. But this will cause a problem: the distance between the hot water and the terminal is quite far, and every time you turn on the faucet it will take a long time before you can have hot water, while the kitchen uses water frequently, which will waste a lot of water.

2, KitchenAid: KitchenAid is a small water heater, installed inside the sink cabinet. It works simply by heating water through electricity and storing it in the liner, so that when you turn on the faucet, you can get hot water instantly. But the KitchenAid has a fatal drawback: it's relatively small itself, and that means that the amount of water stored for heating is insufficient. When the weather is extremely cold, or when you have guests at home and need to wash a lot of dishes, the KitchenAid won't have enough water. If you have a small family, you don't have many pots and pans to wash at home, so a KitchenAid will be able to fully meet your needs.

3, hot water faucet: this is a relatively new appliance, the working principle is similar to the KitchenAid, are through the electrical energy to heat the water, that is, open that is, the temperature can be adjusted. That is, the benefits of hot water faucet is compact, and do not have to store water, there is a constant supply of hot water. However, the disadvantage is also very obvious, that is, the power is relatively high, about 1000w, after all, it can do hot water uninterrupted, it is understandable. In addition, small O has a concern, since the heating power is so high, the internal oxidation is very easy, I am afraid that the service life is not very long oh.