The selection of water softener is mainly based on the water quality (water alkali, hardness) and water consumption in your home. Generally consider the population, housing area, water hardness, and water consumption. If the water quality is high and the water consumption is large, choose a large model of water softener.

Conversely, if the water quality in the home is good and the water consumption is not large, you can choose a small water softener, and even put it in the cabinet without occupying the area. The structure of domestic water purifiers includes rough filtration, activated carbon adsorption, ion exchange resin, hollow fiber and reverse osmosis membrane. When choosing an ideal and practical water purifier, you should consider the following aspects:

① Shop for brand-name products. Users must recognize the importance of product quality when purchasing water purifiers. Manufacturers of water purifiers must obtain a sanitary license from a higher-level sanitary supervision department, which has been identified by the technical supervision department and meets the State's "Drinking Water Quality Standards." Different water purifiers have different water purification effects. Generally speaking, the primary filter water purifier has a simple structure, mainly activated carbon, and its filtering capacity is limited. It can only be used for coarse filtration. The filtered water is best heated to boil and drink. Most of the first-stage filtration water purifiers belong to low-grade water purification products, and the price of each unit is between ten yuan and 150 yuan.

Multi-stage filter water purifier. This water purifier has two or three stages of coarse filtration and a group of fine filtration. Most of the fine filtration uses hollow fiber filter elements, and the filtered water can be directly drunk. Multi-stage filter water purifiers are mid-range water purification products. Each unit is priced between 1,000 yuan and 2,000 yuan. It can be accepted by the working class, and it is currently used more by families. Water hardness varies in different regions. The high hardness water quality in northern China and the limestone areas in the south of China have high calcium and magnesium ions in the water and are easy to scale. You should choose an advanced filter water purifier with an ion exchange resin filter.