Which brand of water heater is good?

Which brand of water heater is good? Share with you some key points of purchasing electric water heaters.

1, the capacity should be selected correctly.

At present, the mainstream capacities of household electric water heaters are 40L, 50L, 60L and 80L.

40-liter and 50-liter electric water heaters can meet the needs of 2-3 consecutive baths.

60 -80 liters of electric water heater can meet the needs of 3-5 people for continuous bathing.

The water consumption for a single bath is about 20L, and the above capacity selection is for reference only!

2. Selection of gasket

The inner container is one of the important parts of the water heater, which determines the service life of the water heater.

Water heater liners are divided into stainless steel liners, enamel liners and galvanized liners.

Galvanized lining has been cancelled.

Stainless steel liner has the best performance and its service life can reach 15 years. However, it is difficult to weld, and the safety hidden danger of weld is great, so it is rare in the market.

At present, the mainstream is enamel liners, such as AO Smith's Jingui liner, ariston titanium liner, Midea's blue diamond liner, Haier's diamond liner and Wanhe's blue glaze liner, all of which belong to enamel liners.

The composition of enamel liner is steel plate+adhesive layer+coating. The biggest difference between different brands is the coating, which determines the corrosion resistance, scale resistance and rust resistance. It is recommended to choose a patented liner with coating.

3, the choice of heating mode

Heating methods are divided into single-tube heating and double-tube heating.

Single tube heating is mostly used for low-end products, which can only be heated conventionally, with relatively slow heating efficiency and relatively low power.

Double-tube heating is used for high-end products, with fast heating efficiency and relatively high power.

Similarly, there are differences in double-tube heating: refer to Figure 2 and Figure 3. Although fig. 2 is a double tube, only three kinds of power adjustment can be realized; However, the double-tube layout in Figure 3 is more reasonable. This model will have the function of half-box heating/full-box heating, with higher heating efficiency, better practicability and more flexibility for users.

4. Safety performance

Electric water heaters generally have grounding protection, anti-dry-burning, anti-overheating and anti-overpressure devices. The difference between different brands lies in the leakage protection function.

At present, the mainstream leakage protection is anti-electricity wall technology and three-stage power failure.

The electricity-proof wall adopts the way of water resistance attenuation and isolation, and a resistor (insulating material) is installed in the front of the water outlet to form the electricity-proof wall, which attenuates the voltage in the water when it leaks electricity, thus protecting the human body.

Three-level power failure means that once leakage occurs, the system will instantly disconnect all neutral wires, live wires and ground wires, which is as safe as unplugging the plug.

Two kinds of leakage protection recommend three-level power-off protection, which I personally think is more reliable; Some brands have electric wall double insurance and three-level power failure, which is the best way.

5. Humanized function

Various brands have diverse functions, among which reservation function, moderate temperature insulation and night electricity technology are worthy of attention. On the one hand, these functions can make use more convenient, on the other hand, they can save electricity.

Intelligent appointment: you can make an appointment for a time when you need hot water to take a bath, and enjoy the hot water directly after the time. This function is very suitable for working people.

Medium temperature insulation: The water heater can keep the water temperature within a range, so it is the most suitable water temperature for your washing at any time. Some brands have a medium temperature of 40℃, while others have a medium temperature of 45℃. This function is very suitable for users who have no electricity for 24 hours, which is very practical.

Night electricity function: Generally, the heating period of this function is 0:00-6:00, during which the electricity price is low. It can be kept warm after heating and can be used all day.

To share some high-quality brands (updated in August 18, 20 19).

65438+ Smith

A.O. Smith 1936 entered the field of water heaters. His products are famous for their reliability and excellent service. Many global chain brands have used Smith water heaters, such as McDonald's and KFC. The price of Smith electric water heater is between 1900 yuan -5000 yuan.

Product highlights:

1. Patent Jingui coating, which is the core patent of his family. The liner and heating rod of Smith water heater are all coated with precious gold, which has good anti-corrosion and anti-pollution effect and longer service life. And the brand promise liner can be replaced for free if there is a problem within 5 years.

2. Patented liner cleaning technology is available in all products. Users can clean the inner container by themselves, remove scale and dirt, and ensure the sanitary problem of bathing.