How to choose electric water heaters

Water heaters are one of the household appliances in our daily life. With more consumers prefer to choose electric hot water in recent years, the problem of accidents in water heaters is frequently reported. How to purchase them to ensure the quality of their products? There are many types of water heaters, we need to understand more clearly, let's take a look at these buying techniques.

How to choose electric water heater

First, the choice of electric water heater type

1, the choice of liner

The electric water heater liner is the key to the quality of the electric water heater. At present, the electric water heater liner can be roughly divided into three grades: the highest grade, the longest life is the stainless steel liner, the mid-range enamel liner and the low-grade galvanized liner. (1) Stainless steel liners are generally made of high quality imported stainless steel materials. Advanced tungsten argon arc welding can be used to eliminate weld oxidation and have a service life of more than 15 years. However, this kind of electric water heater is relatively expensive and suitable for families with more economical advantages. (2) The mid-range is the enamel liner. It is mainly used in some European countries. It is made by baking a layer of inorganic ceramic glaze on ordinary steel plates. It does not rust and costs only 1/6-1/4 of the cost of stainless steel liners. If the manufacturing process is poor, the thickness of the glaze slurry attached to different parts of the gallbladder may be uneven, and the porcelain phenomenon may occur. Once the porcelain water heater liner appears, it will corrode the perforation and affect the service life of the electric water heater. This electric water heater is affordable and suitable for general households. (3) The low-grade galvanized liner is coated with a curing resin. Since the inner tank is in a heating environment of 70-80 ° C, the solidified tree refers to an easy hydrolysis reaction, and the zinc protective layer has poor anti-rust ability and short service life. Due to low production costs, the price is also low.

2. Selection of safety devices

Safety devices are very important for electric water heaters. It will be related to the safety of our lives; electric water heaters generally have protection, anti-dry, anti-over-temperature, anti-overpressure devices, high-grade leakage protection and automatic disconnection without water and additional power-off indication. The water heater tank pressure rating is generally 0.75MPa (different models, different ratings). When the internal pressure of the overpressure protection device reaches the rated value, the safety valve should be automatically opened to relieve pressure. Be sure to be safe. The leakage protection device generally requires that the power supply be quickly cut off within 0.1 second when the leakage current reaches 15 mA. To purchase products with the Great Wall Safety Sign.

3, insulation effect selection

The power of electric water heaters is an aspect that consumers have to consider. The key to affecting the power consumption of water heaters is the insulation effect. The main factors affecting the insulation effect are the thickness of the insulation layer and the density of the insulation material. Consumers should try to choose a product with a large thickness of the moisture layer and a density of the insulation material, which can be compared according to the manufacturer's product specifications.

Second, the choice of electric water heater capacity

The capacity selection is mainly determined according to the normal water consumption of the family population: a rated capacity of 30-40 liters of electric water heater, suitable for 3-4 people for continuous bathing; 40-50 liters of water heater for 4-5 people for continuous bathing; 70- The 90-liter water heater is suitable for continuous bathing for 5-6 people.

Third, additional features

1. Constant temperature function: The advanced magnetization thermostat is added to the water outlet of the water heater to solve the problem of water temperature, cold and heat, and avoid burn accidents when using.

2, the disk function: the formation of a magnetic field inside the magnetizer, improve the activity of water, promote human health.

3, anti-corrosion and descaling function: Because the water heater usually works at 70-80 degrees water temperature, it is especially important that the electric water heater has the descaling function.

What are the buying skills?

1. Professionalism. Manufacturers who specialize in water heaters generally spend more research and development and production expenses and energy on specific products. Therefore, the electric water heaters produced in the industry also have high visibility and industry recognition.

2. Has a long history. A brand with a long history of tens of hundreds of years can stand the test of time and stand out because it has a deeper understanding of product technology research and development, continuous innovation and understanding of consumer needs. Products and technologies are also better able to meet the ever-changing individual needs of consumers.

3. The quality is reliable. The quality of the product is related to the service life, especially the inner tank, which belongs to the core of the electric water heater. A good electric water heater liner has good anti-corrosion and anti-fouling properties, and has a strong pressure resistance. A good quality product can be more durable and has a long service life.

4. Product safety. The safety of the product directly affects the life of the user. Therefore, a good electric water heater must be designed according to the national safety standard process, and the water supply line of the water heater can be monitored in real time. Once there is an abnormality, the power is cut off instantaneously to ensure the safety of life.

5, perfect after-sales. Whether it can generate a strong trust in a brand depends largely on the excellent after-sales service. This is also a better complaint point for consumers to find their own rights and interests, so perfect after-sales is an important criterion for your choice of products.

Through the above understanding, we know that the choice of the inner tank of electric hot water will affect the service life of the product, the choice of safety devices and the additional functions. When choosing, choose the right electric water heater according to the choice of the family's economic conditions and the population demand. Which type of electric water heater to buy, we must buy a good water heater with good reputation, so that you can use it with peace of mind.