Choosing a heating element for a boiler on the Aliexpress website from a Chinese manufacturer
A boiler is an irreplaceable thing in a comfortable life. He is needed not only in the apartment, but also in the country. On the eve of spring, the gardener will have many worries, and hot water will come in handy for him. Yet the most common reason for the breakdown of these devices is a faulty heating element. Of course, the equipment can be sent to "quarantine", that is, to be repaired. But for smart men there is another way out - self-replacement of a broken part. It is the heating elements for Chinese-made water heaters that are in great demand among Aliexpress customers. However, there are some remarks about these products.
Technical overview
Some models of these parts are equipped with a silicone gasket, which ensures a reliable connection of the parts. Two outer tubes (U-shaped) and one inner tube are made of stainless steel, which is very important for equipment in contact with water. Copper can also be used as a shell material. The mains voltage range in which these parts operate is from 220 to 380 volts. The power of Chinese heating elements can have the following indicators:
- 2 and 3 kW (with a tube length of 22/25 cm);
- 4.5 or 6 kW (with a working element of 26 or 28 cm);
- 9, as well as 12 kW (heating element size - 32/37 cm).
Such an amplitude of the power potential allows the technique to heat the liquid up to 100 ° C and more. However, the boiler will not work correctly if the volume of the tank is not taken into account when choosing the tubular element. For models that hold 80 liters, you need to buy less powerful parts, and for 150-liter containers - with the highest possible performance. Due to the fact that these heating elements are of an open type, they heat up the water several times faster than closed models. Nevertheless, such components are not so safe, and their service life is shorter.
Buyers' opinion
Customer reviews open the curtain on the world of product quality. Those who have already purchased these Chinese heating elements share their impressions. Many are satisfied with the assembly and operation of these elements. However, there is a group of users who are not very happy with the product. They state the following:
- the nut body is cracked;
- the metal coating is poor (the milling process left its marks on the surface that were not polished);
- the insulator arrived damaged;
- a strong smell of rubber may be emitted from the base of the plate;
- not suitable for 380 volts.
Such cases of defective goods are rare. Moreover, most sellers always try to take into account the wishes of their customers. But it is still safer, when ordering a package, to ask to test the products.
On Aliexpress, these spare parts for household appliances cost from 1,466 to 2,346 rubles, depending on the capacity. 
The price in specialized stores in Moscow for them is from 1,700 to 2,500 rubles.