Recommended models: TR3000, TR5000
 
Siemens is a well-known brand, and it is also a German home appliance brand, and Bosch electric water heaters may not be well-known. But in fact, the two have a deep relationship, and they both belong to BSH Home Appliances, which was jointly established by Bosch and Siemens. BSH is the number one manufacturer of major appliances in Europe and the third largest in the world. In 2014, Bosch acquired all of Siemens' shares in BSH, and BSH has since become a wholly owned subsidiary of the Bosch Group. At present, the electric water heater with the brand name Siemens has been withdrawn from the market, and Bosch has completely inherited the mantle of Siemens electric water heater and unified the original technology and channels.
 
Bosch electric water heaters do not have many products, including the basic BM1 and ME1 series, as well as the TR3000 and TR5000 series with multi-power rapid heating function. The BM1 is mechanically controlled, the TR3000 is controlled by the electronic touch screen, and the ME1 and TR50000 are controlled by remote control. The product line is simple and easy to buy.
 
Among them, the basic series still uses a submersible single heating tube, which is a classic representative of full-tank heating. The disadvantage is that the heating rate is slower and the hot water output rate is not high. The hot water output rate of a water heater refers to the ratio of the actual hot water output to the rated capacity. The BM1 and ME1 series have a hot water output rate of only 75%. For an electric water heater with a capacity of 60L, the actual hot water output is only 45L if the output rate is 75%, which is mediocre compared to brands such as A.O. Smith with a hot water output rate of 80%-90%.
 
The Bosch TR series is a product with multi-power rapid heating technology, which supports semi-tank rapid heating, and the hot water output rate has also been greatly improved, reaching the highest value in the market of 94.8%, which is in sharp contrast to the basic product. Among them, TR3000 has 6 times the capacity of water storage, and can provide continuous output of at least 500L of hot water. And as a Class 1 energy consumption product, the inherent energy consumption coefficient for 24 hours is only 0.6, and the smaller the parameter, the better the thermal insulation performance. 0.6 is the lowest value of all electric water heaters on the market, and the insulation loss is less than 1 kilowatt-hour for a whole day. The price of this model is 1800-2700 yuan, with 40, 50, 60, 80L four capacity options.
 
The TR5000 is an upgraded version of the TR3000, inheriting all the advantages with the addition of wireless remote control. For the water heater installation position is slightly higher or there are elderly and children at home, wireless remote control will be more convenient and avoid unnecessary accidents. And the LED touch screen on the water heater is also beautiful and easy to use, making it easy to operate with wet hands. The level 3 power-off protection device and the design of the anti-electric wall can also fully protect the safety of the family. The series is priced at 2000-2700 yuan.
 
Dr. electric water heater has obvious polarization, and it is more recommended to use high-end products, and the safety protection of the basic model is also designed in place, and the operation is simple, but the energy efficiency performance is average compared with domestic brands. After-sales service has always been a major flaw for foreign brands, and Bosch's warranty period is limited to three years.