1. heating speed: instant >; 3D rapid heating > layered heating > variable frequency heating > single tube heating
At present, the biggest headache for users of electric water heaters is also the primary consideration when purchasing. According to the heating speed, electric water heaters are divided into five categories from slow to fast: single tube type, frequency conversion type, layered heating type, 3D quick heating type and instant heating type.
1 class: single-tube electric water heater, with heating rod in the inner container, and slow heating speed of single tube;
Type 2: variable frequency heating electric water heater, which can achieve rapid heating effect through the choice of heating power, but the rapid heating effect is limited;
The third category: layered heating electric water heater, which can realize rapid heating by customizing water quantity, such as half-tank, full-tank and capacity-increasing heating principle. Users can choose different heating methods according to different bathing needs;
The fourth category: 3D quick-heating electric water heater, which adopts the patented 3D energy-gathering heating system, can instantly reheat the outlet water to 10℃ under certain conditions, allowing users to get a bathing experience that can be washed immediately after starting in summer and save 70% heating time in other seasons;
The fifth category: the thermal electric water heater, which adopts the enhanced 3D energy gathering ring, the temperature of low-temperature water flowing through the outlet pipe instantly rises to above 15℃, and it can be washed immediately after being started in summer, which is 10 times faster than ordinary water heaters.
Second, appearance: the volume should be light and the water output should be large.
Appearance volume is the second purchase factor. Generally speaking, under the same volume, the faster the heating speed, the greater the hot water output. But at present, there are some water heaters with small volume and large water quantity to choose from, which will not affect the family's demand for hot water and solve the problem that the bathroom space is too small to install. Very suitable for users with limited installation space.
Third, health: water quality safety needs to be equipped with clean water washing technology.
Tap water often carries harmful substances such as sediment, rust, bacteria and foreign bodies. Long-term use will affect skin health. More and more consumers are beginning to pay attention to water quality health, which has become a new consumption trend.
Most brands in the industry use liner cleaning to inhibit bacteria at high temperature. The basic principle of tank cleaning is to manually clean the tank through the sewage outlet, and the high-temperature bacteriostasis is to kill bacteria through the high temperature of 80℃.
At present, there are three purification methods in the industry: the first purification filter can remove fixed particles such as rust and sediment, the second purification adopts nano-metal household pure water composite filter imported from the United States to remove residual chlorine, and the third purification adopts high temperature sterilization at 80℃ to kill 99% bacteria, and the water quality after descaling and antibacterial purification is healthier. For example, MKA products and JT5 products of Haier electric water heater can achieve the functions of scale inhibition, bacteriostasis and impurity removal, so as to realize clean water washing and make the skin healthier, and become the first choice for mothers and babies and women who love beauty.
Fourth, safety: the electricity-proof wall is the most reliable
For safety reasons, electric water heaters must choose products with anti-electricity walls. At present, 70% of domestic electric water heaters are equipped with anti-electricity wall 1.0 technology, which has been written into international standards as a Haier patent, and is a safety revolution in the electric water heater industry. In order to change the hidden danger of electricity consumption, China officially implemented the new national standard of electric water heaters in July 2007, and "Haier patented anti-electricity wall technology" became the mandatory safety standard of national electric water heaters. At present, the technology of anti-electricity wall has been upgraded to 3.0, which has become the safest protection system for household electricity consumption.
Passive protection of electricity-proof wall 1.0: solve the problem of electrification of water heater itself;
Anti-electricity wall 2.0 active monitoring: protect the electricity consumption of the whole house, and once there is leakage in the house, the anti-electricity wall will give out a light alarm;
Anti-electricity wall 3.0 makes household electricity zero hidden danger: anti-leakage, safety early warning and fire prevention. Adopting the international advanced space temperature sensing technology, when the wire temperature is too high, it will automatically cut off the power supply and stop heating.
Verb (abbreviation of verb) quality: The lower the energy efficiency parameter, the longer the warranty period, the better.
Safety performance, energy efficiency parameters and warranty time can all reflect the quality of electric water heaters.
The energy efficiency parameters are divided into five grades, and the lower the grade, the more energy saving. For example, the energy saving effect of 1 level energy efficiency is better than that of level 2.
The warranty period of different brands of water heaters is 1-8 years, but the longer the warranty period, the better. For example, MKA products and JT5 products of Haier electric water heater are guaranteed for 8 years. During the warranty period, free on-site maintenance and free replacement of parts such as the inner container can not only save the later maintenance costs, but also avoid worries.
What's the difference between warranty and warranty? Maybe many consumers don't pay attention to it, and the difference between words is a world of difference! Warranty: During the warranty period, the manufacturer provides free maintenance; Warranty: During the warranty period, paid maintenance service will be provided.
6. Intelligence: A good water heater is based on intelligence.
The intelligent function of electric water heater can bring more convenience to consumers' lives. At present, the intelligent functions of electric water heaters mainly include: APP one-button control, speaker voice control, intelligent constant temperature, hot water reservation and so on. For example, Haier MKA is an electric water heater.
The above six factors basically cover all the needs of buying electric water heaters at present, which can ensure consumers to choose a comfortable and safe electric water heater.