As one of the indispensable household appliances in our life, water heater undertakes the responsibility of using all hot water in the home. However, there are many misunderstandings when purchasing. At the same time, what kind of water heater is suitable for you? Maybe, we will know after watching together.
When the water heater is used in a humid environment, the user's life may be in danger because of the small current leakage.
Consumer awareness misunderstanding 1: qualified water heater = safe bath
With the increasing popularity and maturity of electric water heater in Chinese market, the whole electric water heater industry claims that the problem of electricity safety has been comprehensively solved. And consumers also more agree with this view, that the electric water heater products are qualified, bath of course to eliminate the worries behind. However, the recent electric shock accidents caused by some qualified water heaters make people wonder: is the qualified water heater really safe? What causes these accidents?
The standard of electric water heater in China is equivalent to the European IEC standard. This standard requires that the grounding wire in the user's home must be good. However, due to historical reasons in our country, the grounding system of many buildings is not good or even lacking, such as wrong wiring in decoration, aging lines, pulling wires privately, using inferior switches and sockets, and using water pipes as grounding wires. All of these may lead to live ground wires and lead to electric shock accidents. Consumers don't know about this. In this environment, even if the water heater passed the IEC inspection, it can not guarantee safe bathing.
Consumer awareness misunderstanding 2: the use of leakage protector can completely protect bath safety
To explain this misunderstanding, we must first understand the working principle of the leakage protector: the fire line and zero line in the power line enter the water heater through the leakage protector. In the working state of the water heater, once a certain internal electrical device leaks, the leakage protector can cut off the power supply within 0.1 second, so as to prevent the current from continuing to enter the water heater.
However, the power line of the water heater also contains a ground wire that does not pass through the leakage protector. Theoretically, the ground wire is also set to ensure the safety of electricity use. However, in case of unreliable grounding, the ground wire of fire line is reversed during decoration, and the line is aging. Because the ground wire does not pass through the leakage protector, the current may drive into the water heater through the ground wire, causing electric shock It's still inevitable.
Consumer awareness misunderstanding 3: Unplug the power plug, bath can be safe
Due to the frequent occurrence of electric shock accidents of electric water heaters, consumers naturally worry about the use of electric water heaters. Therefore, some smart consumers pull out the plug for bathing after the water heater is heated, and some manufacturers with insufficient confidence in the safety of their products also encourage consumers to do so in the sales process.
However, in addition to the water heater circuit, it is also inevitable to connect with the water pipe. In some buildings with poor grounding or no grounding at all, some people will connect the grounding wire with the water pipe, and let the water pipe act as the grounding of the building. In this case, if the electricity leakage occurs in a household, the water pipes of the whole building will be electrified, and the users who are using the water heater for bathing will be injured by the current introduced by the water pipe even though they unplug the water heater.
Consumer awareness misunderstanding 4: the use of gas water heaters, solar water heaters there is no hidden danger
If that had been true a few years ago. But now, the gas water heater is forced to adopt forced discharge technology by the state; solar water heater generally uses electric auxiliary heating, and the hidden danger of electric leakage also exists, even more prominent.
The gas water heater adopts forced discharge technology, and a motor with a voltage of 200V needs to be added inside the machine. Due to the small volume of the gas water heater and the close setting of the internal parts, once the motor leaks, the probability of current entering the water pipe is greater than that of the electric water heater, and the electric shock accidents will be more.
The solar water heater uses electric auxiliary heating, and its heating principle is the same as that of the electric water heater. However, the electric safety of the manufacturers specializing in the production of solar water heaters is usually not as professional and comprehensive as those specialized in producing electric water heaters. Therefore, the electric shock accidents of solar water heaters are more serious than those of electric water heaters.
What kind of water heater is the mainstream market?
If you want to follow the trend, first look at what type of water heaters are patronized by others.
According to statistics, in the whole water heater market, water storage electric water heater accounts for 53%, gas water heater market share is about 30%, solar water heater only has 10% share, air source heat pump water heater share is less than 4%, that is, thermal water heater share is less than 3%.
In the nationwide sales list of water heaters, the entry-level products with about 1000 yuan are still the mainstream of the market. Among the top 10, there are 5 types of water storage electric water heaters, 2 gas water heaters, and 3 thermal electric water heaters. It should be noted that the models less than 700 yuan in the top 10 are instant electric water heaters, which are all "small kitchen treasures".
From this point of view, water storage type electric water heater and gas water heater are still the mainstream of the market, and people are more willing to buy low-cost products.
What kind of water heater is suitable for me?
In fact, the main basis for selection is to consider their own economic conditions, energy-saving awareness, housing conditions and the number of family members.
From the perspective of economic conditions: house prices are rising, and those who can afford to buy a house can consider long-term investment. The purchase of heat pump water heater and solar water heater is worth comparing. Of course, if the economic conditions are not strong, such as the pressure of loan, and you want to spend less, it is easier to buy water storage electric water heater and gas water heater.
From the perspective of energy-saving awareness: with the rapid economic growth and rising energy prices, many white-collar workers consciously respond to the call of building a resource-saving society and purchase energy-saving products, they can choose to buy heat pump water heaters and solar water heaters.
From the perspective of housing conditions: when considering the purchase of heat pump water heater and solar water heater, solar water heater is generally considered in the north, and heat pump water heater is generally considered in the South; if you live in a low-rise building in the suburb or a high-rise building in the city near the top of the building, solar water heater can be installed; however, it is recommended to install heat pump water heater in high-rise buildings in cities. When considering the purchase of water storage type electric water heater and gas water heater, if the bathroom and kitchen are only separated by one wall and the ventilation conditions are good, then the gas water heater is more suitable; if the bathroom and kitchen are more than 5 meters apart, the water storage type electric water heater is more suitable.
From the perspective of family members, the capacity of the water heater should be considered according to the bathing habits (frequency, time and number of people in each bath). Generally, 60 liters of water is suitable for male members. If some white-collar members want to use bathtubs, only the heat pump water heater can meet the needs.
Instant electricity is generally considered to provide hot water for the kitchen in winter, rather than for bathing.
