At present, the water heaters we encounter on the market can be divided into four major types: electric heating, gas, air energy and solar energy according to the heating method.
class, which one is more suitable for our ordinary people's homes, and is safe, energy-saving and easy to use?
1. Comparison of different water heater types:
From the comparison of various types of water heaters in the table above, we can see that:
1. Gas water heater: it is heated immediately, no need to wait for preheating, no need to use a water storage container, and the water temperature is constant, the disadvantage is that there is oxygen consumption and exhaust gas emission, and the requirements for the installation site are strict.
2. Electric water heater: Different from gas water heater, it needs to be preheated for heat storage, it has no oxygen consumption and no emission, is safe and hygienic and has a long service life, but it needs to be preheated when using hot water, and it requires a certain capacity of water storage and irrigation.
3. Air energy water heater: It can supply hot water with a small amount of electricity, which is not greatly affected by sunlight and has the lowest energy-saving cost, but the air energy water heater is large in size and must have a suitable installation site.
4. Solar water heater: heating is affected by sunshine, the sun is abundant in summer, there is more hot water and less sunshine in winter, and the hot water is insufficient, and the contradiction between hot water and water is prominent, and it is difficult to reconcile.
IIRecommendations for the selection of different water heater types:
The first choice of gas water heaters that have been connected to the gas pipeline
The selection of gas water heater can be selected from the type of discharge, water output, constant temperature mode, heat exchanger and fan location.
There are four main types of emissions: flue type, inline type, strong exhaust type and balanced type, and the flue type is the most popular choice at present, which draws oxygen from the room and discharges the exhaust gas out of the outside through the flue.
From the point of view of water output: the most reliable choice is to look at the gas meter, what is the maximum combustion water output supported by the gas meter, and then make a decision according to the situation. If it is g1 on the gas meter6. Just choose 13 liters directly, if it is g25 choose 16 liters.
There are three types of thermostatic methods: proportional valves, water-gas dual blending, and water volume servos. The proportional valve is low-end, but the water temperature is controlled by air regulation, and the water temperature fluctuates greatly, and the body feeling is very obvious. The water and gas dual adjustment is the mid-range, and the water volume server is the best high-end.
The exchanger material is divided into stainless steel, oxygen-free copper and phosphorus deoxidized copper, stainless steel material due to low heat transfer efficiency, easy oxidation life is not long, it is not recommended to choose, the other two differences are not obvious, and phosphorus deoxidized copper ** is much more expensive, it is recommended to choose oxygen-free copper.
There are two ways to install the fan, the lower blower has a longer service life in the low temperature area, while the upper blower is just the opposite.
If you don't have a gas pipe, choose an electric water heater
Compared with gas water heaters, the structure of electric water heater is much simpler, it is to install a metal heating pipe in the cavity of the storage container, and transfer heat to the water injected into the cavity after the electricity is turned on to obtain hot water.
Air energy is preferred over solar energy
Air energy water heaters, also known as "air source heat pump water heaters", are based on the principle of absorbing heat from the air through the air, compressing it into heat energy through the heat pump system, and transferring it to the water tank for heating. Therefore, the biggest factor affecting air energy efficiency is the surrounding ambient temperature, which determines that air energy is more suitable for use in the south or north, and the use experience is not friendly in places where the temperature is too low in winter.
Air energy and the principle of air conditioning is the same, is the expansion of the air conditioning heating function, energy saving is the biggest advantage, energy efficiency consumption is only half of the electric water heater, heating process electricity and water separation, no discharge, safety and environmental protection, can automatically and accurately control the water temperature, comfortable with water, and long service life, is nearly twice as long as the gas water heater.
The biggest disadvantage is that it occupies a large space, is expensive and noisy, and is not suitable for low temperature environment, and the use area is seriously limited. But the south is the most suitable place to use air energy, and it is also the most cost-effective and suitable water heater.
When purchasing an air energy water heater, you can choose from the brand, capacity, efficiency ratio and refrigerant. The quality of the big brand is clear, the after-sales maintenance is guaranteed, the capacity is 150L, 200L, 300L three specifications, should be selected according to the heating mode and family population, calculated according to 50-60 liters per person, the heating mode of heat pump plus electric auxiliary heat is better than that of pure heat pump, and the amount of hot water is increased. The higher the efficiency ratio (COP), the better, and the best refrigerants used in refrigerants are currently R134A and CO2. There are other self-cleaning, inverter, clean water washing and sterilization, etc., which are determined according to the needs of the family.
IIIWater heater best-selling brand recommendation:
Gas water heater: Haier JSQ30-16Model3D
ThisHaier JSQ30-16Model3DIt is a better selling one in the thousand-yuan price range, mainly thanks to:
First of all, in terms of temperature control, the stepless frequency conversion water servo is adopted, coupled with MPC+ADRC dual intelligent algorithm control, which can cope with more complex water use scenarios such as water pressure fluctuations and multi-point water use, and has stronger temperature control capabilities.
Secondly, in terms of mute configuration, a 360° stereo noise reduction system has been added, which has stronger silent noise reduction ability and quieter operation.
Moreover, this one also supports ECO energy-saving mode, voice + APP remote operation, 56 layers of security, intelligent memory and other practical functions.
In general, the competitiveness of this in the price range of 1,000 yuan is very strong, and friends with a budget of more than 1,000 can focus on it.
Electric water heater: Midea F6032-JF4 (HEY).
Using Midea's self-developed high-purity electronic magnesium rod, compared with ordinary heating rods, the advantages of this electronic magnesium rod are that the corrosion resistance will be higher, the titanium core will be zero consumption, and the water quality will be drier
The appearance design of Midea F6032-JF4 (HEY) water heater ivory white is very minimalist, the lines are very rounded, and this color is very versatile.
With self-cleaning function, upgrade automatic water purification line, can resist bacteria.
With a sticker power-off function, the shower will automatically power off as soon as it is turned on, and there is no need to unplug it.
Equipped with anti-power wall + leakage power-off alarm + safety integrated monitoring, very safe;
Personal opinion: Midea F6032-JF4 (HEY) water heater and Haier EC6001-PD3 (U1) electric water heater, the appearance color of the two water heaters is different, and the heating method is double-pipe heating. All of them are first-class energy efficiency levels, and they all have their own characteristics. The inner liner material of the two water heaters is different, one is enamel and the other is King Kong. The exterior design is also different, but the waterproof level and hot water output rate are the same. The price of the two water heaters is about the same, and you can choose according to your actual situation.
Air energy water heater: Haier FJE7L4
Haier Air Energy has participated in and led the formulation of 7 national and industry standards, won the "Leading Brand in China's Heat Pump Industry" for 5 consecutive years, was selected into the "Energy Efficiency Star" list of the Ministry of Industry and Information Technology of the People's Republic of China for three consecutive years, and has successively won the "China Heat Pump Industry Heat Contribution Award", "Science and Technology Innovation Award", German iF Design Award, China High-end Home Appliance Red Top Award, Aplan Environmental Protection Award and other heavyweight awards at home and abroad.
This product adopts full waterway antibacterial, pasteurization at high temperature, cruising scale inhibition, and is safer and more secure to use.
This Haier Air Energy uses a compressor jointly developed with Hitachi. The quality is more guaranteed;The patented King Kong three-layer tank is used on the inner tank, which greatly prolongs the service life of the water heaterIn order to improve the thermal efficiency, the "patented convection heat exchange technology" is used, and the heat exchange tube with multi-flow path design is closely surrounded and fitted seamlessly with the water tank, which effectively increases the heat exchange area, the temperature transfer is more rapid, and the heating uniformity is betterThis is a model that uses CO2 as a refrigerant in refrigerant technologyThe self-cleaning mode of the external unit is adopted, and the external unit can carry out self-intelligent detection and automatically turn on the defrosting system, which can maintain the stability of heating in the low temperature winter. It is one of the best-selling models for value and start.