The water heater is an essential household appliance for every family and is the main carrier of household water. In the 19th century, first-class water heaters were introduced in Germany. After several hundred years of development, water heaters have already entered millions of households. Water heaters on the market may look different in shape, but in fact they are not very diverse. So what types of water heaters are there? What are their advantages and disadvantages? Today we will introduce the types of water heaters and their advantages and disadvantages. We hope to help your life.

Electric heating

Mainstream products can be installed in bathrooms, but they must be hung on load-bearing walls. The biggest problem with electric heating is that electricity is expensive, especially since many cities now implement gradient electricity prices. Current electric water heaters have been completely separated by water and electricity, and there is no need to worry about electric shocks.

Although the tank will be filled with cold water during the bath, most brands are currently able to do without major fluctuations in water temperature. Some high-end models of electric water heaters have added the function of “speed heating”. In the summer, the water temperature can be increased or not limited by the amount of water stored in the tap water, which can be considered as a solution to the shortcomings of some water storage water heaters. If we can not guarantee the constant temperature now, basically do not have to come out and do a water heater.

Solar energy

Solar water heaters can only be installed on the roof of the building, so only the top floor is recommended. Because the water pipes are too long, other floors waste water and waste heat. The energy-saving effect of solar energy is very obvious. In areas with sufficient sunlight, electricity consumption can be reduced. In summer, the water temperature can even reach 99°C. Only heating and poor weather require electricity-assisted heating.

However, in the southern part of the country where there is not enough sunshine during the winter, solar energy has no place to use it. The season when it is most needed for hot water does not have the sun.

Air energy

The working principle of air energy water heaters is similar to that of air conditioners. There is also an outdoor unit that absorbs the heat from the air to heat the water in the water tanks. It also provides the kitchen with extra air-conditioning, which saves electricity and consumes 1/3 of the electricity. ~1/4. However, the capacity of air-heated water heaters is mostly 150L+. They are very large and can only be placed on balconies. Their own prices are also expensive, and domestic 150L is also 5,000 yuan. Only when the water consumption is huge can it reflect its energy-saving advantages. However, because it absorbs heat from the air and heats water, it can only be supplemented by heat when the temperature is too low.

So big a water tank, which are particularly troublesome throwing children, the roof is a good choice for hot water heaters two main force.

Gas water heater

The gas water heater occupies a small area and is ready for use, and now the gas water heater has solved the problem that the water temperature is too hot for a short time after the fire. The condensing gas water heater recovers the heat of the exhaust gas to preheat the cold water, and the heating and energy saving effect is better. Most districts have access to pipeline gas. As long as water and gas are used, hot water will not break. The relatively high thermal efficiency of gas, coupled with gas itself is not expensive, so it is much cheaper to use than electric water heaters.

The current mainstream of gas-fired water heaters is exhaust emission, and it also adds a lot of protective measures, but it must not be installed in the bathroom, it must be installed in a well-ventilated living balcony, and may be far from the bathroom. The kitchen still closes the doors and windows during the winter season, which is not a good choice from the perspective of safety or combustion efficiency, unless ventilation is maintained when using a water heater. Balanced water heaters do not have this problem because there will be additional air intakes.

water heater

All water heaters have the smallest size and the lowest price, but the high power of 6-8 kW must use dedicated lines. Some 6-7 kW products can barely cope with the winter showers in the South, but the temperature and water pressure are low, and more than 8 kW in the north is enough. There are some 9 ~ 12kW super-power electric water heaters, but also need to match the 60A household meter, 50A household meter needs to apply for power company transformation.

Although the safety is guaranteed, the power consumption is not higher than the water storage type (high power but short use time), but the high cost of hydropower reform is also the reason why it has not been popularized. Today's instant-type electric water heaters are still used in the kitchen, that is, instant hot kitchen Po, there is a hot water for the use of a tap, the water temperature and pressure requirements are not as high as the shower.

The wires can be concealed and the ugly can be hidden all together in the locker.

Here are some common and dangerous ways of exhausting gas water heaters:

1. Natural flue-gas flue-type water heater flue is only placed on the water heater, and then horizontally extends out, the outdoor part may even droop, and in case of strong wind, it will cause smoke backflow.

2. Use the common ventilation ducts of the house to smoke. The smoke will enter the neighbor's house and cause harm.

3, flue and bathroom exhaust pipe sharing the outlet pipe, when the smoke can easily enter the bathroom poisoning.

4. The flue gas duct shares the gas outlet pipe with the exhaust hood.

5. There is a leak point on the flue. This type of accident has caused many casualties.

6, flue through the bedroom, bathroom, flue gas leakage once a great harm.

After understanding the heating principle and advantages and disadvantages of various water heaters, it is possible to make an objective horizontal comparison among various categories, and to carry out targeted purchases based on the actual needs and installation conditions of their own families. After the renovation of the water heater, it looks very simple. If you like it, you can buy it if you can afford it.