How to choose a gas water heater for people who have no experience in water heater purchase?

Everyone will subjectively think that a certain brand is good, in fact, as long as it is the top few brands in the market, at least in terms of safety, there will be no major problems, the difference is mainly reflected in the functionality and quality, do not avoid unknown miscellaneous brands.

The author will also subjectively think that Tver, Rinnai, and Noh rate are better imported brands, but in fact, in recent years, several major domestic brands have also had a lot of development, Tver, Rinnai, the main advantage of these brands lies in the high quality brought by decades of technical accumulation, because the author himself is engaged in household appliances related industries, the sensitivity to electrical appliances is high, and the average maintenance of domestic products is once every 3 years, and the imported brands are mostly 5 to 6 years. However, six years is almost the mandatory scrapping period. However, domestic ** will be relatively cheap.

How to choose a gas water heater 1, look at the hot water yield of the gas water heater.

The amount of water per minute indicated on the model number of a gas water heater is for a temperature rise of 25, e.g. from 20 to 45. The national standard stipulates that the actual water output is not less than 90% of the specified value, that is, the water output of an 8-liter water heater is qualified if it reaches more than liters. Easy inspection method at the time of purchase:

After the water heater is operating normally, it is better to feel the hot water with your hands and the water output is large. The state also stipulates that the maximum temperature rise of water heaters is 50. In general, it is best not to buy a gas water heater with an outlet temperature of more than 70.

Because the higher temperature is easy to scale the water pipes, shorten the service life of the water heater.

How to choose a gas water heater 2, look at the starting water pressure of the gas water heater.

When the gas water heater is working, the gas fire is very strong, and it is never allowed to dry boil without water, and the water heater is generally started by opening the water valve. When using low water pressure, it is necessary to pay attention to adjusting the gas flow, otherwise the water is less and the fire is large, which is easy to produce high-temperature hot water to burn the human body, and it is easy to generate scale and affect the life of the water heater, so you must buy a thermostatic water heater.

How to choose a gas water heater 3, look at the combustion performance of the gas water heater.

The combustion performance of the water heater is related to the thermal efficiency and CO content. The user can observe the flame to know what is going on with the burner. International regulations stipulate that the normal flame should be uniform blue, no yellow flame or black smoke, and the flame is stable without flame separation or tempering (etc., otherwise it means that the burner is not working properly and cannot be used.

In order to increase the fire power or increase the water output, some users expand the gas nozzle hole by themselves, which will improve the situation of low air pressure, but in the case of normal air pressure, this will have adverse consequences, so that the burner can not be in the best state of design, resulting in excessive carbon monoxide and so on.

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Isn't it necessary to buy too good? On what basis?

1.A gas water heater must be bought well, because a gas water heater is a special product, and its safety is of paramount importance. There are many types of gases, including artificial water gas and liquefied petroleum gas.

natural gas, etc., where water gas contains carbon monoxide.

and other highly toxic ingredients. LPG is an alkane.

and olefins, which are also toxic. Pure natural gas is methane.

and hydrogen, which is non-toxic, but may contain hydrogen sulfide in actual natural gas.

It is highly toxic, don't be too careful. In addition, even if natural gas is not toxic, incomplete combustion in the absence of oxygen will produce highly toxic carbon monoxide, which endangers human safety. During the use of gas water heaters, it is inevitable that there will be leakage and incomplete combustion after a long time.

Therefore, gas water heaters belong to a special type of household appliances. Compared with TV fans, it requires strict national standards and elimination systems, and the requirements for product quality and reliability are higher than those of ordinary household appliances.

2.Gas water heaters involve gas, and once an accident occurs, it is a major accident, so there are accidents involving the use of gas water heaters that cause death every year. Some leak air, and some are not standardized, sending exhaust gas to the room, and electrocution.

The installation of big brand gas water heaters will be more standardized. In addition, a good water heater will be very sensitive, able to detect subtle problems, and report faults and shutdowns, including poor smoke extraction, insufficient oxygen in the inhaled air, and live grounding wires.

Wait. Also, when you take a bath with a gas water heater, there will be a very cold water and a very hot water when you turn the hot water on and off. If you're using a really good water heater, it's basically hard for the human body to feel this temperature change unless you turn it off for too long and let the water in the pipes cool.

A good water heater has a bypass pipe, which is controlled by a computer board to regulate this temperature. Those who make water heaters know this principle, and they all have these configurations, but there are very few that can do a good job and control accurately.

3.The premium that comes with brand differences. Just like buying a car, some luxury brands are of course expensive. On the other hand, the materials used are different. A good quality gas water heater heat exchanger is copper.

and phosphorus deoxidized copper, low-cost gas water heaters use aluminum heat exchangers. Copper heat exchangers are more durable, with better thermal conductivity and efficiency. Aluminum heat exchangers are prone to burn-through, posing a safety hazard.

The high-quality gas water heater has complete functions, constant temperature water outlet, gas leakage control, and various intelligent controls. Low-cost gas water heaters do not have this feature. If a low-priced gas water heater is feature-rich, it cannot be purchased because it squeezes the cost of core components.

Low-cost gas water heaters do not have wind adaptation and gas detection functions, and lack certain safety.

No. When choosing a gas water heater, you must choose a better one, because the quality of this water heater is better, and the cost performance is relatively high, and it is not easy to be damaged, and the later use effect is also better, and there will be no failure.

Gas water heaters don't mean don't buy the best, because gas water heaters are a special product, and its safety is important, so be sure to buy the best.

Q: How to choose a gas water heater?

Answer: The choice of gas water heater mainly depends on the following points.

1. Gas type;

When buying a gas water heater, you must first confirm what kind of gas is used in the home. If you use natural gas at home, then choose a water heater with the "T" logo when choosing a gas water heater, if you are using artificial gas at home, then choose a water heater with the "R" logo, and if you use liquefied gas at home, then choose a water heater with the "Y" logo.

2. The choice of liters;

The most important thing to choose is to look at the gas meter specifications at home, choose 12L 13L, you can choose 16L, G4 can be optional, one kitchen and one bathroom 13L, one kitchen and two bathrooms 16L These words do not need to be believed, just look at the specifications of the gas meter.

3. Security; Wandering limbs.

Gas water heaters can be divided into four categories: in-line type, flue type, strong type and balanced type according to the exhaust method. The mainstream Qinshi on the market is the strong exhaust type and the balanced type, the strong exhaust type is to force the exhaust gas produced by combustion to be discharged outdoors, and the balanced type is to extract the outdoor air for combustion, and the exhaust gas is forced to be discharged outdoors, so these two are the safer of all gas water heaters.

4. Constant temperature effect;

There are three ways to keep the temperature of the gas water heater, which are the constant temperature of the gas proportional valve, the constant temperature of the water and gas double adjustment, and the constant temperature of the water servo, of which the water servo has the best constant temperature effect, followed by the double adjustment of water and gas, and finally the proportional valve of gas.