As we all know, gas water heater is the main equipment for hot water supply at home.
However, in the process of purchasing and using, many people don't know how to start due to lack of professional knowledge, and they are led by the nose by sales throughout the process, and finally place an order in a daze, until they find that they have stepped on the pit after using it for a period of time.
In this regard, I can say that I am a "big water heater"! In a few years, I used three gas water heaters in a row, but fortunately, I finally realized the truth of "6 not to choose" gas water heaters, which is really a real "lesson bought with money".
1. In-line water heater has great potential safety hazards
When the in-line gas water heater is working, it needs stable air pressure and water pressure to ensure normal operation.
Insufficient air pressure may lead to insufficient combustion, affect the thermal efficiency of the water heater, and may even cause safety accidents.
The exhaust gas produced after combustion of inline gas water heaters can easily be poured back into the room if not properly treated.
Not only does this pollute indoor air, but it can also be a health hazard.
Especially in a confined environment, toxic gases such as carbon monoxide in exhaust gases can cause poisoning accidents.
When purchasing, be sure to force the exhaust water heater, which adopts the design of forced exhaust, which can directly discharge the exhaust gas generated by combustion outside, effectively avoiding potential safety hazards such as carbon monoxide poisoning caused by exhaust gas leakage.
2. The performance of the upper fan is discounted
Before talking about this, it is necessary to understand how water heaters work:
Water heaters heat water by burning gas, and combustion requires enough oxygen, in order to ensure that the water heater burns properly and provides sufficient oxygen, it is usually equipped with a fan to force air in.
It is best to choose this fan that is located below the water heater, that is, the lower fan.
This is because the under-mounted fan is able to feed air directly into the combustion chamber, ensuring that the gas is well mixed with oxygen, thus improving combustion efficiency.
Top-mounted fans, on the other hand, are often connected by longer pipes and elbows, which increases the resistance to air flow, reduces combustion efficiency, and increases the noise level of the water heater during operation.
3. High water pressure start, limit the use environment
Whether it is a gas water heater or an electric water heater, they all need to transfer heat through a certain flow of water to heat the water.
Therefore, the stability of the water flow and the magnitude of the pressure are crucial for the proper functioning of the water heater.
However, if the water heater you buy requires a high water pressure to start, this can be a problem in some old neighborhoods or high-rise houses.
If the water pressure does not reach a value that can be activated by the hot water supply, the water heater will be reduced to a "decoration", with no hot water but only cold water, or a small water flow.
It is recommended to choose a water heater that supports low water pressure starting, so that even when the actual water pressure is low, the water heater can be started normally to ensure a stable supply of hot water.
4. There is no constant temperature system, and the comfort is greatly reduced
If the kitchen faucet is using water at the same time, taking a shower will be too exciting.
When buying, it is recommended to choose a water heater with thermostatic technology, which can ensure that the water temperature remains stable no matter how many people in your home use water at the same time, or how many times the faucet is turned on and off.
In this way, bathing is no longer a thing that requires courage, but a pleasure.
5. Stainless steel water tank, the durability is questionable
Although the stainless steel water tank is durable, it is prone to oxidation and scaling in a long-term high temperature environment, which affects the water quality and the service life of the water heater.
In addition, the thermal conductivity of stainless steel water tank is relatively poor, and the heating time is long, which is also easy to cause waste of gas.
In contrast, oxygen-free copper water tanks have better thermal conductivity, high temperature resistance, and scale resistance, and are more suitable as liner materials for gas water heaters.
6. If the capacity is not selected well, it is difficult to meet the needs of use
There are many specifications of gas water heater capacity, and once you choose a small one, it will not be able to meet the needs of multiple water points at the same time.
Especially in winter or during peak water consumption periods, water heaters may have insufficient water supply, which brings inconvenience to life.
How to choose the capacity of the water heater?
Or look at the type of gas meter to choose:
The gas meter is G1.6, choose a 13L-16G water heater, the gas meter is G2.5, choose a 16L water heater, and the gas meter is G4, choose a 20L water heater.
In short, when choosing a water heater, don't just look at the price and features, but also look at safety, comfort and durability. In this way, you can choose a water heater that really suits you and enjoy the fun of bathing!