It is understood that most of the early gas water heaters are direct-vent type, the combustion of exhaust gases directly into the room, resulting in thousands of dangerous accidents in the world. May 1, 2000, the state stopped the sale of direct-vent gas water heaters. According to national craft standards, the service life of gas water heaters for 6 years -8 years, the national family is still using in-line gas water heaters have come to or near the end of the period, if you continue to use, safety hazards will be increasingly large.
Now on the market sales of water heaters are mainly gas and electric two. Gas water heaters (domestic) low price, fast heating, temperature stability, enough hot water, but can occur harmful gases, not in accordance with the provisions of the installation and use prone to accidents. Storage type electric water heater clean, easy to install, easy to adjust the temperature, less accidents, but the volume is large, the price and the use of the truth is higher, especially once the inner liner is difficult to repair. In addition, in recent years, solar water heaters because of its energy-saving, money-saving features and gradually accepted by consumers. However, this product is subject to the limitations of the environment, floor, public interest, plan governance and distribution methods and other conditions, prone to unforeseen problems.
Selection of water heaters to consider their performance characteristics and their own conditions, installation and use of water heaters must be strictly in accordance with the response to the “manual” operation. As usual, the first consideration should be safety and price, installation and use of factors. The choice of gas water heaters should be strong discharge type, especially the balanced type is good, as long as the indoor air circulation, especially the normal exhaust gas crowding and related facilities intact, you can rest assured that the use; choose storage type electric water heater is the main residential power supply design, especially the ground installation in line with the scale, the best to cut off the power supply when using, to prevent accidental leakage of electricity accident, usually keep the drainage facilities circulation, to prevent accidental water run.
