1. Generally speaking, gas water heaters are instant type, and electric water heaters are also instant type. However, due to the large power, families have few choices, so no discussion will be made. Therefore, the first impression of electric water heaters is mostly of water storage type. 2. The gas water heater is instant heating type, so it is convenient, fast and small in space. Unlike storage water heaters, a large space should be reserved for the installation of a certain number of liters of water storage tanks. In addition, it is necessary to preheat in advance and worry about the shortage of hot water. However, burning
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