Solar energy and electric tankless water heaters each have their advantages and disadvantages.
Solar energy is more environmentally friendly, it is traditionally considered energy efficient. However, in fact, it cannot be used on rainy days, mornings and winter. If used, it requires an electrical auxiliary. heating and electricity, therefore subject to greater restrictions, not very energy efficient. In addition, the water used stagnates over time, foam develops and the water quality is poor.
Installing electric water heaters has higher energy requirements, but your home's wiring can be used. The reason why some netizens say that the effect is not good after two or three years is because of the problem of the heating body. Currently on the market, instantaneous electric water heaters are generally divided into bodiesmetallic and non-metallic heaters. Generally, non-metallic heating bodies are advertised as quartz, crystal, etc., but in fact they are electric heating films added to glass. The thermal efficiency will decrease after one year of use, and metal heating bodies will not encounter this situation, so it is recommended to choose a metal heating body when purchasing an instantaneous electric water heater. Usually, if you ask for it at the mall, the. a buying guide will tell you what the heating body is.