Solar water heaterCompared to electric water heaters, electric water heaters are better. Since the amount of hot water from the solar water heater is limited, there is usually no hot water after washing two or three people, and it is necessary to use electricity to boil at water again, which takes a long time. Solar water heaters are greatly affected by weather conditions and cannot be heated without the sun. But electric water heaters can be used in any weather.
You also need to use electricity to boil water when there is insufficient sunlight in winter. Maintenance is also troublesome as solar water heaters are installed on the roof of the building and one has to go to the roof for maintenance.
The installation cost of solar water heaters is high and the installation is relatively complicatediqued. Additionally, hot water is still only available in summer. In the cold regions of the northwest and northeast, electricity is mainly used for supplementary heating. water in winter, and it must be installed on the roof of the house. If exposed outdoors often, the material will age over time.