1, economic cost problem
Although the solar water heater will not generate additional electricity charges in the use process, its high purchase cost makes many consumers flinch. In addition, the installation position and orientation of solar water heater need strict requirements, otherwise it will affect its effect of absorbing sunlight, resulting in the water temperature not reaching expectations.
2. Technical constraints
The performance of solar water heaters is poor in rainy days or winter, because the energy of sunlight is low, which leads to the slow or unexpected rise of water temperature. In addition, if you live in a high-rise building, the solar water heater may not work normally due to the shelter of the building.
3, maintenance difficulties
The structure of solar water heater is complex and needs regular maintenance and cleaning. If it is not cleaned and maintained for a long time, the performance of solar water heaters will be seriously affected. In addition, because solar water heaters are usually installed on roofs and other high places, it brings difficulties to maintenance.
Disadvantages of solar water heater
1, depending on the weather: solar water heaters mainly rely on sunlight to generate hot water, so weather conditions have a significant impact on their performance. On cloudy days, rainy days or in winter, the intensity of sunlight is weakened, and the heating speed of solar water heaters will be significantly reduced, and even enough hot water may not be provided. This makes the use of solar water heaters in continuous rainy days or winter ineffective.
2. High initial investment: Although solar water heaters can save electricity during use, their initial investment is usually high. In contrast, other types of water heaters, such as electric water heaters or gas water heaters, may have more advantages in initial investment.
3. Not suitable for all regions: the applicability of solar water heaters varies from region to region. In sunny areas, such as tropical or subtropical areas, solar water heaters may be more suitable. In areas with insufficient sunshine, such as temperate or cold areas, the performance of solar water heaters may be limited.