While there are advantages of solar water heating systems, they also have some disadvantages. A solar water heater is an expensive investment. If well maintained, it will last for at least 20 years. Moreover, the system is inefficient if it doesn’t receive enough sunlight. Therefore, it might not be suitable for states with less sunny conditions.
Another disadvantage is the need for a roof. If you’re using solar panels, you need to mount them on your roof, which may negatively impact the aesthetics of your house. In addition, the panels can damage the waterproof layer on the roof. You should also make sure to install them where they receive the maximum amount of sunlight each day.
Solar water heating systems can be extremely inefficient if you don’t install them in the right place. They use the sun to heat water, but that heat eventually escapes to the outside, reducing the efficiency of the system. Also, you need to find an appropriate storage tank. Generally, you need a storage tank with a capacity of 1.5 gallons per square foot of roof area. A solar water heating system can meet your water needs during the summer months, but you might need to supplement your system with a conventional backup system during the winter months.
There are three types of solar water heating systems. There are passive and active systems. Passive systems use water tanks inside the solar collectors, while active systems rely on pumps to circulate the working fluid.