There are a few things to consider when trying to determine the best solar water heating system for your needs. The first is the climate. If you live in an area with a lot of sun, then a solar water heating system is a great option. However, if you live in an area with a lot of clouds, then a solar water heating system might not be the best option. The second thing to consider is the size of your home. If you have a small home, then a solar water heating system might not be the best option. However, if you have a large home, then a solar water heating system might be the best option. The third thing to consider is the cost of the solar water heating system. Solar water heating systems can be expensive, so you will need to make sure that you can afford the system before you purchase it.