Your typical water heater uses around $440 dollars worth of electricity per year. You can save that money by going solar. There are solar water heater kits you can buy for $250 to $1,200, so they pay for themselves very quickly.
There are three different types of solar water heaters. They all capture solar heat to warm water then store it until it's needed and are usually installed on a roof for maximum sun exposure.
Batch collectors, also called integrated collector storage systems, are the oldest types of solar water heaters and they are still popular because they need very little sunshine to heat water and they are simple to install. Batch collectors use large black tanks or tubes to collect solar heat to warm the water inside of them.
Flat-plate collector water heaters have a heat absorbing plate that collects heat from the sun, then transfers the heat to copper tubes. As the tubes heat up, so does the water inside them, though not as consistently as other choices.
Evacuated tube collectors are considered the most productive solar water heaters. Glass or metal tubes full of water or heat transfer fluid are placed inside larger glass tubes, creating a vacuum. In this vacuum, very little heat is lost, so the water is heated very efficiently. Another benefit is it can even be used in outdoor temperatures as low as 40 F, according to the Environmental Protection Agency.
Solar water heaters, more than the other options, can get a bit pricey and should be installed by a professional. Still, in some applications, they can be a money-saving move. They are also eligible for a federal tax credit. A professional can help you select the right size for your needs, but you can start exploring your options, like these evacuated vacuum tube offerings from Duda, starting at $1,310.