Solar hot water systems are a very economical choice for many reasons. If you don’t live in a sunny state but have access to sunlight all day, then you can have a solar hot water system working just fine. There is no reason not to choose this type of system over other options, and if your current water heater is more than 25 years old, it may be time to consider switching to an energy-efficient alternative heating system. There are benefits to both the environment and your pocketbook. It is much more cost-effective than other types of systems, even those that use oil, natural gas, and coal to heat water.

solar hot water system

Build a Solar Hot Water System

The most important part of a solar hot water system is the collection of the sun’s heat transfer fluid (usually referred to as a heat exchanger or collector). The collector is built partially in the shade of the house and partially outside in a well-ventilated area. When sunlight hits the collector, it heats up the fluid which flows through tubes in the collector. In order to prevent fluid loss, the collector has a drain fitting. The fluid then flows into the heat exchanger tank, where it is heated and returned to the collector, where it is put back into the sun.


To make your solar hot water system work, there are a few things to consider. First, you need to ensure that your collection site has adequate cross sectional area (the size of your array). Second, you need to make sure your collector has a sufficient amount of baffle to distribute the heat equally throughout the length of the tubes in the collector. Third, you need to install sufficient venting and return air ducts so that you don’t get condensation between the panels and the collector. Fourth, you need to protect your collector’s from the sun so that they don’t get too hot. And Fifth, if you’re using copper tubes, you need to insulate them to prevent corrosion.