Solar Water Heating Systems
Solar water heating systems use solar panels, called collectors, fitted to your roof. There are three types of collectors:
Evacuated-tube solar collectors
These collect heat from the sun and use it to heat up water which is stored in a storage tank. A back up heater can be used to heat the water further to reach the temperature you want or when the sun is not available. To learn more about the different types of collectors click here.
Solar water heating systems consist of mainly 6 components.
- Solar Collectors
- Pump Station
- Expansion Tank
- Differential Controller
- Hot Water Storage Tank
- Backup Heater
To learn more about how these 6 components of a solar water heater wok together, check out this informative video put out by Bosch. It takes you through all six parts of your typical system and is worth a watch. We have no affiliation with Bosch.
According to Energy.gov how much money you save over time depends on a few things.
- The amount of hot water you use
- Your system’s performance
- Your geographic location and solar resource
- Available financing and incentives
- The cost of conventional fuels (natural gas, oil, and electricity)
- The cost of the fuel you use for your backup water heating system, if you have one.
The reality is that solar water heating systems will cost more to install than conventional water heating systems that are normally powered by fossil fuels. They do save you money over time. Most estimates range from a 50% to 90% decrease in your heating bill right away. Luckily you don’t have to take my word for it. Energy.gov just released all the information you need for “Estimating the Cost and Energy Efficiency of a Solar Water Heater.”