There are two types of Solar Water Heater :
1. ETC (Evacuated Tube Collector)
- In this type of SWH, system is fixed & does not change according to customer's need.
- This type of system comes with glass tube & is highly fragile i.e. if any glass tube breaks, the system will stop working.
- This type of S.W.H. is less costly as compared to FPC systems.
- This type of system works both on solar & electricity.