Are you living anywhere in Northern USA or Canada? If yes, then you should consider using a closed loop or an active solar water heating system for hot water requirements at home. This system requires a glycol based heating fluid that won’t freeze during winter months.

However, a drain back system or a compact solar water heater can be used in other southern areas. The areas don’t have any risk of damage due to freezing. When the freezing occurs heavily, it’s necessary to protect the system with