Indirect solar geysers also consist of one or more solar panels or evacuated tubes.

Instead of pumping water into the panels directly as one would with a direct system, an anti-freeze substance circulates through the panels.

Once the liquid inside the panels is hot, it flows to the geyser system.

The liquid then either circulates in a sleeve that is fitted over the geyser, or into copper pipes inside the geyser thus heating the water.

The copper pipes are a less effective way of heating the water in the system because only a small volume of water comes into contact with the pipes at any given time.

An indirect geyser system has a longer life span, because the anti-freeze is non-corrosive.

It also retains heat longer and can’t freeze, even in the coldest conditions.