Thermopod units can be fitted to existing hot water cylinders.
They will then take over the heating of the hot water day and night 365 days of the year. The existing heating system can simply remain in place as a secondary source should you ever need additional generation or any back-up solution.
Thermopod units are frequently fitted with new hot water cylinders.
This can be because there was no cylinder previously installed, or the cylinder was old and needed to be upgraded, or because the customer wants to change from non-pressurized to pressurized.