Have you considered how you could make your existing heating system more efficient?
You can increase the efficiency of your existing ducted heating system by adding Solar Air Modules for solar pre-heating of the air – requiring less energy to run the system.
SAM systems for Solar Pre-Heating can be added on to existing ducted heating systems.
During sunny days you may even secure a significant heat without any other cost than running the fan. All you need to do is have your controller monitor and determine if it is beneficial to use the fan in the heating system to draw warm air from the collectors and distribute it via the ducted solar pre-heating system.
The same goes for using the SAM’s for solar pre-heating option for when you are using the gas heater. When the collector temperature is high enough to provide a heat contribution – and will open the valve to draw warm air form the heat collectors – and when this is not the case – e.g. at night or in rainy conditions – the controller will open the damper to draw air via the normal “return” air supply.