A Heat Pump Reverse Cycle Air Conditioner (RCAC) is the most efficient method of heating and cooling you home. Heat Pumps have a COP (Coefficient of Performance) of 3-4 , meaning for every unit of electrical energy put in, 3-4 heat/cooling units are produced.

Remember there are financial incentives available to assist with your home via the SA REPS initiative

Robert from Everything Electric talks Heat Panels and a more targeting approach to heating certain spaces - for residential & commercial applications.

(core interview 2:43-16:50)

You could also consider installing an Infrared Heat Panel in those rooms that an RCAC is not always possible.

These panels can be freestanding or mounted to the wall or ceiling and can have thermostat/timer functionality.

They are silent, emissions free and efficient.

There are many different suppliers, such as ;

https://www.heat-on.com.au/far-infrared-technology/

https://www.herschel-infrared.com.au/infrared-heating-panels/