Goldair 12000BTU Inverter Heating / Cooling split aircon unit. Internal unit is METALIC SILVER. This unit is ideal for cold winters as its a heating unit as well as a cooling unit for the long summers. The inverter air conditioner is quieter in its operation. This is because unlike the non inverters, they don’t automatically turn on and off every time they reach certain temperature limits; instead they just cruise along maintaining and adjusting the temperature constantly. The inverter uses less power and as a result they work less and last much longer. According to experts in the air conditioning trade, Inverter (DC Inverter) aircons consumes approximately 50% – 70% less electricity than a non-inverter ac.