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To understand how an inverter works we first need to look at how a non-inverter works. A non-inverter uses electricity to turn on (starting current) and then uses a running current to keep the appliance running. Once a non-inverter reaches the desired or set temperature it switches off. It then uses the starting current (which costs more than the running current) to turn on when there is a drop of two degrees Celsius.

With a non-inverter you continually get a spike in the electricity consumption which makes these units inefficient. An inverter works much the same way – using a starting current and running current – but an inverter will only use the starting current once. After it then reaches the set temperature the unit doesn’t switch off, it modulates its condenser speed.

An inverter is reactive to one degree of the set temperature and by modulating itself to one degree instead of two this also means there is a smaller temperature difference. Imagine a car – if you slam on acceleration and then slam on the brakes this is going to use more fuel than if you slowly increased deceleration and then slowly decreased.

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