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Galvio Enterprises

Buying guide

Inverter vs Non-Inverter AC: Which Should You Buy?

Quick answer: Buy an inverter AC if you will run it for more than a few hours a day: it holds the temperature by slowing its compressor down instead of switching it on and off, which uses noticeably less electricity and is quieter. A non-inverter (fixed-speed) AC costs less to buy and can make sense for a room used only occasionally.

How they differ

A non-inverter AC's compressor has one speed. It runs at full power until the room reaches the set temperature, switches off, and switches back on when the room warms up again. That on-off cycle wastes energy and makes the temperature swing.

An inverter AC's compressor changes speed. It cools quickly at high speed, then slows down and keeps running gently to hold the temperature steady, which is more efficient and more comfortable.

Inverter ACNon-inverter AC
Running cost over long hoursLowerHigher
Price to buyHigherLower
TemperatureSteadySwings up and down
NoiseQuieter at low speedLouder when it cycles on
Best forDaily use, bedrooms at nightOccasional use

Star rating still matters

The BEE star rating on the label compares efficiency between models of the same type. A 5 star inverter AC uses the least electricity for the same cooling, a 3 star model is the usual balance of price and running cost, and the saving from a higher rating grows with the hours you use it.

Our advice

For a bedroom used every night through the summer, choose an inverter AC, 3 star or higher. For a guest room or a room used a few times a month, a fixed-speed window AC is a sensible way to save on the purchase price.

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Inverter split ACs

Frequently asked questions

Yes, if you run the AC for several hours a day. The lower running cost adds up over a summer and over the AC's life. For occasional use, a non-inverter AC can be the better value.

Updated September 2026. Written by Galvio Enterprises. Prices shown are our current selling prices.