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RJ Electronics

Explainer · 5 min read

Inverter vs Non-Inverter AC: Real Electricity Savings

A practical look at how much an inverter AC actually saves over a Bangladeshi summer.

Air conditioned modern interior

How the two compressors differ

A conventional AC compressor runs at full power, then switches off, then starts again — repeating a cycle that wastes energy on every restart. An inverter AC varies compressor speed continuously, easing down once the room reaches temperature instead of shutting off.

What the savings actually look like

Inverter units typically use 30–45% less electricity in sustained cooling compared with a same-capacity fixed-speed unit, because most of a Dhaka summer's runtime is maintenance cooling, not the initial pull-down. The bigger the daily runtime and the higher the tariff, the faster the price premium pays for itself — often within two to three summers.

Savings shrink if the room leaks cool air or the AC is oversized for the space, since short-cycling hurts both types of unit.

When a non-inverter still makes sense

For a guest room used a few weeks a year, or a tight upfront budget, a fixed-speed unit remains reasonable. It is also cheaper to repair: the inverter board in a variable-speed unit is the single most expensive component in the system.

Sizing beats technology

Match tonnage to room size, sun exposure and floor-level heat load before comparing compressor types. A 1-ton inverter struggling in a west-facing 200 sq ft bedroom will cost more to run than a correctly sized 1.5-ton fixed-speed unit. Our store teams can size a unit from your room dimensions in a couple of minutes.

Still deciding?

Our store teams will walk you through the options in person.

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