Conventional vs Inverter AC: What’s the Difference and Which Should You Choose?

The choice between a conventional and an inverter air conditioner starts off simple enough. You might choose the more affordable unit, until you begin to compare electricity costs, upkeep and installation. The decision often comes down to this scenario: Do you pay more now and save later, or save money now on a simpler unit?

There is no one ‘best’ choice for everyone. Your cooling needs will differ from your neighbour’s because of your usage pattern, the number of hours used and your home’s insulation, among other considerations.

To help you decide, we take a look at conventional vs inverter AC, from what sets them apart to what makes them your ideal cooling unit.

What Is the Difference Between a Conventional AC and an Inverter AC?

The main difference between a conventional AC and an inverter AC is the compressor.

In a conventional AC, the compressor runs at a fixed speed. The compressor, which is responsible for compressing and circulating the refrigerant, maintains a high speed until it reaches the set temperature.

The compressor in an inverter AC, meanwhile, uses a variable speed. The compressor adjusts automatically to serve the temperature needs of your home or office. Instead of stopping and starting like the conventional AC, an inverter AC’s compressor slows down when it reaches the desired cooling level. It increases speed only when needed. For instance, when more people come into a room or the heat outside rises.

Do inverter ACs cool faster than conventional ACs?

Yes, inverter ACs tend to cool faster than conventional ACs because of variable speed compressors and the higher initial RPM that speeds up the target temperature.

How Does an Inverter Air Conditioner Work Compared to a Conventional AC?

An inverter air conditioner controls the incoming electrical current that goes to the compressor. This lets the inverter change the compressor speed, allowing it to operate more efficiently under different conditions and load requirements compared to a conventional AC.

Once you turn on a thermostat on a conventional AC, the system will stop or start when the space becomes too cold or too warm. The cycle will continue this way while the unit is in use. This type of AC, unlike an inverter, only has two modes: on and off. But with a smart thermostat, the inefficient process of on/off can be managed better.

Which Is Better: Inverter AC or Non-Inverter (Conventional) AC?

Whether an inverter AC is better depends on how you plan to use your air conditioner. On the surface, an inverter AC might be a better choice because it runs more efficiently and cools a space faster than a non-inverter AC.

An inverter AC is generally the better choice if you use your air conditioner for long hours (e.g., overnight or all day). This makes them ideal for bedrooms, living areas, or any space that needs regular cooling.

A conventional AC may still be the better option if you only use the AC occasionally or for short periods. This type of AC is also suitable for larger rooms.

To help you choose between conventional vs inverter AC, here’s a quick comparison.

	Conventional	Inverter
Best For	Daily but shorter use; if you only need your AC for a few hours	Daily but longer use; if you need to keep your AC on 24/7
Pros	Lower purchase price Simpler system AC repair is often cheaper, with more affordable replacement parts Installation or replacement is generally straightforward, with less ceiling cuts and reduced disruption	Lower DEWA bills over time, reducing energy consumption by up to 25% Quieter operation Consistent cooling Cools spaces quicker Tends to be more durable and have a longer lifespan
Cons	Typically higher electricity use if you run it for long hours More temperature fluctuation Tends to be noisier due to start/stop cycles Wear and tear of key components is more likely due to the on/off cycle	Higher upfront cost More complex electronics (higher repair costs), performance depends on correct sizing & installation Parts availability in the region can be a challenge Installation process can require more ceiling cuts to re-route new gas pipes from indoor units to the roof

Which AC Type Is More Cost-Effective in the Long Run?

Before buying or upgrading an AC unit, you might think about the long-term cost.

A conventional AC offers a more affordable upfront cost. It can also be more pocket-friendly when it comes to repairs and replacement parts, which are readily available.

An inverter AC, however, tends to be more expensive upfront. Repairs might cost more since inverters have more complex, interconnected components. This type of AC, however, tends to have a longer lifespan. On average, they last about 10-15 years, or up to 20 if regularly maintained. Inverters are also more energy-efficient than conventional ACs, so DEWA bills will be lower over time.

With a longer lifespan and energy-efficient operation, an inverter AC may be more cost-effective in the long run.

Whether you’re choosing a conventional or inverter AC, upkeep is essential to a cooling unit’s performance and longevity. With our annual maintenance contract, we can help keep your conventional or inverter AC in good condition.

For the month of May 2026 we are offering 10% off full property AC replacements, which also come with a FREE annual maintenance contract.

Contact We Will Fix It today.