What's the Difference between AC Inverter and DC Inverter?

Many people notice "inverter" when choosing air conditioners. Inverter air conditioners could better adjust the compressor speed compared with non-inverter one, so that it could achieve energy-saving, low noise, and more comfortable temperature control. However, it divides into two directions, DC Inverter and AC Inverter. What are the differences?

1. Working function

AC Inverter

It adopts AC motor inside of the compressor. It's an old technology in which the motor speed changes according to the adjustment of the power frequency. The control accuracy is limited.

DC Inverter

It adopts a DC motor inside of the compressor. The power supply is converted from AC to DC, and the inverter module controls motor speed precisely. Compared with AC inverter, DC inverter can achieve flexible control and higher efficiency.

2. Energy efficiency

AC inverter: Low energy efficiency ratio, out of date.

DC inverter: High energy efficiency ratio, it becomes the mainstream in air conditioner industry.

3. Noise

AC inverter: Limited control accuracy makes it easily shake and triggers noise during operation.

DC inverter: Stable speed adjustment, low noise; DC inverter air conditioners are suitable for bedrooms, offices, and other noise-sensitive places.

4. Lifespan and maintenance

AC inverter: Low effiiency motors create more heat, which quickly wears out components.

DC inverter: The motor generate less heat and works more stable It has longer lifespan.

5. Price

AC inverter: Low cost, cheap price.

DC inverter: Higher technology, higher price, more energy-saving.

6. Application

AC inverter: Mainly used in early inverter air conditioners and places with loose energy efficiency requirements.

DC inverter: It has been the mainstream nowadays. Almost all high-profile models of air conditioners and heat pumps are equipped with DC inverter technology.

The DC inverter and AC inverter air conditioners are the products of two eras. They are different in many aspects. AC inverter is transitional , while DC inverter is the current mainstream solution. For most of us, if your budget allows, a DC inverter split air conditioner is a better choice, as it not only saves energy but also provides a quieter and more comfortable living environment.