What is DC Inverter AC?

Air conditioning units that were once considered luxurious products are slowly becoming common household appliances. Nowadays, even a lot of middle-class households have air conditioning units. The decreasing costs and the emergence of new technology have facilitated the adoption of air conditioning units.

Now, this article focuses on one specific technology used in air conditioners. The article gives detailed information on DC inverter air conditioners and what makes them different from the rest.

What is a DC inverter Air Conditioner?

A DC inverter air conditioner has the ability to regulate the cooling and heating effect by changing the compressor’s output. It senses the room temperature and provides different levels of cooling (or heating) effect. It saves electricity by regulating the compressor depending on the environmental requirements.

The primary purpose of the DC inverter is to convert alternating current to direct current. The DC inverter is capable of producing alternating current based on the required frequency and voltage. This variable frequency alternating current is used to drive the motor.

When the frequency of the current is changed, it changes the speed of the motor. This causes the compressor to be operated at variable speeds.

How is it Different from Normal Air Conditioners?

The normal air conditioners lack the feature of producing variable levels of cooling. The compressor either runs at full capacity or it turns off. The compressor activates when the ambient temperature falls below a certain degree or increases above a certain degree.

The compressor of normal air conditioners then runs to bring the room temperature within the specified range. The normal air conditioners do not actively regulate the ambient temperature.

On the other hand, a DC inverter uses a processor to sense the surrounding temperature and modifies the speed of the compressor accordingly. In this way, the DC inverter maintains a uniform temperature in the room.

How Does a DC inverter Air Conditioner save Electricity?

The main advantage of a DC inverter air conditioner is that it is eco-friendly and saves electricity. One would wonder how it can save electricity as the compressor runs all the time. The answer to this is very simple.

Even though the compressor runs all the time, it does not use its full capacity. It only runs at a moderate speed depending on the ambient temperature. Only in very hot or cold conditions, it runs at its full capacity. The DC inverter air conditioner saves electricity by responding to the ambient temperature and optimizing the compressor speed.

More power is required to turn on the compressor as in the case of non-inverter air conditions. Also, it runs at full capacity all the time which requires excessive power.

Advantages of a DC inverter Air Conditioner

  • DC inverter air conditioners have high efficiency as they do not have start/stop cycles.
  • Their operating costs are very low.
  • They maintain uniform ambient temperature.
  • There are no fluctuations in electricity as they do not put extra load on the power supply.
  • The life of other electrical components is also safeguarded as there are no voltage fluctuations.
  • The DC inverter air conditioners run quietly.
  • They are eco-friendly in nature – consume less electricity and use environment-friendly gases that do not damage the ozone layer.
  • The DC inverter air conditioners can run on solar power or UPS.
  • They can work smoothly even at low voltages.

Disadvantages of a DC Inverter Air Conditioner

  • The DC inverter air conditioners are very expensive.
  • It uses complex built-in circuits and hence is difficult to repair.
  • The cost to repair the air conditioner and its spare parts are expensive.
  • Most local service technicians are not skilled enough to repair DC inverter air conditioners.
  • These ACs use refrigerant gases that are not easily accessible.

Frequently Asked Questions

1. Is it true that DC inverter ACs save electricity?

The compressors of DC inverter ACs do not turn on and off every time. Furthermore, the compressors do not run at full speed. Hence, DC inverter ACs consume less power and save electricity.

2. Should I leave my inverter AC on all the time?

When you leave your inverter AC on all the time, the compressor does not have to work hard to maintain the temperature. On the other hand, if you turn it on back again, it consumes more power to produce a cooling (or heating) effect.

3. Do you need a stabilizer for inverter AC?

Ideally, you don’t need a stabilizer for inverter AC as there is very minimal voltage fluctuation. However, connecting your inverter AC to a stabilizer will add an extra layer of security.

4. Can you use inverter AC on UPS?

Yes, you can use inverter AC on UPS. However, you need to make sure that there is no overload. If the UPS is overloaded, it will shut-off automatically.

5. How many hours should AC run per day?

It depends on the ambient temperature. On average, you can run your ACs for 8 hours on summer days.


The DC inverter air conditioners are eco-friendly, consume less power, and use gases that are not harmful to the atmosphere. They have far outweighed the conventional air conditioners in all aspects, barring the price. However, they compensate for that in the long run with low electricity bills.

If you have any further queries or doubts regarding the DC inverter air conditioners, let us know in the comments section and our time will help you out.