When you are ready to buy an air conditioner, should encounter such a problem: choose an inverter or a non-inverter air conditioner?
In fact, both of them have advantages, how to choose one of both depends on which one suits you better.
Let me give you some knowledge about them.
Differences Between Inverter And Non-inverter Air Conditioner
1. Compressor and control system
Non-inverter air conditioner uses a fixed speed compressor running the whole system to achieve cooling or heating function, the compressor runs at full speed, but stop working when the room temperature drops to the setting level, When the room temperature deviates from 2-3 ℃, the compressor starts up again, so the repeated on and off of compressor will bring more noise and more energy consumption.
However, inverter air conditioner uses a variable-speed compressor, and added an inverter control system, which can automatically provide the required cold (hot) capacity according to the situation of the room.
When the room temperature reaches the set level, the compressor of inverter air conditioner runs at a constant low speed to keep the room temperature at the set level all the time.
ATTENTION: Inverter air conditioner has two electrical boards, one is located at indoor unit, another is at outdoor unit, two boards need matching to run the air conditioner normally.
However, non-inverter AC has only one electrical board, located in indoor unit.
There is the video to show the compressor working difference for non-inverter and inverter air conditioner↓
2. Voltage scope
The normal voltage range of non-inverter air conditioner is 198-242V, and the voltage range of inverter air conditioner is 160- 265V. Relatively speaking, the voltage range of inverter air conditioner is wider.
Therefore, the inverter air conditioner has stronger environmental adaptability, pressure resistance, and more stable operation.
3. Cooling time and ambient temperature
The inverter air conditioner operates at the maximum power as soon as it turns on, so that the room temperature can quickly reach the set temperature.
In the same environment, in order to reach the same set temperature, the time of the inverter air conditioner is 0.5-1 hours shorter than the non-inverter air conditioner.
In general, non-inverter AC (air conditioner) can’t be switched on at -7℃, but inverter AC can operate normally at a low temperature of -15℃.
4. Environmental friendliness
Non-inverter air conditioners normally use R22 or R410a refrigerant. R22 has big damage for ozone layers, has been forbidden for many countries; R410a has no damage for ozone layers, but can bring greenhouse effect, so both of them are not the ideal refrigerant. Inverter air conditioner uses R410a previously, but now has new R32 refrigerant, which is no bad for both ozone layer and the greenhouse effect at all, so it becomes the ideal refrigerant for air conditioner.
5. Energy consumption level
There is EER (Energy efficiency ratio) to measure the performance of cooling or heating function. The higher the EER value, the more heat is absorbed by evaporation in the air conditioner operation and the less electricity consumed by the compressor, that is, the cooling effect is achieved by spending less electricity.
The mathematical expression is: EER= refrigerating capacity / refrigerating power consumption. Unit: W/W or kW/h/W
For air conditioner, non-inverter EER normally is >2.8, inverter EER is >3.2, which means inverter AC is more efficient than non-inverter AC, but the price of inverter AC is higher than non-inverter.
PS: There is another calculation way for EER=BTU / W (Refrigeration capacity/power consumption), which is normally used in North America and Latin America.
6. Life span
The compressor of non-inverter air conditioner is switched on and off frequently, and the loss is relatively large; while the frequency of the inverter air conditioner compressor can be adjusted, running at a low frequency, is not easy to wear, and has a longer service life.
7. Price range
Inverter AC with the same cooling capacity is about 30% more expensive than the non-inverter air conditioner, please choose according to your budget and specific needs.
8. Noise level
Non-inverter air conditioner relies on the compressor to start and stop repeatedly to adjust the air-conditioning volume, and the instantaneous noise is louder when starting and stopping.
The compressor of inverter air conditioner will not stop, cold volume is controlled by adjusting the frequency of the compressor, which means the adjustment process is linear. Less noise than the start and stop of non-inverter air conditioner.
In this regard, the noise of inverter air conditioner is relatively small.
9. Repair and maintenance
Change the broken part to a new one normally, but must notice for inverter air conditioner: if the electric board and compressor are broken, the replacement price is much expensive than the non-inverter A/C ( air conditioner).
10. Cooling speed
The inverter air conditioner operates at high power as soon as it is turned on, so the cooling speed is fast. Generally, the set temperature can be reached within 15-30 minutes.
The non-inverter air conditioner also operates efficiently as soon as it is turned on, but the cooling speed is slow, and when the set temperature is reached, the machine stops running, meanwhile the indoor temperature will rise, which is prone to sudden cold and hot.
Therefore, in terms of experience, the cooling speed and temperature maintenance effect of inverter air conditioner are better than non-inverter air conditioner.
11. Comfort level
In terms of comfort, I would recommend inverter A/C.
The wind speed of non-inverter air conditioner is generally relatively high, and when it starts operation, the wind speed will suddenly increase, which is very easy to cause a cold.
For families with the elderly and children, the stable soft wind setting of the inverter air conditioner is more comfortable and won’t make people sick easily.
Attention: There is a video to make the comparison between inverter and non-inverter air conditioner, you can learn more from it.
Which Size Air Conditioner I Should Choose?
For your better understanding, please check the sheet below, that is very clear
Room size for different capacity ( hp means “horse power”)
Can Inverter Air Conditioner Really Save Power? How Much Can Save?
Yes, of course can save, from EER you can make this conclusion. But how much percentage can save is due to some conditions:
1. Ambient temperature
If the ambient temperature is long-time higher, like Middle East, Africa, South-east Asia, roughly in 4-5 months , every day is more than 35℃, then the inverter air conditioner can save more energy than normal places, because air conditioner needs to use for a long time every day, more hours use, more energy saving.
2. Running time
Inverter air conditioner will really save electricity for a period time; whether the inverter air conditioner saves electricity or not is related to the utilization time of your air conditioner. If you only run 2-3 hours per day, it is nonsense to use an inverter air conditioner.
On the contrary, when inverter A/C just turn on and running, if the temperature difference (setting temperature & ambient temperature) is too large, the power consumption is quite large (relative to the non-inverter air conditioner ). But if you basically turn on the air conditioner all day, then inverter air conditioner is of course the best choice. Compared with non-inverter A/C, it saves electricity at least 20-30%.
3. Room size
Air conditioner capacity should match the room size. If the room is too large, no matter inverter or non-inverter air conditioner, the cooling performance and energy consumption are both bad.
Both non-inverter and inverter air conditioners are commonly used at home. According to our knowledge above, hope you can read carefully before making the decision and don’t make the wrong choice.
So you will choose inverter or non-inverter?
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