Who said central air conditioning power consumption? The energy efficiency logo tells you the truth!
With the promotion and popularization of “low-carbon†and “environmentally friendly†lifestyles, “energy saving and emission reduction†has increasingly become an important criterion for people to purchase home appliances. As the most power-consuming household appliances in the home, the energy-saving of air-conditioning is not only related to the total household electricity consumption this summer, but also affects the living environment around us. Many families think about choosing a central air conditioner for aesthetic reasons and ease of use during the renovation. However, they are worried that central air conditioners will become "electric tigers" in the home and will not save energy. So, does the central air conditioner really consume too much power? How can we quickly judge the energy-saving performance of the central air-conditioning? Here is a simple and straightforward way to teach you how to look at the energy efficiency ratio.
What is the energy efficiency ratio?
In general, as EER (Energy Efficiency Ratio) EER = rated cooling capacity / rated power (power consumption).
I believe that when you buy electrical appliances, you will notice a blue and white background color label with the "China Energy Efficiency Label". This label is a direct reflection of the energy efficiency ratio of air conditioners. It can be seen that there are 1 to 5 grade marks on the top, from green to red, and there are information on the left side from "low energy consumption" to "high energy consumption", and the upper right corner shows the energy efficiency level of this model.
Energy efficiency labeling energy efficiency rating
2.6~2.8 Grade 5 (red - high energy consumption)
2.8~3.0 Level 4
3.0~3.2 Level 3
3.2 to 3.4 secondary
3.4 and above (green - low energy consumption)
What does the energy efficiency ratio indicate?
Level 1 indicates that the product has reached the international advanced level, the most energy-saving, that is, the lowest energy consumption; level 2 indicates comparative power saving; level 3 indicates that the energy efficiency of the product is the average level of the Chinese market. At present, sales in China's market above level 3 are allowed, and levels 4 and 5 have been eliminated.
Knowing the number of air conditioners and the energy efficiency ratio, the power consumption of the air conditioner can be calculated. Taking fixed-frequency air conditioners as an example, the first-class energy-efficient fixed-frequency air conditioner achieves 3000W cooling capacity of only 0.83 degrees per hour, while the 3-level energy-efficient fixed-frequency air conditioner achieves the same cooling capacity, requiring nearly 1 degree of electricity consumption per hour.
Central air conditioning is often more energy efficient than split air conditioning
Many consumers think that split-type air conditioners are more economical and more energy-efficient. In fact, there is a misunderstanding. From the point of view of energy efficiency, the energy efficiency ratio of central air conditioners is often higher and more energy efficient than split air conditioners. The energy efficiency ratio of general household air conditioners is about 2.3~3.6, while the central air conditioner can reach 6.0 or above. The energy efficiency ratio far exceeds the level of ordinary air conditioners such as cabinets and splits. Simply put, in the case of the same amount of cooling, the use of central air conditioning is more energy efficient than split air conditioning. Taking Hitachi central air-conditioning as an example, its IPLV (that is, the comprehensive energy efficiency ratio of a single chiller under partial load operation under standard conditions) is as high as 6.35, and the energy-saving effect is evident.
In fact, the purpose of purchasing air conditioners is to be able to enjoy a comfortable life. As long as there is demand, it is better to spend more money to buy products with higher energy efficiency. Of course, if the size of the home is still large, it is recommended that you consider installing central air-conditioning, because the overall calculation of central air-conditioning is to save electricity than installing a split-type air conditioner in each room.
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