How to tell the number of central air conditioners?
When purchasing a central air conditioner, the number of horsepower is a very important parameter, which is directly related to the cooling or heating capacity of the air conditioner. So, what do you think about the number of central air conditioners? This article will give you a detailed answer and attach structured data to help you understand better.
1. What is the number of central air conditioners?

The number of horses is the unit of air conditioning cooling capacity. One horse is approximately equal to 2500 watts of cooling capacity. The larger the number of horses, the stronger the cooling or heating capacity of the air conditioner. The number of central air conditioners is usually determined based on room area, floor height, orientation and other factors.
2. How to calculate the number of central air conditioners?
There are many factors to consider when calculating the number of central air conditioners. The following are common calculation methods:
| Room area (square meters) | Recommended number of matches |
|---|---|
| 10-15 | 1 horse |
| 15-25 | 1.5 horses |
| 25-35 | 2 horses |
| 35-50 | 3 horses |
| 50-70 | 4 horses |
| 70 and above | 5 horses and above |
It should be noted that if the room has a high floor height, faces direct sunlight or has poor thermal insulation effect, it is recommended to increase the number of tiles appropriately.
3. The relationship between the number of central air conditioners and energy efficiency ratio
Energy efficiency ratio (EER) is an important indicator to measure the energy consumption of air conditioners. The larger the number of air conditioners, the higher the energy efficiency ratio is usually. The following is the reference data of horse number and energy efficiency ratio:
| Number of pieces | Energy Efficiency Ratio (EER) |
|---|---|
| 1 horse | 3.0-3.5 |
| 1.5 horses | 3.5-4.0 |
| 2 horses | 4.0-4.5 |
| 3 horses and above | 4.5 or above |
4. How to choose the appropriate number of central air conditioners?
Choosing the appropriate number of central air conditioners requires comprehensive consideration of the following factors:
1.Room area: Select the corresponding number of watts according to the room area to avoid poor cooling effect caused by too small number of watts, or waste of energy caused by too large number of watts.
2.room orientation: Rooms facing south or west need to increase the number of tiles appropriately.
3.Floor height: For rooms with a floor height of more than 3 meters, it is recommended to add 0.5-1 pieces.
4.Thermal insulation effect: If the room insulation effect is poor, it is also necessary to increase the number of pieces appropriately.
5. Common misunderstandings about the number of central air conditioners
1.The bigger the number, the better: Excessive number of horses not only wastes energy, but may also cause the air conditioner to start and stop frequently, affecting its service life.
2.Ignore energy efficiency ratio: When choosing an air conditioner, you should not only look at the number of units, but also pay attention to the energy efficiency ratio. Air conditioners with high energy efficiency ratio are more energy-saving.
3.Ignore the installation environment: When installing a central air conditioner, you need to consider the heat dissipation conditions of the outdoor unit to avoid affecting the cooling effect due to poor heat dissipation.
6. Summary
The number of central air conditioners is an important parameter when selecting an air conditioner and needs to be determined comprehensively based on room area, orientation, floor height and other factors. The number of pieces that is too large or too small will affect the use effect, so it is recommended to consult a professional before purchasing to ensure that the most suitable number of pieces is selected.
I hope this article can help you better understand the problem of central air conditioning units and provide a reference for your purchase.
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