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To calculate the air conditioner's power, numerous room parameters are considered. Conducting the calculation is a crucial process since the final result will determine the power capacity of the air conditioner to be purchased. The air conditioner's power capacity determines whether it can cool a room of a certain volume within a limited time to the required temperature. The air conditioner's power consumption must account for both the room's area and the presence of objects that contribute to heating or cooling the air. Accurately calculating the air conditioner unit's power ensures comfortable conditions in the room.
There is a basic method for calculating the air conditioner's power consumption. This method takes into account all necessary parameters and approximates the required value as closely as possible. Calculating the air conditioner’s power in kW involves analyzing the room's area and volume, as well as all possible heat sources.
The method includes the formula: Q = Q1 + Q2 + Q3
Q – cooling capacity, measured in kilowatts;
Q1 – sources of heat inflow (e.g., windows, walls, ceiling, and floor);
Q2 – heat influx from people;
Q3 – heat generated by household appliances.
Moreover, Q1 is calculated using a separate formula: Q1 = S * h * q / 1000
S – room area;
h – room height;
q – coefficient accounting for the room’s natural lighting level (ranging from 30 to 40 W/m3).
Q2 and Q3 are fixed values but vary depending on several factors. Ultimately, the air conditioner’s power is calculated in a range from -5% to +15% relative to the cooling capacity (Q).
We have developed an online power calculator that allows you to quickly calculate the air conditioner's power online. Simply enter the initial data into the corresponding fields and select the room's additional parameters, after which you will receive an accurate result. This calculator is excellent for choosing the air conditioner power if the calculation is for a small space (apartment, room, or office). The calculator considers the air conditioner's power consumption depending on the room’s area and volume.
It should be noted that the notion of high energy consumption by air conditioners is mistaken. The cooling capacity can exceed energy consumption by more than three times. This depends on the air conditioner's efficiency class. It is essential to thoroughly address the question of how to select an air conditioner based on room power. This will help you avoid many difficulties in the future. What power air conditioner is needed for a room or office? For this, all room parameters must be considered, and appropriate calculations must be used.
Manufacturers recommend turning on air conditioners only with closed windows, but periodically ventilating the room (with the air conditioner turned off). However, many people are interested in whether windows can be opened while the air conditioner is running. In short, it is possible, but there are nuances. Unlike ventilation, through the window, an unregulated amount of heated air enters the room, making it impossible to accurately calculate the required air conditioner power. But there is a solution - use windows in winter ventilation mode, which allows a limited amount of air into the room. In this case, you will need to choose an air conditioner with a power 20% higher than the calculated one, which will lead to increased energy consumption.
Split systems are one of the most popular types of air conditioners, as they effectively cool the air in the room considering all parameters. When choosing a split system, it is necessary to consider the air conditioner units' power and their efficiency concerning the room’s area. Thus, calculating the air conditioner’s power per m2 is an important part of selecting the appropriate model. The online calculator will help you quickly and accurately determine the required air conditioner power for the room.
