Cooling capacity of the air conditioner

To find out the exact power of the air conditioner needed for a particular room, the calculator will help, taking into account factors such as:
• Area of the territory;
• Ceiling height;
• Level of insolation, in other words, how much the room is lit by sunlight;
• Number of computers, TVs in the room;
• Number of people who are in the room all the time.


Room area, m2
Ceiling height, m
Insolation (degree of sunlight exposure)
Number of computers and/or TVs
Number of people constantly in the room
Air conditioner power, kW

You can also use the formula:

Q=Q1+Q2+Q3

Q1 represents the power of the air conditioner designed to work in an empty room (windows are taken into account).

Q1=S*h*q/1000

S – area of the territory;
h – ceiling height;
q – level of room lighting by sunlight (30-shade, 35-average level, 40-excellent lighting);

Q2 – these are heat gains that come from the human body (can be in the range from 0.1 to 0.3 per person);

Q3 – heat gains that come from household appliances (0.2-0.5 per unit).