How do I choose the right air conditioner size for my room?

<p style=";text-align:left;direction:ltr"><strong>Weather of Arabia</strong> - In order to purchase a practical and energy-saving air conditioner, you must first take into consideration the appropriate size of the room to be provided with the air conditioner. This step is very important for two reasons:</p><p style=";text-align:left;direction:ltr"></p><ul style=";text-align:left;direction:ltr"><li style=";text-align:left;direction:ltr"> If you install a size smaller than what is appropriate, it will not cool the room as it is appropriate, especially in the summer season, which is characterized by hot weather.</li><li style=";text-align:left;direction:ltr"> If you install a size larger than what is appropriate, this will affect your comfort because of the excessive cooling, and it will lead to you turning it off and on more than once in one session, and thus more consumption of electrical energy and an increase in the electricity bill for no reason.</li><li style=";text-align:left;direction:ltr"></li></ul><h3 style=";text-align:left;direction:ltr"> <strong>Therefore, to determine the appropriate size of the air conditioner, all you have to do is use the following equation:</strong></h3><p style=";text-align:left;direction:ltr"> Room length (m) x room width (m) x room height (m) x (300) or (250) / 12000</p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> So that the number 250 or 300 crosses the amount of cooling per cubic meter. In the event that the room is exposed to the sun and has many windows and its temperature is high, the size of the room is multiplied by 300, but in the case that the room has a moderate atmosphere, the size of the room is multiplied by 250, and then we divide the result by 12000, which is the amount of heat units that come out of an air conditioner of size 1 ton per The hour is universally expressed in units (BTU/h).</p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> <a href="https://www.arabiaweather.com/content/5-%D8%B9%D9%84%D8%A7%D9%85%D8%A7%D... signs your AC needs to be repaired</a></p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> Example: Suppose we need to install an air conditioner for a room whose dimensions are (length: 4m, width: 4m, height: 2.5m), which is a bedroom consisting of one window (not exposed to much sun) and the temperature is moderate.</p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> If we want to apply the equation above, the output will be as follows:</p><p style=";text-align:left;direction:ltr"> 4 x 4 x 2.5 x 250 /12000= 10000/ 12000= 0.84</p><p style=";text-align:left;direction:ltr"><br /> We round the resulting number to the nearest integer, meaning that the size of the air conditioner suitable for the room with the mentioned dimensions and conditions is 1 ton.</p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> Source: <a href="https://www.jafarshop.com/blogs/blog/%D9%83%D9%8A%D9%81-%D8%A3%D8%AE%D8%... Shop website</a></p><p style=";text-align:left;direction:ltr"> Link: <a href="https://www.jafarshop.com/">www.jafarshop.com</a></p>