# Calculate Size of Air Conditioning For Room

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The following calculation spreadsheet is used to determine the capacity of room air conditioner:

1. Size of Air Conditioning for Your Room
2. AC Size in BTU/Hr
3. AC size in Tone
4. Heating and Cooling BTU

Following Room Details are inputs:

• Length of room(foot)
• Width of room(foot)
• Windows in north side
• Window in south side
• Total room area in sq.foot
• Is there any blinds on the windows?
• Number of persons who may utilize the room
• Electrical Appliances in The Room:
• Electrical Equipment
• Electrical Lighting
 Software: Calculate size of air conditioning for room Version: 22.8.2012 Developer: Jignesh Parmar Size: 43 kB Price: Free Downloads: Right here | Get Download Updates | Get Technical articles

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1. Gopi
Jan 03, 2016

I hope, we must consider the volume of the room in calculations. Since heat transfer coefficient value for window is higher compared to bricks wall, we shall consider the windows in all directions.

2. shabmanu
May 18, 2015

what if the the window is in east and west? ,do we need to consider door?

3. shabmanu
May 18, 2015

sir
if the window is facing east or west ,what will be the changes in calculation ,do i need to consider door measurement ,waiting for ur reply ,thanks

4. Hayder
Oct 23, 2014

Hello,
It is wonderful excel sheet, but how can I calculate the AC capacity without input the height of building, I have a room 20×10 m2 and 12 m height and the result of this sheet does not match the requirement.

5. andrewelec
Aug 28, 2013

Hello.

How can we make a correction to external temperature?

6. Mohamed Shafei
Mar 05, 2013