# 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. Vikash Dwivedi
Apr 21, 2018

What should i enter into electrical equipment i.e. actual rating of equipment in watt or i have to enter Heat Dissipation in watt.

2. Prashanth
Apr 15, 2018

3. Richard
Jan 04, 2018

Dear all,
I am interested in using the spread sheet but I have an issue. The spread sheet requires a password so as to edit, what’s the password.
Thank

4. GORDON ALLISON
Apr 25, 2017

air con calculation looks ok. What are the chances of modifying it to work for a substation, where
the amount of DOL drives, amount of free standing VSD drives of different KW ratings and soft starters are installed. Therefore taking into consideration the heat generated by each of these units.
sub station will have no windows and fire proof door [steel/flameproof coated wood]
one to consider all drives running 24hrs.

5. 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.

6. shabmanu
May 18, 2015

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

7. 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

8. 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.

9. andrewelec
Aug 28, 2013

Hello.

How can we make a correction to external temperature?

10. Mohamed Shafei
Mar 05, 2013