15 Min. Tower A/C







In this instructable (my first) I will show you how to make a simple desktop cooler capible of putting out air up to 30 degrees cooler than ambiant temperature. I will go over a list of the materials, how to assemble it and how to operate it. Not the prettiest thing but when its 90 degrees inside at night, who cares! Also do note that although there may be slightly similar ideas and designs this is my own original idea.
  Materials:                                                                Tools:
Duct Tape                                                               Screwdriver
9v Battery                                                                Hacksaw
120mm PC Fan                                                       Cutting tool
Sharpie (for marking)                                              2in. Holesaw
Window Screen (or equivalent)                              Razor saw (or something else sharp)
4" pipe, 10 inches long
Pet Water Dish (4 in. is great)

                                          [ [ http://www.youtube.com/watch?v=Yw4uC8Yv1K8 ] ]


Step 1:

Step 2: Cut Up the Pipe!

First cut the pipe in two pieces one 4 in. and the other 6in. Then you will want to drill a 2 in. hole in the middle of the 6 in. piece (the longer one) of pipe. this is to let the cool air out.

Step 3: Chop Up the Fan!

Next you will want to cut and file off the corners of one side of the the 120mm fan so it will fit easily in the top in the smaller piece of pipe. Note, don't cut off both sides or it will fall in to your AC. Dont make the fit to tight eather or you can't put ice in the unit.

Step 4: Add the Screen!

Now cut a piece of the screen to fit on the big piece of pipe.Tape it on securely. Then tape the two units together with the screen part between them (The top and bottom pieces of pipe).

Step 5: Make the Drip Tray!

Now use the same process described in the previous step to put the screen on the top of the pet bowl. Then tape it to the bottom of the main unit.

Step 6: Finishing Up!

By now your unit should look something like this. All you have to do now is tape on the 9v battery,fill the top container with ice (leave a half inch for the fan), place the fan in, plug it in and finally cool down!!!



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    7 Discussions


    6 years ago on Introduction

    Hi! The pet bowl is for catching the water, right? How long does the battery last? I think I'd like to do this with a power inverter.
    Thanks for the write-up! :)

    1 reply

    Reply 6 years ago on Introduction

    yes the bowl catches the water. You could also keep the pipe 4 inches longer and add an end cap instead of using a bowl. The battery life depends on the fan (I honestly use an plug in transformer myself), its the ice that runs out quick(about 15-30mins) I also made another prototype which looks better and I'll post that before the end of the video. Thanks for looking :)


    5 years ago on Introduction

    since the fan is blowing down wouldn't it help to have another fan at the bottom to blow out the cool air

    1 reply

    Reply 5 years ago on Introduction

    I have tried it with another fan at the bottom, but it only slightly helps the airflow. Also one drawback with a bottom fan is that some of the drips get thrown through the fan and spray the air with water droplets.


    7 years ago on Introduction

    More attractive design to be released in the next few weeks.


    7 years ago on Introduction

    Hey people feel free to comment! Im more than happy to help you with any questions you may have :)


    7 years ago on Introduction

    interesting project, don't be discouraged by a lack of comments