Explore Create Contests Community With Instructables you can share what you make with the world and tap into an ever-growing community of creative experts. create instructable share what you made with text, photos, video, and files Create » create collection gather your favorite instructables together Create » Groups » Forums » Answers » let's make Login Sign Up Log In share what you make > Summer #mikehacks Craftsman MAKEcation DIY Lighting and Electrical RadioShack Fashion by ehensel1 Download 3 Steps + Collection I Made it! Favorite Intro Before I get started, I have to give props to Geoff Milburn, at http://www.gmilburn.ca/ac/ whose plan it was I copied. I'm not smart enough to think... 1 I took the grate off of my fan, so I could put the heat exchanger on the inside, hopefully making it look better. I'm using copper tubing as the heat ... 2 Now, the cheapie pump ...