As I stood there looking ten feet into the sky at the top of my 87 290 motor home I thought getting the new Coleman 13,500 AC unit up to it's perch would be impossible for one man, with the never ending advice of my wifely supervisor pushing me on! In a never ending effort to save money I called my local reopair shop and they quoted around $300 to install the unit. My mind was easily made up, but I was apprehensive, to say the least. Then I thought about those poor souls who built the pyramids! Leverage was the key to my success. I parked my pickup truck next to my MH. Then with the parking brake on I extended my 16 foot aluminum ladder from the bed of the truck to the landing zone on the roof on my MH. I tied a rope to the compressor of the AC unit, threw the rope up the ladder to the top rung , looped it around the rung and brought it back to the truck bed and wrapped it around the tie off in the bed of the truck. I pushed from the bed of the truck while my wife took up the slack in the rope and up it went to the top as easy as pie! Laying easily on the roof so as not to dent the fragile skin I took the rope off the new and tied it to the old, and repeated the process in reverse to get the old AC down and into the truck bed. Forty minutes and four big bolts later I was chilling in the Motor home. Another problem solved and three hundred saved!