tradeoffs

last summer, i slept with no air conditioning and it wasn't that bad. we had a window fan unit that provided good circulation. this summer, i have a second hand a/c unit that makes more noise than is reasonable or bearable. i am a heavy sleeper, and this thing wakes me up several times a night. the real problem is that the incredibly loud spurts are periodic. they sneak up on you and ruin a perfectly good stretch of sleep. the bonus is cooler air, but i'm willing to sacrifice that, especially considering the environmental benefits of using less energy.