QuietCool is Built to Last – We use thicker gauge polyethylene to prevent warping and sagging which can cause eventual cracking and leaking. We use thick gauge aluminum angle bar and galvanized steel angle bar to form a stronger structural endoskeleton – which gives QuietCool more strength – to ensure you a longer operational life. Quietaire is engineered and manufactured to be the most energy efficient evaporative cooler available today. QuietCool uses the most energy efficient water pumps and fan motors to keep your daily operational cost at a minimum. QuietCool is so energy efficient that it costs about the same to operate as a large floor fan – about a dollar per day.