The EP Series UV unit automatically sanitizes the water around the clock for pennies a day. Simply incorporate the UV unit into the equipment system and power with a standard 120V plug-in power connection. For those accustomed to using chlorine or bromine, the drastic reduction in chemical usage will be obvious in the first month. With a 16000 hour (2 year) UV lamp life, routine maintenance is reduced to a 15-min bulb change every 2-Years