The EA series of Delta UV Sanitizers has been designed to work in your spa with unmatched performance. No matter what size spa you have, we have the DELTA UV EA unit that will perform perfectly for you, day in, day out. Delta UV provides you with water quality that is unmatched by any sanitization system available for spas today. A one-time purchase of a UV Sanitizer will lower your dependence on chemicals, which saves you money. In addition, the Delta UV sanitizer comes with a UV lamp that lasts up to one year (16000 hours), which means that maintenance is as simple as changing a light bulb