UltraPure EUV3 UV Ozone Generator - High Ozone Output & Long life We have supplied Ozone generators to the Pool and Spa industries since 1982. There are two types of Ozone Generators. A Corona Discharge (CD) unit uses a 'spark gap' to create Ozone much as lightning does. CD units require an air treatment system. Our research proves, CD Spa units cease to produce Ozone within six months running six hours per day - 1100 hours of operation. Therefore, we offer only Ultra Violet (UV) Spa Ozone generators which produce Ozone in the same way sunlight makes the earth's Ozone layer. Our New Electronic UltraPure UV Spa Ozone generator has high (initial CD) output and operates on untreated (ambient) air. It is effective for at least four years, at six hours per day or 8800 hours of operation. No combined halogen in the water or sufficient amount of Ozone to 'bleach' test-crystals quickly, to indicate an effective Ozone output. Our EUV3 is made with advanced electronics, which extend lamp life, eliminate pack interference and protects it from electrical irregularities. It is field serviceable by an authorized dealer; and, is covered by a conditional threeyear full replacement warranty.