FOR NEW SYSTEMS PURCHASED FROM QUALITY WATER TREATMENT INC ONLY! Triple O – 2 Year Extended Warranty. This 2-year extended warranty covers all components of the system (except filter), and extends the factory warranty for an additional two years beyond the original one year warranty. This extended warranty includes two replacement UV light assemblies (one for replacement at 18 months and one for replacement at 36 months). which need to be ordered on the month they are due in order to receive them for free.