We purchased an advance water purifier in 2004, and now after nearly eight years it was time to change it. No maintenance has ever been carried out on the supplier, even though based in Bangalore, no one from water purifier supplier had ever visited in the last 8 years to service the water purifier, including the ro water purifier it was under warranty. The purifier happily churned out 'purified water', I do not know how effective it was in purifying water, since none of the internal components had ever been serviced or changed in the last 8 years. However, the lights on the Water Purifier have always turned from red to yellow to green when switched on, which according to Eureka Forbes, indicates everything is good to go and purified water flowing from the UV water purifier was safe to drink. The only thing that did stop working was the music, the device decided to stop playing music when the water flowed after a few year