I HAD BROUGHT WHIRLPOOL PURA FRESH 6L RO 2 YRS BEFORE .IT WAS SUPER, AMAZING BECAUSE BETWEEN THE 2 YRS THERE IS NO PROBLEM AT ALL .IF I NEED GENERAL SERVICE I MAKE A CALL TO CALL CENTER.THEY SUPPORT US IMMEDIATLY WITH IN 2 HOURS . TO ALL THE CUS IN CHENNAI IN MY EXPEREANCE WHIRLPOOL RO IS A BEST RO TO USE IN OUR HOME .AND ALSO A KIND AND IMPORTANT INFORMATION I AM IN PERAMBUR AREA IN MY AREA WATER SALT LEVEL IS SO MUCH HIGH .OTHER WATER PURIFIER COMPANEES ARE NOT SUPPORTED TO MY WATER.BUT THIS ONLY WHIRLPOOL RO IS SUPPORTING ME LAST 2 YRS. KEEP IT UP WHIRLPOOL RO GERAT GOING .THANKS TOO.