Just installed purity yesterday. After the installation,Technician was patiently explained how to use the dispenser. Including Do and Don’ts. Quite straight forward though and filters are less costlier than other brands. Truly, cold and hot water dispensed quite quickly despite of being tankless and no water wastage or discharge. Importantly, water taste clean and sweet** It deserved a 5* if the taste continues to be good for next few months.