National Water purifiers are good in delivering fast filtered water fro dinking or for cooking. The design is nice too so it fits well into the kitchen as a decor piece. It is easy to install depending on the water tap head that you are installing to. Generally shorter tap heads are easier to install than the longer tap heads
Pros: It has a Cartridge Life checker that can tell us when to replace the cartridge . It removes minute foreign particles, red rust in water pipes, offensive taste and also excessive chlorine, Refill cartridges are easily available and easy to change.
Cons: It cannot remove compounds in hard water. it also cannot remove salt that dissolved in sea water.
Overall it is a good filter considering the price and the functions