Capacity is one of the factors that will guide you in choosing the best purifier. You find that most of the purifiers come with storage tanks to store purified water. The number of people that will be willing to use the purified water for drinking will greatly determine the capacity of the storage tank you go for. For example, if you have a small family you can choose a tank of 4-7 litres in capacity and 10 litres for big families. Another thing is that we have some automated water purifiers which can detect when the volume of water goes down and refill it. With this you will be free from purchasing the wrong purifier.
Not only that but you should also check if it is electric or non-electric. This is important as those people who live in places with constant power interruption should purchase water purifiers that can operate without electricity. To be on the safe side in such places you should go for gravity based water purifies. Apart from that, maintenance cost of non-electric water purifiers is not that high. On the other hand, electric purifiers are more efficient in purifying water than the non-electric purifiers.
Apart from that, you should also consider maintenance and after sales service. You should know that maintenance is something necessary for all the equipment. This is important as it will ensure that the water purifier serves you well as required. It is the duty of the producers to provide you with free or affordable maintenance services for a given period of time. In real sense you will spend less money maintaining non-electric purifier than electric purifier.
Apart from that, you should also check installation and a warranty. You find that there are some companies that will provide you with free installation services. This is because there are other companies that will bill you a lot of money on the installation. It is better to buy water purifier with a warranty as you will be able to return it when it is not working properly.
Another thing that you should consider is warranty and ratings. For high quality water it is important that you select the water purifier that is highly rated amongst others. Another thing that you should check is reviews which will allow you to know what the clients are saying about different types of purifiers. The best water purifier should be the one with many positive comments as this shows that the people are satisfied with that particular product.