You should start by looking at the capacity. You should know that most of the purifiers always come with tanks to store the purified water. It will therefore depend with the number of people that are likely to drink that purified water. 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. In addition, we also have automated water purifiers which can sense when the volume of water goes down in the storage tank and refill it. With this you will be free from purchasing the wrong purifier.
Apart from that, 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. Such places can be well served with gravity based water purifiers since they don’t need electrify to operate. Apart from that, maintenance cost of non-electric water purifiers is not that high. The difference will be efficiency as electric water purifies tend to do it faster and more perfect than non-electric water purifiers.
Maintenance cost and after sales services is another thing that should guide you in choosing water purifier. Maintenance is very essential in all the equipment not only water purifiers. Without maintenance the water purifier will not work 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.
In addition, you should also consider installation and a warrant. 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.
Apart from that, you should also check warranty and the ratings. One thing that you should know is that when you want the best water purifier you should choose the one that is highly rated. In addition, you should also consider online reviews as they will give you chance to go through some of the customers comments about different types of water 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.