1, As usual you have to decide how much you want to spend on a steam cleaner. As there are wide varieties it is important to decide budget before choosing a steam cleaner.
2, You must understand your cleaning requirements, if you want to clean your entire house or just your garage and kitchen, make a choice.
3, There are two types of floor steamers cleaners -one which has very specific application and another which can be used for wide range of uses given the attachments, the best is to buy the second one. It is great idea to buy one with wide range of application
4, Check the warranty time so you can have peace of mind and can use it for quite long period.
5, Make sure it has enough water capacity so you can fill to the brim and clean most of the floor or carpet in your house.
6, Read reviews of steam cleaners before buying one. One of the best site I have found is Steamers Cleaners Reviews.
Your steam cleaner can really improve the cleanliness of your house and sanitize your house with ease.