There are numerous reasons why you might want to buy a tankless water heater for your home. Tankless water heaters require less space than traditional water heaters, and they can provide you with hot water on demand. As this video explains, there are some things you should know before you make the decision to switch to a tankless water heater for your home. If you live in an area with hard water, your tankless water heater will probably require more maintenance in order to prevent mineral buildup. Tankless water heaters also run on electricity, so a power outage will deprive you of hot water. To learn more about tankless water heaters, watch the full clip.