Hello friends this product is much better than other. why? - most important thing is safety and electricity efficiency there is both. This is useful for normal use and heavy use for home or office. I am also using this product and I have no any trouble with this. like(electric shock, fire, and over water heating) its has 15 liter water tank for long use and 2000 watt for quick heating system. Special protection device attract harmful salts and keep the element and tank healthy and safe from corrosion. if any problem with this product you can go for service. service and support system is very good. you get one day service. I very satisfied for this product so I recommend for this.