Firstly, increased energy bills – As your heating system becomes clogged with limescale, it has to work harder in order to bring your home up to the right temperature. Limescale also leaves a grimy look in your bathroom and on shower doors and can be very difficult to get off, something very annoying for those trying to keep their restrooms clean. Although New Zealand's water is considered relatively 'soft water' and doesn't contain minerals such as calcium and magnesium like 'hard water', it's still an issue in some parts of the country. With hard water it's difficult to lather with soap or shampoo and it builds up scale deposits on water-using appliances. This leaves residue such as limescale on bathtubs and shower glass which can be very difficult to get rid of when not treated with the correct product.