Regularly clean kettles to prevent bacterial growth, limescale, and improve energy efficiency.

The article emphasizes the necessity of regularly cleaning kettles to prevent bacterial growth and limescale buildup, which can affect water taste and harbor heat-resistant germs. Experts recommend washing the kettle's exterior weekly and using a vinegar solution or citric acid for interior cleaning. This process not only maintains hygiene but also enhances energy efficiency, as scaled kettles take longer to boil, increasing energy costs.