In fact, a clothing steamer is so much easier to use than an iron that we wouldn't blame you for pulling it out every day. Fortunately, it's not difficult to get your clothing steamer back in working order again. We have all the details on how to clean a clothing steamer and remove hard-water deposits. Step 5: Run The Steamer With WaterFill the steamer with clean water and run the steamer until all water has evaporated. Tips To Keep Your Clothes Steamer Clean LongerIf you have hard water at home, filling your steamer with distilled water only will allow you to go longer between cleanings.