It's so discouraging, especially when you're running late, to be ironing your clothes and have a big, white, crusty chunk of hard water or mineral buildup fall off the iron and rub onto your garment. It comes right off, but more than anything, it's annoying to have to brush it off and make sure that all of the white spots are gone, especially on a black garment. Whenever possible, use distilled water in your iron.
Dump out all of the water that is in your iron, if any. Fill up your iron with white vinegar and set the control dial on "steam," and let the iron heat for five minutes.
2
Turn off your iron, unplug it and let it completely cool down. Empty the remaining vinegar out of the iron and refill it with water.
3
Plug your iron back in and set the control dial back to "steam." Find an old rag or T-shirt and iron it on the ironing board until all of the white residue falls off. You should still be able to scrape off the residue from the old fabric, but plan to throw it away just in case.
4
Empty all of the water out of the iron. This time when you refill it you can start ironing your garments again.
Tips & Warnings
If you have a very old freezer that frosts up inside you can chip off that frost, melt it and use it in place of distilled water.