To remove hard water stains from windows, start by creating a solution of equal parts white vinegar and water. Spray the solution onto the stained areas and let it sit for 10 minutes to dissolve the mineral deposits. Gently scrub the area with a non-abrasive sponge or cloth, then rinse with clean water. For tougher stains, a paste made of baking soda and water or a commercial hard water stain remover can be used. Dry the window thoroughly to prevent streaks and future buildup.

Hard water stains can be effectively removed using a mixture of vinegar and water. Let the solution sit on the stains, scrub gently, and rinse well. For stubborn stains, use baking soda paste or a commercial cleaner. Drying the window afterward helps prevent streaks. Regular cleaning can help manage hard water buildup.