The importance of windscreen wipers is often under estimated. Your safety depends on clear vision. In Ireland with heavy precipitation it is recommended to change your wiper blades at least once if not twice per year. It is also important to check your windscreen washer reservoir to ensure there is sufficient winter additive to prevent it from freezing.
TIP for Frosty Nights: For regular windscreen wipers you place cardboard along the length of the blades to prevent them from freezing to the glass. For aero wipers, lift the wipers off the windscreen before the frost sets in. If the wiper blades do end up freezing to the glass NEVER turn them on as this could damage the wipers and the wiper motor itself.