Some homes must weather tough environmental conditions by virtue of their locations -- such as areas of heavy industry, or along the coast. Airborne particles abound in these environments, and they stick to windows. That means frequent washing. Thankfully, some window products are available to help ease the chore. Many double-hung windows now feature tilt-in sash designs. This means the exterior glass can be cleaned from the inside -- just tilt the sash inward. If grilles cause cleaning headaches for you, consider ordering windows with grilles built-in between the glass. It’ll be easier to wipe the windows clean.  If replacement is an option for you, Andersen 400 series windows and patio doors come standard with glass that stays cleaner with less water-spotting.  When activated by the sun, this High-Perfomance® Low-E4® glass helps make cleaning easier --while mainting all the benefits of High-Performance Low-E glass such as energy efficiency and sound reduction.