The glass on your house is one of the first things anyone sees, and a film of grime quietly dims every room behind it. When it comes off, the change is not subtle. Rooms feel brighter, the view comes back, and the whole place reads as cared for.
There is a practical side too. What settles on your windows is not just dust. It is sprinkler spray, tree sap, pollen and the fine grit the Santa Anas drive into everything, and left on the glass it slowly wears the surface down. Cleaning it off on a regular schedule protects windows you already paid a lot of money for, and it costs a tiny fraction of replacing them.
Most homes here do best on twice a year. That keeps the glass genuinely clear and stops the buildup before it ever gets a foothold. If you are near open land, a construction site, or a row of sprinklers, you will notice it wants doing a little more often than that.