Many wash sites have designed huge glass windows into the buildings of their washes to allow the consumer to view their vehicle going through the wash process; some of the newer carwashes are housed in attractive “glass buildings” to provide additional exposure and further promote the wash site. The addition of the optional PurClean Spot-Free Glass Rinse feature provides the Operator with an efficient, cost-effective system that is programmed to spray spot-free water through a uniquely designed manifold onto the glass to eliminate chemical residual, hard water and dirt build-up.