A:Answer This diswasher is an easy install and doesn't require an air gap, unless your local ordinance requires an air gap. I live in The Woodlands Texas, and my dishwasher drain hose is just connected to the drain plumbing using a high loop, no air gap.
https://www.bosch-home.com/us/productslist/dishwashers/front-controls/SHEM3AY52N?breadcrumb=frontcontrols_us
Highlight the above line and right click to go to and click on manuals. The installation manual is very easy to follow and shows how to install with an air gap or without.