New dishwasher installed last year without airgap. Think/hope contractor used the "loop" system discussed elsewhere on this forum.
Suddenly, WITHOUT dishwasher running, water from sink went to bottom of dishwasher, did not drain, but ran out bottom of dishwasher onto floor. Sears came out (does anyone else now believe that Sears is beyond terrible?) Technician said nothing wrong, guaranteed that an undercounter airgap will resolve issue. I read here never to do that. So.... Any ideas appreciated. Thank you.