Extensive guide and resource on setting up your own soda fountain. I’d really like to make one of these one day, looks like post-mix is the way to go “For the vast majority of home users, the Post-mix system with ice bin will be the preferred method. The bin should be insulated, so you can get away with adding ice only every few days, or possibly even every week if the insulation is really good and you load the bin down with lots of ice”. Link.
Setting up a Home Soda Fountain