[header] How to buy a portable dishwasher [title] Determine if portable is better than permanent. [step] You are a good candidate for a portable dishwasher if you are renting and unable to renovate the kitchen, or if you lack the space to fit a built-in dishwasher. [substeps] Be sure you are willing to put effort into using your portable dishwasher. 
You will need to physically move it (unless you keep it in one place) and hook it up every time you use it. [title] Decide on how large of a dishwasher you can accommodate.