We'll do most of the prep to triage your appointment and stock the appropriate parts on our truck. As long as you’ve provided the details we asked for, including the model and serial number of the appliance, you’ve done your job. If you really want to ensure the appliance is repaired on the first visit, we encourage you to schedule one of our virtual visits. They’re only $49, they could save you the appointment altogether if we fix it over the phone, and if not, the $49 is applied to the $149 service call fee for us to come out.