Really? A six month old $750 item and they want me to pay $100 just to have someone come out and look at it? So much for that warranty.
You seem to be missing the concept of what a warranty is. If you have an HVAC guy come to your house to check out something wrong with your furnace, and they fix something on it that is covered by warranty, the repair work does not cost, but you still have to pay the $75 service call fee for them to drive one of their trucks to your house to check it out.