I believe it is UnAmerican to do business with Lincare. This is a wholly owned indirect subsidiary of Linde, a gases and engineering company headquartered in Germany. RUN, RUN, RUN. They really do not care if Americans receive bad service. You will get a much better overview of use and care for a CPAP machine from YouTube than from the rude and sullen therapist I experienced with Lincare. They are charging U.S. companies $1800 for a machine they purchase for from $400 to $600. They are charging U.S. companies $200 for worthless training by an incompetent staff. They are tolerating incredibly rude associate staffing. They do not care. WHY DO THEY NOT PROVIDE ONLINE TRAINING WITH SUPPORT FROM STAFF IF REQUIRED. They would at least know the training provided was adequate. This sullen person, RT I encountered provided at a minimum half of what I learned online. She is worse than online training. Like most rude people she is also incompetent.