American Association for Respiratory CareSince 1947, the American Association for Respiratory Care (AARC) has been committed to enhancing your professionalism as a respiratory care practitioner, improving your performance on the job, and helping you broaden the scope of knowledge essential to your success. With more than 49,000 members nationwide, the AARC is the only professional society for respiratory therapists in hospitals and with home care companies, managers of respiratory and cardiopulmonary services, and educators who provide respiratory care training.