More than 1.5 million adults in the United States use supplemental oxygen to treat a variety of respective respiratory diseases. Oxygen therapy is used to improve the quality of life and prolong survival for patients with low oxygen levels. If you are a long time oxygen patient, or if you are someone who has recently been prescribed oxygen therapy, you might be curious what the transition from an oxygen tank to a portable oxygen concentrator would look like, and if the benefits of a POC would outweigh the costs associated with switching methods.