Just as important as finding the right CPAP mask, replacing it on a regular basis is critical for receiving the optimum benefits of sleep therapy. Sleep experts recommend changing it once every three months or 4 times a year. The reason is because the plastics in your mask can deteriorate over time, creating cracks and crevices which can cause leaks and harbor dangerous bacteria, not to mention interrupt your sleep. Routine replacement can help prevent infections and help keep your mask in good working order. If you don’t see what you need, email us, we are happy to help.