@blm1007blm1007 I only used the Respironics nebulizers once - then switched to generic reusable ones. Then I always had 2 in rotation (when I nebbed 3 times a day, I had 3 in use.) Whether generic or "name brand" I replaced them after about 3 months.

With the eFlow Rapid, you have a different setup - the entire head is the nebulizer unit, and according to Pari, it is to be replaced after 6 months. Since I only neb every 3-4 days now, I plan to use it for a year. You no longer use the separate cups.

The hospitals generally only have disposable nebulizers, packaged with tubing and a mask. These cannot be sterilized. Most of us order replacement parts on-line. I have used Nebology, Just Nebulizers, and Direct Home Medical in the past, where I could often get a better price by ordering 5-10 at a time. Now I use Nebology for my Pari.