Knock on wood I've had few issues with mine, which I use as a backup for travel. I do not reply on it for day to day and when I use it I baby it! It's important to clean the gold contacts with an alcohol pad from time to time and not let it sit "attached". I'll need to read its enclosed literature again but I don't recall a no saline precaution. It seems to me Philips could never get its story straight with its discontinuation of its nebulizers. Too bad, they were good machines.