I love The Sofia Nebulizer so much that I purchased one and then about a year later when a different brand just stopped working I purchased another. Now, I have one in my bedroom and one in my guest room. I love the soft light and the scent that it puts out and so some wear and tear are expected. Every year or so I buy another glass reservoir for them because they do burn. It is a delicate mechanism. In the meantime I keep them clean and very active. Thank you for a beautiful and wonderful product.