24 Months warranty starting on the day of purchase. Only nebulizer manufacturing flaws are covered by the warranty. Nebulizer breakage, normal wear and tear, and nebulizer kits are not covered under warranty. The manufacturer's terms and conditions apply to the warranty program. For repairs or servicing, the customer must send their piston nebulizer machine to the service facility. Please refrain from doing any illegal repairs on piston compressor nebulizers as this could result in electric shock and void the warranty.