Before investing in an ice and water vending machine, it is important to investigate and understand what certifications, if any, the product you are buying has gone through. All manufacturers DO NOT get their machines certified by the agencies that were set up to protect the consumer, so you will need to investigate. In many states, ice and water vending machines must be NAMA certified to be approved to sell ice and/or water. In addition, many zoning departments require that the machine be ETL listed.