Cooler Depot will re-send you a brand new unit again. When you open and plug in unit and it does not work please contact Cooler Depot and we will give the customer an option of fixing or exchanging for same unit. We will request pictures of the damage. If listing states product has NSF, the product is NSF Certified. If you do not see NSF in the product listing, the product is not NSF Certified.Thank you for visiting Cooler Depot USA. We hope to earn your business. We provide great customer service all the way around. The item "NEW 71 Commercial Dry Heat Food Warmer Open Well Buffet 5 Compartment Table NSF" is in sale since Monday, September 17, 2018. This item is in the category "Business & Industrial\Restaurant & Food Service\Commercial Kitchen Equipment\Storage & Handling Equipment\Heating & Holding Cabinets". The seller is "liany-us2014" and is located in Covina, California. This item can be shipped to United States.