Yes, Energy Tubs is one of the few walk-in tub manufacturers with a UL certification. The UL listing provides you and your customers with a very strong indication of the safety of an Energy Tubs walk-in bath. UL is an independent product safety certification organization who has been testing and evaluating products for over 116 years. They are world-regarded as the best in the business. More specifically, UL does extensive testing of a product against UL safety standards. If the product is approved, the product is labeled with a UL Listing Mark. Look for this UL Listing Mark…don’t buy a walk-in tub that doesn’t have this mark prominently displayed in their website, literature and on the tub.