United Illuminating Co. is a business that is highly praised for its excellent customer service and willingness to help customers in crisis situations. Customers describe the representatives as very professional, helpful, and knowledgeable, with one representative in particular being highlighted as "fantastic" and an "asset to United Illuminating." The company is said to be always there for its customers, offering convenient payment plans to suit their needs. The online platform is also commended for being user-friendly and informative. While some customers express concerns about increased charges, the overall sentiment towards United Illuminating Co. is very positive, with many customers recommending the company to their friends and family.