I have been using Dingman Pools for the past three seasons for my pool openings, weekly maintenance, and closing. They are fantastic. William and Michael are approachable, honest, helpful, do great work, and really care about the quality of their business. They are easy to get in touch with, and always call back. In addition I have used them to do an entire pool renovation (new pavers, new heater, new Aqualink system, new plumbing, new filter, etc.). They work well together with their electrician [Woodhollow Designs] and plaster guys. Overall I have been very happy with them.