D.H. Services Group is the best contractor team we have ever worked with. They are totally customer-focused, knowledgeable, reliable, and meticulous in their work, with careful attention to detail. They did a thorough home energy audit, gave us a clear set of recommendations, and did the work to make our home more energy efficient. We are saving 30% on our heating bill, just as predicted! Thank you, D.H. Services Group, for doing such a great job on our home improvement project.