Selecting D & W Heating and Air Conditioning as our service provider has proven to be a great choice. When they installed my new Trane HVAC system, two years ago, they left no evidence that they were even in my home other than a perfectly installed system. Since the initial install we’ve had two yearly check-ups. The technicians that performed the check-ups were professional in appearance, and demeanor. They checked everything that needed to be checked, and ensured our questions or concerns were addressed to my satisfaction.