D & W Heating & Air Conditioning offers over 20 years of experience in providing reliable heating and cooling services. Their certified technicians undergo continual training to stay up-to-date with the latest techniques and use state-of-the-art equipment while following safety standards. Customers praise the technicians for being knowledgeable, friendly, and prompt. They are described as polite, professional, and helpful in answering questions and concerns. The company handles issues of any complexity and offers installation, repair, and maintenance options. Customers have reported positive experiences with both routine maintenance and occasional repairs, highlighting the company's reliability and expertise. Technicians like Keith, Garth, and Randy have been praised for their thorough, professional, and efficient service, as well as their ability to provide helpful instructions to customers. The company's staff, including Theresa, are described as friendly and knowledgeable, providing an overall excellent customer experience.