"Uncompromising Quality & Service" This basic business philosophy has been the foundation of success for W.D. Manor Mechanical Contractors, Inc. since the early 1940’s. W.D. Manor is a full-service Mechanical Contractor serving Arizona since 1945. Specializing in HVAC, Plumbing, Medical Gas and Process Piping systems, Manor’s expertise extends to those tasks requiring the most advanced technical skills in specialized industries. Our commitment to uncompromised quality and service, as well as industry leadership and community involvement, creates a team of professionals recognized for excellence. Our dedication, professionalism, team work, and customer service makes us a top mechanical contractor in the Southwest.