Shapiro and Duncan is a full service Plumbing and HVAC construction company based in Rockville, Maryland since 1976. We are a cradle to cradle provider of mechanical services from concept through design and construction, warranty, preventive maintenance and service, completing the cycle of rebirth as we replace the equipment at the end of its useful life.Shapiro & Duncan has attained an unrivaled reputation for superior performance on all types of commercial mechanical projects and HVAC Service. We continue to be the "Mechanical Contractor of Choice"​ for educational institutions, commercial and government buildings, and the preferred contractor for complex projects that require demanding performance or unusual time constraints. We are an industry leader in design-build project delivery, sustainable design, Building Information Modeling (BIM) and Integrated Project Delivery (IPD). Our reputation is built from our people and their performance. Our corporate culture is driven by our key commitments: Quality, Performance, People, Safety, Innovation, and Outreach.Industry Leaders in construction, renovation and maintenance for:Hospitals, Schools, Universities, Office Buildings, High Rise Residential, Government Buildings, Museums, and Historical Restorations.