Mason & Hanger

Mason & Hanger operates from Glen Allen, Virginia, serving as a specialized architectural and engineering consultancy rather than a traditional residential HVAC contractor. This firm focuses on designing secure, mission-driven facilities for federal government agencies including the Department of Defense, Department of Energy, and NASA. The business maintains standard weekday hours from 7:30 AM to 5:00 PM, Monday through Thursday, with Friday operations closed. As a Day & Zimmermann company, Mason & Hanger brings nearly two centuries of industry experience to complex engineering projects rather than individual homeowner service calls.

What distinguishes this firm from typical contractors is its concentrated expertise in government facility design and specialized engineering disciplines. Their portfolio spans structural engineering, mechanical and electrical systems, life safety and fire protection, building information modeling, and commissioning services for high-security environments. The company holds ISO 9001:2015 certification and has maintained continuous operations supporting national security missions for over 200 years, positioning them uniquely among engineering consultancies serving institutional clients.

Due to the specialized federal focus of Mason & Hanger, residential customer stories typical of homeowner reviews are not applicable to this business model. Their project scope involves secure facilities design, munitions modernization, and energy sustainability services for government installations rather than individual home heating and cooling systems.