Contractor of Choice for large-scale HVAC construction: Atlas Mechanical provides mechanical construction services for large- ... scale projects across the United States. We offer a level of engineering design, design-assist, and project management expertise that make us the contractor of choice for many world-class general contractors and developers. Headquartered in southern California, we have the depth of experience, personnel, financial strength, and bonding capacity needed to handle the most significant mechanical projects. read more