Dormatech Mechanical Systems, Inc. are members of the Local UA 342, UA 343, UA 393, UA 467, UA 38. Located 30 minutes North of San Francisco, we are please to service all of Northern California. We offer full Service, Repair, Preventative and Corrective Maintenance on all major brands of Commercial and Industrial HVAC. In addition, we offer New Commercial Construction Installations including Duct Work. Our Team consist of High-Quality Certified Technicians and Professional Office Staff who are ready to assist you with your HVAC needs.